Pasar Pneumatic Hydraulic · A A-2 Hydraulic Pumps Hydraulic Pump Selection Table Pump Type Name Type Classifi-cation Rated Pressure MPa {kgf/cm2} Displacement cm3/rev Page Variable

qNachi Fujikoshi hydraulic pumps arefinished by high-grade, precisionmachining technology unique to thecomprehensive manufacturer NachiFujikoshi using carefully selectedmaterials and traditional heat treat-ment technology. High performanceand quality are assured with all mod-els of Nachi Fujikoshi hydraulicpumps.

wNoise has been thoroughly reducedon hydraulic pumps, a general sourceof noise on machinery and equip-ment. All models such as the low-noise type IP series can be operatedquietly with little noise.

eAttention has been paid to surfacetreatment and selection of materialsin NACHI hydraulic pumps so thatthey can be applied extensively withfire-resistant hydraulic operating fluid.

qLimit the eccentricity between thedrive shaft and hydraulic pump shaftto 0.05 mm, keep the angle errorwithin 1° and use flexible couplingsfor connections.

wWhen operating hydraulic pumps withbelts, gears and chains, prevent aradial or thrust load exceeding theallowable value from being applied onthe pump shaft. Also, if necessary,install a device that prevents a load(bending force) from being applied atright angles on the shaft. Mounthydraulic pumps so that the pumpshaft is horizontal.

eUse a rigid pump mounting base.rThe direction of rotation is determined

on each hydraulic pump. Operate the hydraulic pump in thecorrect direction of rotation afterchecking the indicated model No. onthe nameplate or the arrow indicatingthe direction of rotation on the body.The direction of rotation is clockwisewhen viewed from the shaft end.

tLimit the suction pressure to withinthe range -0.03 to +0.03 MPa -0.3 to+0.3 kgf/cm2.

yWith external drain type hydraulicpumps, directly connect the drain tothe tank, insert the drain pipe underthe oil level, and limit the drain backpressure to 0.03 MPa 0.3 kgf/cm2.

uWhen connecting steel pipes to thesuction and discharge sides, preventforce pressure from being applied onthe hydraulic pump by the piping.

iSet the clamping length of couplingsand hydraulic pump shafts so that it iswithin at least 2/3 or more of the cou-pling width. Also, use a size of cou-pling that matches the shaft diameter.

oWhen inserting couplings into shafts,insert them gently. When removingcouplings from shafts, be sure to usea pulley extractor. Avoid hitting theshaft when attaching or removingcouplings.

!0Connect to the suction port above thehorizontal to keep oil inside hydraulicpumps.

!1Provide an air bleed valve in circuitswhere it is difficult to release air atstartup.

!2Be sure to use only specified bolts onhydraulic pumps. Use 12T or equiva-lent.

Uni-pumps are compact pump/motorunits which have a motor directly cou-pled to the hydraulic pump. Variable dis-charge volume type vane pumps andpiston pumps are available. As each ofthese pumps are ideally integrated withthe motor, they can be easily installed,and more compact equipment configu-rations can be achieved economically. ¡Standard motor:

totally-enclosed splashproofhousing surface flange cooledself-actuating type (totallyenclosed fan-cooled type)3.7 kW to 4P or less: Class Einsulation5.5 kW to 4P or more: Class BinsulationVoltage 200V…50/60 Hz

220V…60 Hz

qUse mineral oil-based hydraulic oper-ating fluid.

wProvide a suction filter of about 100 to150 mesh on the suction port.

eWhen operating hydraulic pumps at ahigh pressure or when using fire-resistant hydraulic operating fluid, oilcontamination greatly affect pumpservice life. So, use a filter of 25µm orless.

rConsult your agent when using fire-resistant hydraulic operating fluid. When using water- or glycol-basedhydraulic operating fluid, refer to pageN-3 for details on applicable models ofhydraulic pumps.

tFor details on the viscosity ofhydraulic operating fluid, refer to theseparate item "Hydraulic OperatingFluid."

The following describes the meanings ofthe following terms used in this catalog:¡Rated pressure:

The maximum pressure atwhich a hydraulic pump can beused continuously.

¡Maximum operating pressure:The maximum pressure (includ-ing surge pressure) at which ahydraulic pump can be usedwithin six seconds at most with-in 1/10 of the cycle time.

¡Allowable peak pressure:The maximum pressure (setpressure + surge pressure) thatcan be momentarily allowed

¡The following shows the standards inLists of Sealing Parts:JIS standard B2401 (O-ring)JIS standard B2407 (backup ring)SAE standard AS568 (O-ring)

¡Pipe apertures mentioned in this cata-log that are indicated as "G*/*" com-ply with JIS B2351 O-ring seal sys-tems. Note, however, that G3/4adopts dimensions before JIS revi-sions were made in 1990. NachiFujikoshi adopts P24 as the O-ringsize whereas P22.4 is stated in cur-rent JIS standards.

1.Pump discharge flow rate

Qp= (r/min)

q=discharge volume per rotation(cm3/rev)

N=revolution speed(min-1)ηv=volume efficiency

2.Power required for pump drive

WP1= (kW)

= (PS)

P=discharge pressure(MPa)η=overall efficiency

3.Motor revolution spee

N= ·(1–S)(min-1)

f=frequency(50Hz, 60Hz)P=number of motor polesS=slip rate

120·fP

P·Qp44η

P·Qp60η

q·N·ηv1000

Features

Uni-pumps

Management of HydraulicOperating Fluid

Calculation FormulaRequired when Selecting

Hydraulic Pumps andMotor

Installation andMaintenance

A

A-1

Terms Used in This Catalog

NA

CH

I Hyd

raulic P

um

ps

A_Piston(P01-15)_E.q 03.11.20 0:45 PM Page 1

A

A-2

Hyd

raulic P

um

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Hydraulic Pump Selection Table

Pump Type Name

Type Classifi-cation

RatedPressure

MPakgf/cm2

Displacement cm3/rev

Page

Var

iabl

e pi

ston

pum

psV

aria

ble

disc

harg

e vo

lum

e va

ne p

umps

Inte

rnal

gea

r pu

mp

PVS series variable piston pump PVS

21214

Uni-pump UPV21

214

PZS series variable piston pump

PZS21

214

PZ load-sensitive variable piston pump PZ

21214

PZH series high-pressure variable piston pump

PZH35

357

VDS series compact variable vane pump VDS

771.4

Uni-pump USV7

71.4

VDR13 design series variable vane pump VDR

661.2

Uni-pump UVD6

61.2

VDR22 design series variable vane pump VDR

14143

Uni-pump UVD7

71.4

VDC series high-pressure variable vane pump VDC

14143

Uni-pump

UVN series variable vane uni-pump UVN

881.6

UVC7

71.4

A-3

A-19

A-22

A-35

A-42

B-1

B-4

B-6

B-12

B-15

B-22

B-25

B-37

B-39

C-1

C-14

IPH series IP pump IPH25

255

IPH series double IP pump IPH21

214

1 2 5 10 20 50 100 200 500 1000 2000 5000

3

3

45

45

42 220

2208

28 40

3 8.3

3 8.3

4

4

27.8

27.8

5 44.4

33.35

5

5

88.9

16.1

33.3

3.6 125.9

7.2 251.8

8.1


Pisto

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A

A-3

PVS SERIESVARIABLE VOLUME PISTON PUMP

0

M

*

*

Dischargeport

Suctionport

Drainport

PVS Series VariableVolume Piston Pumps

8.0 to 45.0cm3/rev21MPa

Features

Design No. 30 is applied on PVS-0B to make the pump more compact and lighter, and reduce noise.Production of PVS-3B has been discontinued. Use PZS-3B.Pressure adjustment 3 type has been added to PVS-1B-22 and PVS-2B-45. (Design No. 20 is applied onlyon PVS-2B-45*3.)

Specifications

Energy-saving Type withDrastically Reduced Loss

A NACHI-proprietary semi-circular bar-rel swash plate that receives pressureon its surface ensures a stable dis-charge volume at all times. This elimi-nates excess

discharge volume, and enables theeffective use of power corresponding tothe load cycle.

This "energy-saving type" conservesenergy, reduces power loss, and helpsto reduce hydraulic costs.

Silent Type That DemonstratesIts Power Quietly

Proprietary low-noise mechanisms areincorporated on the shoe, swash plate,valve plate, and other locations toensure silent operation. In particular, asemi-circular barrel swash plate stabi-lizes operation characteristics to ensuresilent operation.

¡Handling¡Cautions during Pump Installation

and PipingzUse flexible couplings for connecting the

pump shaft to the drive shaft, and pre-vent a radial or thrust load from beingapplied on the pump shaft.

xFor centering of the pump shaft, limit theeccentricity between the drive shaft andhydraulic pump shaft to 0.05 mm, andkeep the angle error within 1°.

cSet the clamping length of couplings andhydraulic pump shafts so that it is withinat least 2/3 or more of the couplingwidth.

vUse a sufficiently rigid pump mountingbase.

bSet the pressure on the pump suctionside to -0.03 MPa or more (suction portflow velocity within 2 m/sec).

nRaise part of the drain piping to abovethe topmost part of the pump body, and

insert the return section of the drain pip-ing into the hydraulic operating fluid.Also, observe the values in the followingtable to limit the drain back pressure to0.1 MPa.

¡Management of Hydraulic OperatingFluid

zUse good-quality hydraulic operatingfluid, and use within a kinematic viscosi-ty range of 20 to 200 mm2/sec duringoperation. Use an R&O type and anti-wear hydraulic fluid of ISO-VG32 to 68.The optimum kinematic viscosity duringoperation is 20 to 50 mm2/sec.

xThe operating temperature range is 5 to60°C. When the oil temperature at start-up is 5°C or less, warm up the hydraulicpump by low-pressure, low-operationspeed operation until the oil temperaturereaches 5°C.

cProvide a suction strainer with a filteringgrade of about 100µm (150 mesh). Besure to provide a return line filter of grade20µm or less on the return line to the tank.(When the hydraulic pump is used at ahigh pressure of 14 MPa or more, we rec-ommend providing a filter of 10µm or less.

vManage the hydraulic operating fluid sothat contamination is maintained at classNAS10 or lower.

bUse hydraulic operating fluid within anoperating ambient temperature of 0 to60°C.

(continued on following page)

Model No.

ItemPVS-0BPVS-1B PVS-2B

Pipe joint size 3/8"or more

1/2"or more

Pipe I.D φ7.6 mm dia ormore

φ12 mmdia or more

Pipe length 1m or less 1m or less

Model No.Volume

cm3/rev

Discharge volume at no-load r/minPressure

adjustment range

MPa

kgf/cm2

Permittedpeak

pressureMPa

kgf/cm2

Rotating speed min-1 Mass

kg

1000min-1 1200min-1 1500min-1 1800min-1 Min. Max.

PVS-0B-8*0-30

1

2

3

8.0 8.0 9.6 12.0 14.4

2 to 13.5 20.4 to 35.7

2 to 17.5 20.4 to 71.4

3 to 14. 530.6 to 143

3 to 21. 530.6 to 214

25

255500 2000 7.7

PVS-1B-16*0-(*)-12

1

2

3

16.5 16.5 19.8 24.7 29.7

2 to 13.5 20.4 to 35.7

2 to 17. 520.4 to 71.4

3 to 14 .530.6 to 143

3 to 21. 530.6 to 214

25

255500 2000 10.5

PVS-1B-22*0--(*)-12

1

2

3

22.0 22.0 26.4 33.0 39.6

2 to 13.5 20.4 to 35.7

2 to 17. 520.4 to 71.4

3 to 14. 530.6 to 143

3 to 21. 530.6 to 214

25

255500 2000 10.5

PVS-2B-35*0--(*)-12

1

2

3

35.0 35.0 42.0 52.5 63.0

2 to 13.5 20.4 to 35.7

2 to 17. 520.4 to 71.4

3 to 14 .530.6 to 143

3 to 21. 30.6 to 214

25

255500 2000 21

PVS-2B-45*0--(*)-12

1

2

3--(*)-20

45.0 45.0 54.0 67.5 81.0

2 to 13.5 20.4 to 35.7

2 to 17. 520.4 to 71.4

3 to 14. 530.6 to 143

3 to 21 .530.6 to 214

25

255500 2000 21

Note) 1. The standard direction of rotation is clockwise when viewed from the shaft end. Consult your agent separately for a counterclockwise direction of rotation.2. A keyed straight shaft is standard. For details on spline shafts, consult your agent separately.


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¡Cautions at StartupzBefore you start pump operation, fill the

pump body with clean hydraulic operatingfluid via the lubrication port.

xAn unload is required when the motor isstarted under condition λ_3. Consultyour agent regarding the circuit.

cMake sure that the pump operates in thedirection of rotation the same as thatindicated by the arrow on the pumpbody.

vAir entering the pump or pipes maycause noise or vibration. At startup, setthe pump discharge side to a no-loadstate, and operate the pump in the inch-ing mode to release any air in the pumpor pipes.

bProvide an air bleed valve in circuitswhere it is difficult to release air at start-up. (See "IP Pumps" on page C-13.)

¡How to Set Pressure and DischargeVolumeThe default pump discharge volume isset to "maximum" and default dischargepressure is set to "minimum". Changethe discharge volume and dischargepressure settings according to your par-ticular operating conditions.

[Pressureadjustment]Turning the pres-sure adjustingscrew CW increas-es the pressure.

[Discharge volumeadjustment]Turning the flowrate adjusting screw CWdecreases thedischarge volume.

Note)· For details regarding the relationship betweenflow rate adjustment length rand pump capacityq, see the tables provided in the installationdimension drawings for each of the pumps.

· Firmly tighten the lock nuts after you have fin-ished adjustments.

[Note]¡Variable control mechanism

Standard typeN* : Pressure compensation type (manual

mode)Option type

P* : Pressure compensation type (remote

control mode)

N*Q* : 2-pressure, 2-flow rate control

R*A&* : Solenoid cutoff controlS

W*A&* : 2-pressure controlS

RQ*A&* : 2-pressure, 2-flow rateS

control w/ solenoid cutoff

C*A&* : 2-cutoff controlS

¡* : Pressure adjustment range0 : 2 to 3.5MPa 20.4 to 35.7kgf/cm21 : 2 to 7MPa 20.4 to 71.4kgf/cm22 : 3 to 14MPa 30.6 to 143kgf/cm23 : 3 to 21MPa 30.6 to 214kgf/cm2

¡&* : Applicable to solenoid specifications A, SA&* : SA-G01S&* : SS-G01

1 : 100V 50/60Hz2 : 200V 50/60Hz3 : DC12V4 : DC24V

122N16B1– – – –PVSDesign No. 30: PVS-0*

12: PVS-1*, PVS-2*20: PVS-2*-45N3 only

Pressure adjustment range [Note] Reference

Variable control mechanism [Note] Reference

Max. pump capacity (cm3/rev) Nominal 8, 16, 22, 35, 45

Mounting method B: Mounting flange type A: Mounting foot type

Pump size 0, 1, 2

PVS series variable piston pump

Auxiliary symbol None:Z:

Side port typeAxial port type(PVS-1*, PVS-2*)

*( )

Explanation of model No

Model No. Injection amount cm3

PVS-0B-8 220

PVS-1B-16, 22 300

PVS-2B-35, 45 650

NQ, RS, WS, RQS and CS types are not available for the PVS-0B-8, and the NQ, RQS and CS types are not available

for the PVS-1B-1622-Z and PVS-2B-35

45-Z.

CW

CCW

Pressureadjustment range

Dis

char

gevo

lum

eD

isch

arge

volu

me

Dis

char

ge v

olum

ead

just

men

t ran

ge

CW

CCW

Pressure

Pressure

N2:3-14MPaDis

char

ge v

olum

eD

isch

arge

vol

ume

Dis

char

ge v

olum

eD

isch

arge

vol

ume

Dis

char

ge v

olum

eD

isch

arge

vol

ume

Dis

char

ge v

olum

e

[Example 1]N*: Pressure compensation type (manual mode)PVS-1B-16N2

P2:3-14MPa[Example 2]P*: Pressure compensation type (remote control mode)PVS-1B-16P2

P2:3-14MPa

sol"ON"

sol"OFF"

[Example 4]R*S*: Solenoid cutoff controlPVS-1B-16R2S2Solenoid specifications200V 50/60HzSS-G01

W2:3-14MPa

sol"ON"

sol"OFF"

[Example 5]W*S*: 2-pressure controlPVS-1B-16W2S1Solenoid specifications100V 50/60HzSS-G01

N2:3-14MPa

Q1:2-7MPa

Discharge pressure

[Example 3]N*Q*: 2-pressure, 2-flow rate controlPVS-1B-16N2Q1

R2:3-14MPa

sol"ON"

sol"OFF"Discharge pressure

Discharge pressure

Discharge pressure

Discharge pressure

Discharge pressure

[Example 6]RQ*S*: 2-pressure, 2-flow rate control w/ solenoid cutoffPVS-1B-16RQ2S1Solenoid specifications100V 50/60HzSS-G01

C2:3-14MPa

sol"ON"

sol"OFF"Discharge pressure

[Example 7]C*S*: 2-cutoff controlPVS-1B-16C2S2Solenoid specifications200V 50/60HzSS-G01


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Variable Control MechanismsStandard type

Option type

Symbol External View Characteristics Hydraulic Circuit Explanation

N

NA

CH

I

Drain portPressureadjusting screwFlow rate

adjusting screw

Dis

char

ge v

olum

e

Discharge pressure

0

M

*

*

Dischargeport

Suctionport

Drainport

Pressure compensation type(manual system)

When the discharge pressurereaches the preset volumeset by the pressure compen-sator, the discharge volume isautomatically reduced to holdthe pressure at the set pres-sure.

P

NA

CH

I

Drain portFlow rateadjusting screw

Pilot port Differential pressureadjusting screw(adjustment forbidden)

Dis

char

ge v

olum

e

Discharge pressure

0

M*

*

PilotportDischargeport

Suctionport

Drainport

Pressure compensation type(remote control mode)

This mode demonstrates thesame characteristics as themanual mode.The discharge pressure canbe adjusted by external pilotpressure. The discharge vol-ume can be adjusted manual-ly. Note 2)

NQ

NA

CH

I

P1 pressure adjusting screw

q1 flow rate adjusting screwq2 flow rateadjusting screw

P2 pressureadjusting screwDrain port

q2

q1

P1

P2

Dis

char

ge v

olum

e

Discharge pressure

0

MN *

*

Discharge port

Suctionport

Drainport

2-pressure, 2-flow rate control typeThe discharge volumechanges in two stages by thepump's built- in sequencevalve. This allows convention-al high/ low pressure controlto be performed on a singlepump unit, and save energy inthe hydraulic circuit.

RS

(RA)

SOL b

NA

CH

I

Drain portPressureadjusting screw(at solenoid ON)

Flow rateadjusting screw

SOL"OFF"

SOL"ON"

Dis

char

ge v

olum

e

Discharge pressure

0

M*

*

Discharge port

Suctionport

Drainport

Solenoid cutoff control typeA solenoid valve for unload isintegrated into the pressurecompensation type to minimizeenergy loss when pump outputis not required. Only a slightamount of heat is generated.

WS

(WA)

NA

CH

I

Drain port

Pressureadjusting screw(at solenoid OFF)


Pressureadjusting screw(at solenoid ON)

SOL b

SOL"OFF"

P1 P2

SOL"ON"

Dis

char

ge v

olum

e

Discharge pressure

0M*

*

Discharge port

Suctionport

Drainport

2-pressure control typeTwo pressure compensationtypes can be obtained byswitching the solenoid valveON/OFF. Two types of outputcontrol are possible with theactuator set to a constantspeed.

RQS

(RQA)

SOL b

NA

CH

I

Drain port


P2 pressureadjusting screw(at solenoid ON)

q1 flow rateadjusting screw

q2 flow rateadjusting screw

P2

q1

q2 P1

SOL OFF

SOL ON

Dis

char

ge v

olum

e

Discharge pressure

*

*0

MN

Discharge port

Suctionport

Drainport

2-pressure, 2-flow rate control typew/ solenoid cutoff

The discharge volume can bechanged in two stages by thesequencer valve and solenoidvalve for unload mounted onthe pump, and unloading ispossible when pressure oil isnot required.

CS

(CA)

NA

CH

I

Drain port


q1 flow rate adjusting screwq2 flow rateadjusting screw

Differential pressureadjusting screw(adjustment forbidden)

q1

q2

P1 P2SOL OFF

SOL ON

Dis

char

ge v

olum

e

Discharge pressure

* *0

MN

Discharge port

Suctionport

Drainport

2-cutoff control typeTwo types of pressure - flowrate characteristics can beobtained by the solenoid valveand cylinder mounted on thepump.

Note 1) Many other variable control mechanism are also available in addition to those in the above table. Please consult your agent for details.Note 2) We recommend ZR-T02-*-5895* as the remote control valve. For details, consult your agent. Prevent the pipe volume up to the remote control

valve from falling below 150cm3.


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Manual mode: standard type

Typical characteristics at hydraulic operating fluid kinematic viscosity of 32 mm2/s

PVS-0B-8N*-30

List of Sealing Parts

Pressure Compensation Type

Installation Dimension Drawing

Cross-sectional Drawing

Performance Curves

Discharge portSuction port

G(Former PF)1/2G(Former PF)3/4

MINPressure compensator

Lubrication port

Drain portRc3/8

Lock nut

0–0.012

Discharge portG(Former PF)1/2

Lock nut

142

6

29

110130

R46

106.4

4911

47

78

53.2

132

77

3

11

164.5(MAX)

(flow rateadjustmentlength)18 6

19.0

521

.282

.6

149.5

14

127.5

49.5

525.4

214( MAX)

42.5

510

0 –0.0

210 –0.2

5

f–0

.036

–0.0

71


Pressureadjusting screw

Key width 4.76

Part No. Part Name Part No. Part Name Part No. Part Name

123456789

1011121314

BodyCaseShaftCylinder barrelValve platePistonShoeShoe holderBarrel holderSwash plateThrust bushSpring holderGasketSpring C

1516171819202122232425262728

Spring S Control pistonGuide pinParallel keyRetainerNeedleBall bearingNeedle bearingOil sealSnap ringSnap ringSnap ringO-ringO-ring

29303132

33

34353637383940

Parallel pinSpring pinHexagon socket head boltCross-recessed countersunkhead screwHexagon socket setscrewHexagon nutHexagon plugMetal plugNameplateLubrication port plateCAUTION plateRivet

Parts marked by an asterisk "*" are not available on the market.Consult your agent.

10

10

8

6

4

2

3

5 15

PVS-0B-8N*-30

cm3 /

rev

Relationship between flow rateadjustmentlength ( ) and pump capacity (q)

Pum

p ca

paci

ty q

cm

3 /re

v

Flow rate adjustment range

Flow rate adjustment length mm

Discharge volume Q

Volume efficiency ηv

Overall efficiency η

Input Lin

1800min–1

1800min–1

1500min–1

1500min–1

14143

771.4

0

5060

15141312

6

4

2

0

708090

100

Discharge pressure P MPa kgf/cm2

General Performance

21214

Input Lin

Drain volume DR

Discharge volume Q1800min–1

1800min–1

1500min–1

1500min–1

14143

771.4

00

2

4

6

4

2

0

14

12


Pressure - DischargeVolume Characteristics

21214

1800min–1

1500min–1 1500/1800min–1

1500min–1

14143

771.4

0

2.0

1.5

1.0

0.5

0

Full cutoff pressure MPa kgf/cm2

Axial Input at Full Cutoff

21214

14143

771.4

050

60

80

70


At full cutoff

Measurement position: 1m rear of pump

Noise Characteristics

21214

Q=14.4r/minQ=12r/minQ=10r/minQ=8r/minQ=6r/min

14143

771.4

00

1

2

7

6

5

4

3


Axial Input

21214

1800min–1

Effi

cien

cyη,

ηv%

Dis

char

ge v

olum

eQ

lite

r/m

inIn

put L

in k

W

Inpu

t Lin

kW

Dis

char

ge v

olum

eQ

lite

r/m

inD

rain

vol

ume

DR

lite

r/m

in

Axi

al In

put k

W

Axi

al in

put a

t ful

l cut

off k

W

Noi

se le

vel d

B(A

)Set a flow rate adjustment length withinthe above range. Oil will leak if the pumpis operated below the adjustment rangelower limit.

PartNo.

Part Name Q'tyPVS-0B-8

Size Remarks

13 Packing 1 PS46-100000 3 Bond

23 Oil seal 1 TCV-254511 N.O.K

27 O-ring 1 1B-P9 JIS B 2401

28 O-ring 1 1B-P11 JIS B 2401


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PVS-1B-16N*-(Z)-1222(side port type)

(axial port type)

Parts marked by an asterisk "*" are not available on the market.Consult your agent.


Part No. Part Name Part No. Part Name

123456789

101112131415161718192021

BodyCaseShaftCylinder barrelValve platePistonShoeShoe holderBarrel holderSwash plateThrust bushSeal holderGasketSpring CSpring SControl pistonNeedleKeyNutRetainerPlug

222324252627282930313233

3435363738394041

Ball bearingNeedle bearingOil sealSnap ringSnap ringSnap ringO-ringO-ringO-ringPinHexagon socket head boltCross-recessed coun-tersunk head screwHexagon socket set screwMetal plugNameplateCAUTION plateSpring holderLubrication port plateRivetGuide pin

Part No. Name Q'ty Size Remarks

13 Gasket 1 * Nihon Gasket

24 Oil seal 1 TCN-254511 N.O.K

28 O-ring 1 1B-G55 JIS B 2401

29 O-ring 1 1B-P9 JIS B 2401

30 O-ring 1 1B-P14 JIS B 2401

(MIN)

NA

CH

I

Drain portRc3/8

Key width4.76 0

–0.012

4-M10X16

24

Lubrication port

Discharge portSAEJ518b-3/4

Suction portSAEJ518b-1

525.4

12.5158

22±0.2

47.5

±0.2

649.577

181

5.5

236.5(MAX)

43

23

106.4

130

52

117388

42

124

8213

73

rFlow rateadjustment length

19.0

521

.282

.6

0–0

.021

0–0

.25

φ

φ

–0.0

36–0

.071

φ



NA

CH

I

Rc3/8

4.76 0–0.012

4-M10X164-M10X16

SAE J518b-3/4SAE J518b-1

525.4

12.5

649.577

55

236.5(MAX)

42.5

23(MIN)

183 106.4130

52

1173

88

42

82

137

3

3030110

52.4

±0.2

47.5

±0.2

120 r

19.0

521

.2

82.6

0 –0.0

210 –0

.25

φ

φ

–0.0

36–0

.071

22±0.226.2±0.2

(suction port24 mm dia.)

(discharge port24 mm dia.)


Flow rateadjustment length Drain port Pressure

adjusting screw

Key width

Pressure compensator Lubrication port

5 10 15

10

20

Flow rate adjustment lengthr mm

PVS-1B-16N*-12

PVS-1B-22N*-12

0

30

20

16.5

22

7 5



Relationship between flow rate adjustmentlength (r) and pump capacity (q)

Pum

p ca

paci

ty q

cm

3 /rev

Set a flow rate adjustment lengthwithin the above range. Oil willleak if the pump is operatedbelow the adjustment range lowerlimit.


A

A-8

Pisto

n P

um

ps

Performance Curves Typical characteristics at hydraulic operating fluid kinematic viscosity of 32 mm2/s

PVS-1B-16N*(Z)-12

Discharge volume Q Dischargevolume Q



Input Lin

1800min–1

1800min–1

1500min–1

1500min–1

14143

771.4

0

5040

60

3028262422

12

810

42

6

0

708090

100


General Performance

21214

Input Lin

Drain volume DR

1800min–1

1800min–1

1500min–1

1500min–1

14143

771.4

00

2

4

12

8

4

0

2830

24



21214

1800min–1

1500min–1

1800min–1

1500min–1

14143

771.4

0

2.0

1.5

1.0

0.5

0



21214

14143

771.4

0

60

80

70


At full cutoff

Full cutoff pressureFull cutoff pressure

7MPa3.5MPa

Tank capacity 40


Revolution speed 1800 min–1


21214

Q=30r/min

Q=25r/min

Q=20r/min

Q=15r/min

Q=10r/min

14143

771.4

00

2

4

14

12

10

8

6


Axial Input

21214

640 1 3 5 72

0

30

20

10

Time Hr

Oil Temperature Rise CharacteristicsPVS-1B-16N1-12

8

Full cutoff pressureFull cutoff pressure

7MPa3.5MPa

Tank capacity 60

Revolution speed 1800 min–1

640 1 3 5 72

0

30

20

10

Time Hr8

Effi

cien

cyη,

ηv%

Dis

char

ge v

olum

eQ

r/m

inIn

put L

in k

W

Inpu

t Lin

kW

Axi

al in

put k

W

Dra

in v

olum

eD

R r

/min

Dis

char

ge v

olum

eQ

r/m

in

Axi

al in

put a

t ful

l cut

off k

W

Noi

se le

vel d

B(A

)

Tem

pera

ture

diff

eren

ceTe

mpe

ratu

re d

iffer

ence

Performance Curves Typical characteristics at hydraulic oper-ating fluid kinematic viscosity of 32 mm2/s

PVS-1B-22N*-(Z)-12

0 7 14 0

4

8

12

1800min–1

1500min–1

Input Lin

6050

708090

100

40353025

21

1614

10

6

2

71.4 143 214Discharge pressure P MPa kgf/cm2


1800min–1

1500min–1

General PerformanceDischargevolume Q

Dis

char

ge v

olum

eQ

lite

r/m

inIn

put L

in k

W

Effi

cien

cyη,

ηv%


2170 14 0

4

8

12

Input Lin

1800min–1

1500min–1

14371.4

40

214

30

16

1800min–1

1500min–1

Pressure - Flow RateCharacteristics

0

2

4

Drain volume DR


Dis

char

ge v

olum

eQ

lite

r/m

inD

rain

vol

ume

DR

lite

r/m

in

Discharge volume Q

Inpu

t Lin

kW

21

14

70 140

4

8

12

143

6

71.4 214

2

10

16Axial Input

Q=40

Q=35

Q=30

Q=25

Q=20

r/min

r/min

r/min

r/min

r/min


Axi

al in

put k

W

7

1500min–11800min–1

2140

2.0

21140

143

0.5

1.0

1.5

Axial input at full cutoff kW

71.4Discharge pressure P MPa kgf/cm2

Axi

al in

put a

t ful

l cut

off k

W

14321

214

60

500

80

1800min–1

1500min–1

7 14

70


71.4


At full cutoff


Noi

se le

vel d

B(A

)


A

A-9

Pisto

n P

um

ps


PVS-2B-35N*-(Z)-1245


PVS-2B-35N*-(Z)-12(20)45(side port type)

(axial port type)

PVS-2B-45N3-(Z)-20

PartNo.

Part Name

123456789

101112131415

BodyCaseShaftCylinder barrelValve platePistonShoeShoe holderBarrel holderSwash plateThrust bushSeal holderGasketSpring CSpring S

PartNo.

Part Name

161718192021222324252627282930

Control pistonNeedleKeyNutRetainerPlugBall bearingNeedle bearingOil sealSnap ringSnap ringSnap ringO-ringO-ringO-ring

PartNo.

Part Name

313233

34

35

3637383940414243

Backup ringPinHexagon sockethead boltCross-recessed coun-tersunk head screwFlow rate adjust-ing screwMetal plugNameplateCAUTION plateSpring holderGuideLubrication port plateOrificeRivet


PartNo.

Part Name

123456789

10111213141516

BodyCaseShaftCylinder barrelValve platePistonShoeShoe holderBarrel holderSwash plateThrust bushSeal holderGasketSpring CSpring SControl piston

PartNo.

Part Name

17181920212223242526272829303132

NeedleKeyNutRetainerPlugRoller bearingNeedle bearingOil sealSnap ringSnap ringSnap ringO-ringO-ringO-ringBackup ringPin


PartNo.

Part Name

33

34

35

363738394041424344454647

Hexagon sockethead boltCross-recessed coun-tersunk head screwFlow rate adjust-ing screwMetal plugNameplateCAUTION plateSpring holderGuideLubrication port plateOrificeRivetOrificePinO-ringPlug

Parts marked by an asterisk "*" are not available on the market. Consult your agent.


NA

CH

I

Pressure adjusting screwLock nut

A Bcm3/rev

0 to 30 to 2

3

22.23 0–0.021

0–0.524.9

25.385 0–0.025

0–0.2527.85

12D

20D

35

45


Suction portDischarge port

101.

6

53338

60

6

19215

28

88317 (MAX)

222

69.5

60 MIN

A B

144146172

6513

345

104

172

r

Drain portRc1/2

Key width6.3+0.015

–0.010

4-M10X16

SAEJ518b-1 SAEJ518b-1 4

26.2±0.2

52.4

±0.2 0 –0

.051

1/

Flow rateadjustment length


PressureRange

DesignNo.

020

10

Flow rate adjustment lengthr mm

20

30

40

50

PVS-2B-35N*-12

PVS-2B-45N*-12(20)

45

35

11

8

25 30 35



Relationship between flow rate adjustmentlength (r) and pump capacity (q)

Pum

p ca

paci

ty q

cm

3 /re

v

NA

CH

I

Drain portLock nut

Key width


SAE J518b-1

4-M10X16

53438

6

15

88

69.5

220

6060(MIN)

146172

6513

45 310

417

2

128

52.4

±0.2

58.7

±0.2

30.2±0.2

37 37140

26.2±0.24-M10X16

SAE J518b-11/4

Rc1/2

257 (MAX)

r

6.3 +0.015–0.010

A Bcm3/rev

3

22.23 0–0.021

0–0.524.9

25.385 0–0.025

0–0.2527.85

12D

20D

35

45

101.

6

A B0 –0

.051


Flow rateadjustment length


PressureRange

DesignNo.

(suction port28 mm dia.)

(discharge port28 mm dia.)

0 to 30 to 2

Part No. Part Name Q'tyPVS-2B-35/45

Size Remarks


24 Oil seal 1 TCN-305011Z N.O.K

28 O-ring 1 1B-G70 JIS B 2401

29 O-ring 1 1B-P14 JIS B 2401

30 O-ring 1 1B-P11 JIS B 2401

31 Backup ring 1 T2-P11 JIS B 2407

Part No. Part Name Q'tyPVS-2B-45N3

Size Remarks


24 Oil seal 1 TCN-305011Z N.O.K

28 O-ring 1 1B-G70 JIS B 2401

29 O-ring 1 1B-P14 JIS B 2401

30 O-ring 1 1B-P11 JIS B 2401

46 O-ring 2 1B-P5 JIS B 2401


Set a flow rate adjustment lengthwithin the above range. Oil will leakif the pump is operated below theadjustment range lower limit.


A

A-10

Pisto

n P

um

ps

Discharge volume Q



Input Lin

1800min–1

1800min–1

1500min–1

1500min–1

14143

771.4

0

5060

65605550

30

20

10

0

708090

100

Discharge pressure P MPa kgf/cm2 Discharge pressure P MPa kgf/cm2

General Performance

21214

Input Lin

14143

771.4

00

2

4

30

20

10

0

70

60

50

21214

1800min–1

1500min–1

14143

771.4

0

4

3

2

1

0



21214

14143

771.4

00

4

8

28

24

20

16

12


Axial Input

21214

Q=60r/min

Q=50r/min

Q=40r/min

Q=30r/min

Effi

cien

cyη,

ηv%

Dis

char

ge v

olum

eQ

r/m

inIn

put L

in k

W

Dischargevolume Q

Drain volumeDR

1800min–1

1800min–1

1500min–1

1500min–1


Inpu

t Lin

kW

Dra

in v

olum

eD

R r

/min

Dis

char

ge v

olum

eQ

r/m

in

Axi

al in

put k

W

Axi

al in

put a

t ful

l cut

off k

W

At full cutoff1500min–

11800min–1

14321

214

60

500

80

7 14

70


71.4



Noi

se le

vel d

B(A

)

21214

5060

771.4

0 14143

0

10

20

30

Input Lin 1800min–1

1500min–1

708090

100

7580

7065



Dischargevolume Q

1500min–1

General Performance

1800min–1


Effi

cien

cyη,

ηv%

Dis

char

ge v

olum

eQ

lite

r/m

inIn

put L

in k

W

70

7

4

214

2

0 2114

1800min–1

0

143

10

20

1500min–1

30

0


71.4

80

60


Input Lin

Discharge volume Q

Drain volume DR

1800min–1

1500min–1

Inpu

t Lin

kW

Dra

in v

olum

eD

R li

ter/

min

Dis

char

ge v

olum

eQ

lite

r/m

in

21

28

70 140

8

16

24

Q=80r/minQ=70r/minQ=60r/min

Q=50r/min

Q=40r/min

143

12

71.4 214

4

20

32Axial Input


Axi

al in

put k

W

14321

214

00

1800min–1

1500min–1

7 14


71.4

1

2

3

4


Axi

al in

put a

t ful

l cut

off k

W

At full cutoff1500min–11800min–1

14321

214

60

500

80

7 14

70


71.4



Noi

se le

vel d

B(A

)


PVS-2B-35N*-(Z)-12


PVS-2B-45N*-(Z)-12(20)


A

A-11

Pisto

n P

um

ps

Response Performance

Pressure Compensator

Model No.Response Time (s) Surge Pressure MPakgf/cm2

t1 t2 PS

PVS-0B-8 0.03 to 0.04 0.04 to 0.06 12 to 420.4 to 40.8

PVS-1B-16 0.05 to 0.06 0.07 to 0.08 14 to 740.8 to 71.4

PVS-1B-22 0.05 to 0.06 0.07 to 0.08 15 to 851 to 81.6

PVS-2B-35 0.05 to 0.06 0.05 to 0.07 16 to 961.2 to 91.8

PVS-2B-45 0.05 to 0.06 0.05 to 0.07 16 to 961.2 to 91.8

0

MM

Ps

14MPa

1MPa 1MPa

FC

SOL ONSOL OFFSOL OFF

MPa

Time s

(Q=0)

(Q=MAX)

Q

t1

t2

Test CircuitPiping volume 400 cm3

Pressure MPa

Lege

nd

Response performance changes according to pipe volume and size. Use an anti-surging valve to prevent surge voltage.

Note) O-ring 1A/B-** refers to JIS B2401-1A/B.


PartNo.

Name Q'tySize

For 0B, 1B, 2B

9 O-ring 1 1A-P14

10 O-ring 3 1B-P6

11 O-ring 1 1B-P10

Part No. Part Name Part No. Part Name

1234567

BodySpoolHolderPlungerSpringRetainerPressure adjusting bolt

891011121314

NutO-ringO-ringO-ringPlugPlugMounting bolt


A

A-12

Pisto

n P

um

ps

Pressure Compensation Type (remote control mode)

PVS-0B-8P*-30

PVS-2B-35P*-12(20)45

PVS-1B-16P*-1222

Rc1/4

NA

CH

I

Rc3/8

4.76

4–M10x16

SAEJ518b-3/4 SAEJ518b-1

525.4

12.5158

22±0.2

47.5

±0.2

6

49.577

181

55

43

236(MAX)

106.4

130

52

1173

88

42

124

8213

7

360

r

24f

19.0

5

21.2

82.6

0 –0.2

5

0–0

.021

φ

φ–0

.036

–0.0

71

0–0.012

Flow rate adjust-ment lengthFlow rate adjust-ing screw

Pilot portDrain port

Key width

Differential pressure adjusting screw(adjustment forbidden)

Lubrication port

Discharge port Suction port

G(Former PF)3/2

G(Former PF)1/2

Rc3/8

4.760

–0.012

Rc1/4

142

77

29

110130

R46

106.4

4911

47

78

53.2

132

6

3

11

164.5(MAX)6

19.0

5

21.2

82.6

149.5127.5

49.5

525.4

214(MAX)

42.5

510

93.518

0 –0.2

5

0 –0.0

21φ

φ–0

.036

–0.0

71r

(flow rate adjustment length) Pilot port

Drain port

Lock nut

Flow rate adjusting screw Key width

Discharge port


Lubrication port

G(Former PF)1/2

Explanation of model No.:

Pressure adjustment range 0: 2- 3.5MPa 20.4- 35.7kgf/cm2 1: 2- 7MPa 20.4- 71.4kgf/cm2 2: 3-14MPa 30.6-143kgf/cm2 3: 3-21MPa 30.6-214kgf/cm2

P: Pressure compensation type (remote control mode)


Pump size 0, 1, 2

Design No. 30: PVS-0* 12: PVS-1*, PVS-2* 20: PVS-2*-45P3 only

30P8B0– – –PVS *

SAEJ518b-11/4SAEJ518b-1

Rc1/4

NA

CH

I

Rc1/2

4–M10x16

6.3 +0.015–0.010

144146172

6513

45

104

172

3

101.

6

53338

606

1921526.2±0.2

52.4

±0.2

88

317(MAX)

222

69.5

r

28φ

A B0 –0

.051

φ

φ

φ

A Bcm3/rev

3

22.23 0–0.021

0–0.524.9

25.385 0–0.025

0–0.2527.85

12D

20D

35

45

Pilot port pp

Lock nut

Drain port

Flow rate adjusting screw

Differential pressure adjusting screw (adjustment forbidden)

Lubrication port


Pressure Range

Design No.

Flow rate adjustment length

Key width

0 to 30 to 2

P-Q Characteristics

Set by remotecontrol V

Max

. pum

p ca

paci

ty q

cm

3 /re

v

Discharge pressure P MPa



A

A-13

Pisto

n P

um

ps

2-pressure, 2-flow Rate Control Type

PVS-1B-16N*Q*-1222

PVS-2B-35N*Q*-12(20)45

(MIN)

NA

CH

I

Rc3/8

4.76 0–0.012

4–M10x16


525.4

21.2

82.6

12.5158

22±0.2

47.5

±0.2

6

77

181

19.0

5

49.5

43

296(MAX)

23

106.4

130

521173

88

42

12482

137

3

107.5(MAX)

24φ

0–0

.25

–0.0

71–0

.036

0 –0.0

21φ

φ

Drain port P2 pressure adjusting screw

q1 flow rate adjusting screw


Key width




NA

CH

I

Rc1/2

4–M10x16

6.3+0.015–0.010


101.

6

53338

6

1921526.2±0.2

52.4

±0.2

88

222

352(MAX)

60

60(Min)

144146172

6513

45

107.5(MAX)

104

3

172

A B

0 –0.0

51φ

φ

φ

28φ

A Bcm3/rev

3

22.23 0–0.021

0–0.524.9

25.385 0–0.025

0–0.2527.85

12D

20D

35

45

Drain portP2 pressure adjusting screw



Key width




Pressure Range

Design No.

0 to 30 to 2

NQ: 2-pressure, 2-flow rate control

Max. pump capacity (cm3/rev) Nominal 16, 22, 35, 45

Pump size 1, 2

Pressure adjustment range N*: High-pressure adjustment range, P2Q*: Low-pressure adjustment range, P10: 2- 3.5MPa 20.4- 35.7kgf/cm21: 2- 7MPa 20.4- 71.4kgf/cm22: 3-14MPa 30.6-143kgf/cm23: 3-21MPa 30.6-214kgf/cm2

123 1QN16B1– – –12: PVS-1*, PVS-2*20: PVS-2*-45N3Q*

Design No.

Explanation of model No.: PVS

Pump Model No. q2 Adjustment Range (cm3/rev) Default q2 (Setting cm3/rev)

PVS-1B-16 0 to 10 3.3

PVS-1B-22 0 to 13 4.4

PVS-2B-35 0 to 19 7

PVS-2B-45 0 to 24 9

Note 1) The setting range of maximum pump capacity q1 varies according to the setting ofq2.

Note 2) Overall efficiency at a low flow rate is worse than at the maximum flow rate. Pay atten-tion to this when selecting the motor capacity for the drive.


P1

q1

q2

0 P2

P1

q1

q2

0 P2

P-Q Characteristics


Pum

p ca

paci

ty q

cm

3 /re

v (N

ote

2)

P-Q Characteristics


Pum

p ca

paci

ty q

cm

3 /re

v (N

ote

2)


A

A-14

Pisto

n P

um

ps

Solenoid Cutoff Control Type

PVS-1B-16R*A*-1222 S

PVS-2B-35R*A*-12(20)45 S

The coil surface temperature increases if this pump is kept continuously energized.Do not touch the surface of the coil directly with your hands.


SOL b

NA

CH

I

Rc3/8

4.76 0–0.012

4–M10x16106.4

130

52

11

124

82

137

3

108

215(

SS

-G01

)17

7(S

A-G

01)

42

525.4

21.2

82.6

12.5158

22±0.2

47.5

±0.2

677

181

55

19.0

5

43

47.449.5

199.8

24φ –0.0

36–0

.071

0 –0.2

5

φ

0–0

.021

Pressure adjusting screw (at solenoid ON)

Drain port


Key width

Lubrication port



SAEJ518b-11/4

Rc1/4

NA

CH

I

SOL bRc1/2

144146172

6513

45

194.

5(S

A-G

01)

236(

SS

-G01

)

90.5 10

43

172

53338

606

1921526.2±0.2

52.4

±0.2

88

317(MAX)

222

69.5

SAEJ518b-1

101.

6

A B0 –0

.051

φ

6.3 +0.015–0.010

4–M10x16

28φ

A B

22.23 0–0.021

0–0.524.9

25.385 0–0.025

0–0.2527.85

12D

20D φ

φ

cm3/rev

3

35

45

Pressure Range

Design No.


Lock nut

Flow rate adjust-ing screw

Pilot port

Drain port


Key width


Lubrication port

Suction portDischarge port

0 to 30 to 2


R : Solenoid cutoff controlAS


Pump size 1, 2

1: AC100V2: AC200V3: DC12V4: DC24V

Solenoid power supply

A: SA-G01S: SS-G01

Solenoid specifications

122 1SR16B1– – –Explanation of model No.: PVS


SOL"ON"

SOL"OFF"

P-Q Characteristics


Pum

p ca

paci

ty q

cm

3 /re

v


A

A-15

Pisto

n P

um

ps

2-pressure Control Type

PVS-1B-16W*A*-1222 S

PVS-2B-35W*A*-12(20)45 S


SOL b

NA

CH

I

Rc 3/8

4–M10x16

SAEJ518b-3/4

525.4

21.2

82.6

12.5158

22±0.2

47.5

±0.2

677

181

55

19.0

5

43

49.5

106.4

130

52

11

42

124

8213

73

127

0 –0.2

5

0 –0.0

21φ

–0.0

36–0

.071

φ

4.76 0–0.012

24φ

233(

SS

-G01

)19

5(S

A-G

01)

Pressure adjusting screw (at solenoid OFF)


Drain port


Key width

Discharge port Suction portSAEJ518b-1

Lubrication port


SAEJ518b-11/4

Rc 1/4

NA

CH

I

SOL bRc 1/2

4–M10x16

144146172

6513

45

90.5 10

43

172

53338

606

1921526.2±0.2

52.4

±0.2

88

317 (MAX )

222

69.5

28φ

A B

101.

6–0

.051

0φ

6.3 +0.015–0.010

SAEJ518b-1

212.

5(S

A-G

01)

254(

SS

-G01

)

φ

φ

A Bcm3/rev

3

22.23 0–0.021

0–0.524.9

25.385 0–0.025

0–0.2527.85

12D

20D

35

45

Pressure Range

Design No.

Pressure adjusting screw (at solenoid OFF)

Lock nut


Pilot port pp

Drain port



Key width


Lubrication port


0 to 30 to 2


W : 2-pressure controlAS


Pump size 1, 2

1: AC100V2: AC200V3: DC12V4: DC24V


A: SA-G01S: SS-G01


122 1SW16B1– – –Explanation of model No.: PVS


SOL"ON"

SOL"OFF"

P1 P2

P-Q Characteristics


Pum

p ca

paci

ty q

cm

3 /re

v


A

A-16

Hyd

raulic P

um

ps

2-pressure, 2-flow rate Control Type w/ Solenoid Cutoff

PVS-1B-16RQ*A*-1222 S

PVS-2B-35RQ*A*-12(20)45 S


SOL b

NA

CH

I

Rc 3/8

525.4

21.2

12.5158

22±0.2

47.5

±0.2

623

77

181 19.0

5

49.5

43

221

296(MAX)

106.4

130

52

11

124

8213

73

42

107.5(MAX)4–M10x16

24φ

0 –0.2

5

0 –0.0

21φ

82.6

–0.0

36–0

.071

φ

4.76 0–0.012


215(

SS

-G01

)

177(

SA

-G01

)

P2 pressure adjusting screw (at solenoid ON)

Drain portq1 flow rate adjusting screw


Key width

Differential pressureadjusting screw(adjustment forbidden)

Lubrication port



SOL b

NA

CH

I

Rc 1/2

144146172

65

45

13

90.5

107.5(MAX)

104

317

253338

6

1921526.2±0.2

52.4

±0.2

88

222

352(MAX)

60

28φ

4–M10x16

A B

6.3 +0.015–0.010 19

4.5(

SA

-G01

)

236(

SS

-G01

)


101.

6–0

.051

0φ

φ

φ

A Bcm3/rev

0 30 2

3

22.23 0–0.021

0–0.524.9

25.385 0–0.025

0–0.2527.85

12D

20D

35

45

Pressure Range

Design No.




Drain port

Key width

Lubrication port





RQ : 2-pressure, 2-flow rate control w/ solenoid cutoff

AS


Pump size 1, 2

1: AC100V2: AC200V3: DC12V4: DC24V


A: SA-G01S: SS-G01


122 1SRQ16B1– – –Explanation of model No.: PVS


SOL "ON"

SOL "OFF"


Pum

p ca

paci

ty q

cm

3 /re

v

P-Q Characteristics


A

A-17

Hyd

raulic P

um

ps

2-cutoff Control Type

PVS-1B-16C*A*-1222 S

PVS-2B-35C*A*-12(20)45 S


NA

CH

I

Rc 3/8

4–M10x16

525.4

12.5

158

22±0.247.5

±0.2

677

181

49.5

43

331(SS-G01)

25295(SA-G01)

296(MAX)

106.4

130

5211

12482

137

342

88

80

102

4.76 0–0.012

21.2

19.0

50 –0.2

5

0 –0.0

21φ

82.6

–0.0

36–0

.071

φ

24

SAEJ518b-3/4 Suction port


q2 flow rate adjusting screwDrain port

Key width

Lubrication port

Discharge port


SAEJ518b-11/4

φ


NA

CH

I

Rc 1/2

4–M10x16 144146172

65

45

1390

.5

102

104

317

2

53338

6

1921526.2±0.2

52.4

±0.2

88

222

352(MAX) 60

351(SA-G01)387(SS-G01)

A B


6.3 +0.015–0.010

101.

6–0

.051

0φ

28φ

φ

φ

A Bcm3/rev

0 30 2

3

22.23 0–0.021

0–0.524.9

25.385 0–0.025

0–0.2527.85

12D

20D

35

45

Pressure Range

Design No.

q1 flow rate adjusting screwDrain port


Key width

Differential pressure adjusting screw (adjustment forbidden)P2 pressure

adjusting screwLubrication port




C : 2-cutoff controlAS


Pump size 1, 2

1: AC100V2: AC200V3: DC12V4: DC24V


A: SA-G01S: SS-G01


122 1SC16B1– – –Explanation of model No.: PVS


SOL "ON"

SOL"OFF"


Pum

p ca

paci

ty q

cm

3 /re

v

P-Q Characteristics


A

A-18

Pisto

n P

um

ps

Foot Mounting Kit

Coupling kit

Piping Flange Kit

Kit for PVS-0B: PSCF-100000

For PVS-1B, 2B

Kit Model No. Applicable Pump Model No.Accessories Dimensions

Bolt Q'ty Washer Q'ty A B C E F

IHM-2-10PVS-0B

PVS-1BTB-10×30 2 WP-10 2 127.7 152.5 69.8 1 150.8

IHM-4-10 PVS-2B TB-12×30 2 WP-12 2 220.7 246.5 107.95 1 114.3

Kit Model No.Dimensions Weight

kgH (I) (J) K N P Q (S) T φD φd1 φd2 φd3 φd4

IHM-2-10 96 64.5 32 17.5 13 M10 135 32.5 36.5 82.6 22 11 106.4 50 2.0

IHM-4-10 140 56.7 44 16 16 M12 195.5 12.7 53 101.6 22 11 146 40 5.5

Applicable Pump Model No. PVS-0B-8

Plunger Kit model No. Suction port Discharge port

L 46 40

L1 16 14

φK φ36 φ27

φD φ16 φ12

H 36 27

G screw size G3/4 G1/2

Rc screw size Rc3/4 Rc1/2

O-ring size 1B-P24 1B-P18

When only the mounting feet are required, the pump mounting bolts, washers and other parts are sold together as the Foot Mounting Kit.

Notes) 1. Joints are on sale in the Joint Kit which includes O-rings.2. The dimensions of the O-ring seal section on the

connector conforms with JIS B2351.3. O-ring 1B/B-** refers to JIS B2401-1B.

Notes) 1. The piping flange is on sale in the Flange Kit which includes mounting bolts, washers and O-rings.2. O-ring 1B/B-** refers to JIS B2401-1B.3. For details on tightening torque, see page C-11.

Applicable Pump Model No. PVS-1B-16/22 PVS-2B-35/45

Plunger Kit model No.PSF-101000 PSF-102000

Suction port Discharge port Suction port Discharge port

A 70 65 79 70

B 59 52 73 59

C 52.4 47.5 58.7 52.4

D 26.2 22.0 30.2 26.2

T 24 24 28 24

φd1 φ11 φ11 φ11 φ11

φd2 φ28 φ22 φ37 φ28

X 1 3/4 1-1/4 1

Mounting bolt TH-10×40 TH-10×40 TH-10×45 TH-10×40

Washer WS-B-10 WS-B-10 WS-B-10 WS-B-10

O-ring 1B-G35 1B-G30 1B-G45 1B-G35

Weight kga 0.6 0.5 0.75 0.6


A

A-19

Pisto

n P

um

ps

To improve reliability, design Nos. 17 and 31 were adopted due to remodeling of the grease injection systemconnecting section.

Uni-pump SpecificationsExplanation of model No.

Motor selection curves

¡How to select the motorThe lower side of the output curves for each of the motors shown above indicates the operating range under rated outputfor that motor.

UPV-0A

20420

18418

16316

14314

12210281.612

4

6

16

8 10 212 4 60

2

214

( /min)

20.440.861.2

8

10

12

14

0.75kW

1.5kW

2.2kW

3.7kW

Dis

char

ge v

olum

e Q


10

40

20

30

0.75kW

1.5kW

2.2kW

3.7kW

5.5kW

UPV-1A

20420

18418

16316

14314

12210281.6128 10 212 4 60

21420.440.861.2

( /min)

Dis

char

ge v

olum

e Q


20

80

40

603.7kW

5.5kW

7.5kW

UPV-2A

20420

18418

16316

14314

12210281.6128 10 212 4 60

21420.440.861.2

( /min)

Dis

char

ge v

olum

e Q


Design No. 17: PVS-1B 0.75-5.5kW PVS-2B 3.7 -7.5kW31: PVS-0B 0.75-3.7kW

Pressure adjustment range 0: 2- 3.5MPa 20.4- 35.7kgf/cm2 1: 2- 7MPa 20.4- 71.4kgf/cm2 2: 3-14MPa 30.6-143kgf/cm2 3: 3-21MPa 30.6-214kgf/cm2 (Note) Not available at 45 cm3/rev

Variable control mechanism N: pressure compensation type


Motor mounting method Mounting foot type

Pump size 0: PVS-0B, 1: PVS-1B, 2: PVS-2B

PVS series uni-pump

Number of motor poles 4: 4 poles

0.7: 0.75kW 3.7: 3.7kW1.5: 1.5 kW 5.5: 5.5kW2.2: 2.2 kW 7.5: 7.5kW

Motor output

Auxiliary symbol None: Side port typeZ: Axial port type (PVS-1B, 2B)

Motor terminal None: Right side viewed from shaft endA: Left side viewed from shaft end

Note) UPV-

UPV-2A

is 0.75-5.5kW

is 3.7-7.5kW

0A1A

41 1.5N16A1– – –– – 17(31)–UPV


A

A-20

Pisto

n P

um

ps

UPV-0A-8**-**-4-31(side port type)

UPV-1A-16**-**-4-1722

(side port type)

UPV-2A-35**-**-4-1745(side port type)

1. A class E totally enclosed fan-cooled type is used as the reference motor.2. 200 V/220 V, 60 Hz and 200 V, 50 Hz are used as the reference motor voltages.3. Viewed from the pump side, the suction port on the left side and the discharge port on the right side are used as the

reference port locations.4. Broken lines indicate instances for the A terminal. Broken lines pass through to the other side of the pump along its

center.

Note: A terminal measurements are in parentheses ( ).

(Round drain hole)

View R (4 locations)

R

Lubrication portB terminalA terminal

Discharge portG1/2

Suction portG3/4

Drain portRc 3/8 A terminal B terminal

Fan cover

110

77

ME E

GC

H

KD

KL KLD

J

11

164.5 (MAX)18

50

LIL A

O OFF

N

T

S

127.5149.5

φ


Pressure adjusting screw

(suction port, dischargeport position)

Suction port shape

R


4-M10X16

Lubricationport B terminal


Discharge portSAE518b-3/4

B terminal

4-M10X16

Drain portRc 3/8

24

Pump modelNo. nameplate

A terminal

D

I82

124E E

M

J

CH

G

KL KL

52.4

±0.2

F

77 IL187 (MAX)

47.5

±0.2

55

26.2±0.2

O O

L

N181158 F

22±0.2T

S

A

KDφ

φ

24φ


Pressure adjusting screwA terminal

(suction port, dischargeport position)


Suction port shape

Suction port Discharge portSAEJ518b-1

B terminal


Drain portRc 1/2

B terminal

4-M10X16

4-M10X16

A terminalA terminal

Lubricationport

58.7

±0.2

30.2±0.2

26.2±0.2

69.5

144F

KL

G

L

O

N

O

222

A

JE

104

C

M

52.4

±0.2

H

S

77

TF

257 (MAX)IL

E

I

DKL

192

28φ

SAEJ518b-11/4

28φ

(Round drain hol)KDφ

R(suction port, dischargeport locations)


Installation Dimension Drawings


A

A-21

Pisto

n P

um

ps

Output

kW

Motor Dimensions Frame

No.Weight

A IL C D E F G H I J L M N S×T KD KL O

0.75 124 107.5 80 0- 0.5 160 62.5 50 10 160 − 34 231.5 155 135 10×25 φ22 126 21 80M 12

1.5 142.5 118.5 90 0- 0.5 178 70 62.5 10 179 − 35 261 170 155 10×16 φ22 136 36.5 90L 16

2.2 160.5 136 100 0- 0.5 195 80 70 13 197.5 − 45 296.5 195 175 12×25 φ22 150 45.5 100L 20

3.7 171 143.5 112 0- 0.5 219 95 70 14 221.5 − 45 314.5 224 175 12×25 φ22 161 53 112M 29

5.5 217 163.5 132 0- 0.5 276 108 70 16 270 311.5 50 380.5 250 175 12×25 φ34 217 33.5 132S 48

7.5 217 163.5 132 0- 0.5 276 108 70 16 270 311.5 50 380.5 250 175 12×25 φ34 217 33.5 132S 54

Motor Specifications


Pisto

n P

um

ps

PZS SERIESVARIABLE VOLUME PISTON PUMP *

*

*

M

0

Discharge port

Suction port

Drain port

PZS SeriesVariable Volume Piston Pump

70 to 220cm3/rev70 to 100cm3/rev 28MPa130 to 220cm3/rev 25MPa

¡Handling¡Pump Installation and Piping

PrecautionszUse flexible couplings for connect-

ing the pump shaft to the driveshaft, and prevent radial or thrustload from being applied to thepump shaft.

xEccentricity between the drive shaftand pump shaft should be no greaterthan 0.05mm, with an eccentric angleerror of 1° or less.

cKeep the clamping length of cou-plings and pump shafts at least 2/3the length of the coupling width.

vUse a sufficiently rigid pump mount-ing base.

bSet pump suction side pressure to-0.03 MPa or more (suction portflow velocity less than 2 m/sec).

nRaise part of the drain piping so it isabove the topmost part of the pumpbody, and insert the return section ofthe drain piping into the hydraulicoperating fluid. Also, observe thevalues in the following table in orderto limit the drain back pressure to0.1 MPa.

mMount the pump so the pump shaftis oriented horizontally.

,Use of rubber hose is recommend-ed in order to minimize noise andvibration.


zUse only good-quality hydraulicoperating fluid with a kinematic vis-cosity during operation within therange of 20 to 200 mm2/sec.Normally, you should use an R&Otype and wear-resistant type of IS-OGV32 to 68 or equivalent. Theoptimum kinematic viscosity duringoperation is 20 to 50 mm2/sec.

xThe operating temperature range is5 to 60°C. When the oil tempera-ture at startup is 5°C or less, runthe pump at low pressure and lowspeed until the oil temperaturereaches 5°C.

cProvide a suction strainer with a fil-tering grade of about 100µ (150mesh).

(Continued on following page)

A

A-22

Features

qqHigh pressure, high reliabilityThese pumps deliver the perfect com-bination of high pressure (28MPa286kgf/cm2maximum) and high relia-bility. Hydraulic device energy effi-ciency is ensured because variablevolume capabil i t ies provide themeans to keep the discharge rate tothe desired level.

wwLow noise, low vibration operationThe semi-cylindrical swash plate of

the PVS series provides high supportand rigidity, making it possible toincrease the number of pistons (fromnine to 11) and equip optimal valveplates, all of which make low-noiseoperation possible.

eeHigh reliability, long lifeO-ring seals used for mating surfaceseliminate worries about oil leaks. Aspherical valve plate maintains opti-mal hydraulic pressure balance, for

stable operation across a wide rangeand better contamination resistancecharacteristics.

eeA wide range of possible applicationsIn addition to use as a stand-alonepump, a PVS Series pump can becombined with another IP pump in awide range of possible applications.

Note 1. Fixed discharge pump can be configured by combining with an IP pump.2. Pump capacity adjustment ranges are for control codes N, RS, and WS. For information about control code NQ, see page A-27.3. The standard direction of rotation is clockwise when viewed from the shaft end. Contact your agent for information about counterclockwise rotation.4. A keyed straight shaft is standard. Contact your agent for information about spline shafts.

Specifications

Model No.Item 3B, 4B, 5B 6B

Pipe joint

sizeAt least 3/4" At least 1"

Pipe I.D. At least φ17 At least φ22

Pipe length 1 m or less 1 m or less

Model No.

Pump

Capacity

cm3/rev

(Adjustment

Range)

Rated

Voltage

MPa

kgf/cm2

Maximum

Working

Pressure MPa

kgf/cm2

Pressure Adjustment

Range MPa

kgf/cm2

Revolution Speed min −1

Weight

kg

Fixed Discharge Pump (Note 1)

Min. Max.Capacity

cm3/rev

Pressure

MPa

kgf/cm2

PZS-3B-*-170* 1-10

3

4

70

(45 to 70)

21

214

28

286

2 to 27 20.4 to 071.4

2 to 21 20.4 to 214.4

2 to 28 20.4 to 286.4

500 1800 37 3.6 to 18.1821

214

PZS-4B-*-100* 1-10

3

4

100

(40 to 100)

21

214

28

286

2 to 27 20.4 to 071.4

2 to 21 20.4 to 214.4

2 to 28 20.4 to 286.4

500 1800 58 3.6 to 15.8021

214

PZS-5B-*-130* 1-10

3

4

130

(51 to 130)

21

214

25

255

2 to 27 20.4 to 071.4

2 to 21 20.4 to 214.4

2 to 25 20.4 to 255.4

500 1800 86 3.6 to 32.3021

214

PZS-6B-*-180* 1-10

3

4

180

(101 to 180)

21

214

25

255

2 to 27 20.4 to 071.4

2 to 21 20.4 to 214.4

2 to 25 20.4 to 255.4

500 1800 123 3.6 to 63.9021

214

PZS-6B-*-220* 1-10

3

4

220

(124 to 220)

21

214

25

255

2 to 27 20.4 to 071.4

2 to 21 20.4 to 214.4

2 to 25 20.4 to 255.

500 1500 126 3.6 to 63.9021

214


A

A-23

Pisto

n P

um

ps

vManage hydraulic operating fluid socontamination is maintained atclass NAS10 or lower.

bUse hydraulic operating fluid whenthe operating ambient temperature isin the range of 0 to 60°C.

¡Startup PrecautionszBefore starting up the pump, fill the

pump body with clean hydraulicoperating fluid through the lubrica-tion port.

xAn unload circuit is required whenthe mo to r i s s ta r t ed unde r

condition O−3. Contact your agentabout the unload circuit.

cCheck to make sure that the rotationdirection of the pump is the same asthe rotation direction indicated by thearrow on the pump body.

vAir entering the pump or pipes cancause noise or vibration. At startup,set the pump discharge side to ano-load state, and operate thepump in the inching mode toremove any air that might be in thepump or pipes.

bEquip an air bleed valve in circuitswhere it is difficult to release airbefore startup.(See "IP Pumps" on page C-13.)

¡Configuring Pressure and DischargeRate SettingsThe factory default pump dischargerate setting is the setting's maxi-

mum value, while the default dis-charge pressure is the settings min-imum value. Change the dischargerate and discharge pressure set-tings in accordance with your par-ticular operating conditions.

[Pressure Adjustment]Rotating the pres-sure adjustingscrew clockwiseincreases pres-sure.

[Discharge VolumeAdjustment]

Rotating the flowra te ad jus t ingscrew clockwisedecreases the dis-charge rate.

Note: Securely tighten the lock nut after makingadjustments.

Model No. Oil Amount cm3

PZS-3B 1000

PZS-4B 1800

PZS-5B 2200

PZS-6B 3000

Understanding Model NumbersStandard typePressure compensation(N)

Option type2-Pressure, 2-Flow Rate Control Type (NQ)

Pressure adjustment range 1: 2 to 7MPa 20.4 to 71.4kgf/cm2 3: 2 to 21MPa 20.4 to 214kgf/cm2 4: 2 to 28MPa 20.4 to 286kgf/cm2Note: PZS-5B/6B maximum operating pressure: 25MPa (255kgf/cm2)

Design number

Variable Control Mechanisms N: Pressure compensation control

Pump capacity (cm3/rev) 70, 100, 130, 180, 220

Mounting method B: Flange type mounting A: Foot type mounting

Pump size 3, 4, 5, 6

PZS – – –4 B 100 10N

Pressure adjustment range 1: 2 to 7MPa 20.4 to 71.4kgf/cm2 3: 2 to 21MPa 20.4 to 214kgf/cm2 4: 2 to 28MPa 20.4 to 286kgf/cm2Note: PZS-5B maximum operating pressure: 25MPa (255kgf/cm2)

Design number

Variable Control Mechanisms NQ: 2-pressure, 2-flow rate control

Pump capacity (cm3/rev) 70, 100, 130


Pump size 3, 4, 5

PZS 4 B 100 N Q 10– – –

Pum

p ca

paci

tycm

3 / r

ev

Discharge pressure MPa

P-Q characteristics

PHPL

qL

qH

P-Q characteristics

Pum

p ca

paci

tycm

3 / r

ev


*

*

*M

0

Discharge port

Suction port Drain port

Rotate left

Rotate right

Pressure

Pressure adjustment range

Dis

char

ge

rate

PressureDisc

harg

e ra

te a

djustm

ent r

ange

Disc

harg

e ra

te

Rotate left

Rotate right

*

*

*

M

0

Discharge port

Suction port

Drain port


A

A-24

Pisto

n P

um

ps


Drain port (G3/4)

Pressure adjusting screwPilot port (Rc 1/4)


M10x16

Key width 7.94 0

–0.05

Discharge port

SAEJ518b-11/2

Suction portSAEJ518b-11/4

885261 31

.75

35.3

312

7

58.7

30.2223

296 (MAX)

128164

128

8513

6

18

306 (MAX)

548

34 57

147

17

172

φ0 –0.0

51

30φ

0 –0.0

510 –0.2

5

φ

(PCD 181)

φ

Lubrication port

Pressure Compensation TypeInstalling a remote control relieve valve to thepilot port provides remote control of pressurecompensation.PZS-3B-70N*-10

Solenoid Cutoff Control Type (RS)

2-Pressure Control System (WS)


Design number

Solenoid power supply 1: AC100V 2: AC200V 3: DC12V 4: DC24V

Variable Control Mechanisms RS: Solenoid cutoff control




PZS 4 B– – –100 R S 10


Variable Control Mechanisms WS: 2-pressure control type


Design number

Solenoid power supply 1: AC100V 2: AC200V 3: DC12V 4: DC24V



PZS 4 B 100 W 10S– – –

SOL"ON"SOL"OFF"

P-Q characteristics

Pum

p ca

paci

tycm

3 / r

ev


*

*

*

M

0

Discharge port


SOL"ON"SOL"OFF"

P-Q characteristics

Pum

p ca

paci

tycm

3 / r

evPHPL


*

*

*

M

0

Discharge port



A

A-25

Pisto

n P

um

ps

PZS-4B-100N*-10

PZS-5B-130N*-10

PZS-6B-180N*-10PZS-6B-220N*-10

Flow Adjustment Rotation Angle (r) and Pump Capacity (q)

Use a flow adjustment length that is within the range noted in the abovechart. Using a length that is outside the lower limit adjustment range canlead to oil leaks.

Use a flow adjustment length that is within the range noted in the abovechart. Using a length that is outside the lower limit adjustment range canlead to oil leaks.

Key width 9.53 –0.015

0

Drain port (G3/4)Pressure adjusting screw

Pilot port (Rc 1/4)


Discharge port Suction port161.6200

8

90

153

100

161.

6

257M12x20

1055

347 (MAX)

77.8

42.9

91

81

25

21

195

167

38.1

42.2

33φ

0 –0.0

300 –0.1

5

φ

SAEJ518b-2SAEJ518b-2

( 228.5)

φ

152.

40 –0

.05

φ


Pilot port

(G1/4)Pressure adjusting screw Drain port (G3/4)

Key width 11.113 –0.051

0

667

25M12x20

10100

268316

35

50.8

88.9

362 (MAX)

Discharge port Suction port110

224.6(265)

224.

6(2

65)

155

110

206

70

185

SAEJ518b-21/2SAEJ518b-21/2

22φ

165.

1–0

.040

0

44.

4549

.428

–0.0

510 0 –0.2

5

φ

φ

38φ


Key width

14 0–0.018

Drain port (G1)


Pilot port (G1/4)


(265

)19

4

76

245

8812

560

74

333411

50.8

88.9

25M12x20

131 131(265)

99

(224.6)

(224

.6)

209

22φ

SAEJ518b-3SAEJ518b-21/2

52

φ

165.

1–0

.040

0

50

53.5+0.

021

+0.

008

φ

φ–0

.3 0

105

140

120

130

100

80

20

70

60

51

404245

252015


PZS-5

B-130

PZS-4B-100

PZS-3B-70

Pum

p ca

paci

ty q

cm3 /r

ev

105

225220

200

175180

150

75

125124

100101

252015


PZS-6

B-220

PZS-6B-1

80

Pum

p ca

paci

ty q

cm3 /

rev

Flow rate adjustment length: R

End plugLock nut



A

A-26

Pisto

n P

um

ps

2-Pressure, 2-Flow Rate Control TypePZS-3B-70N*Q*-10

PZS-4B-100N*Q*-10

PZS-5B-130N*Q*-10

Pump Volume Adjustable Range

Pump Model No.Volume Adjustment Range cm3/rev Factory Default

qL Setting (cm3/rev)qH Note 1 qL Note 2

PZS-3B-70N*Q*-10 5 to 70 5 to 40 14

PZS-4B-100N*Q*-10 16 to 100 7 to 60 20

PZS-5B-130N*Q*-10 17 to 130 8 to 70 26

Note1: The setting range for pump maximum capacity qH depends on the qL setting.Note2: Overall efficiency at a low flow rate is worse than at the maximum flow rate. Keep this in

mind when deciding on the drive motor capacity.

Drain port (G3/4)

PH pressure adjusting screw

qH flow rate adjusting screw

M10x16

Key width 7.94 0

–0.05

Discharge port

SAEJ518b-11/2

Suction port

SAEJ518b-11/4

PL pressure adjusting screw

qL flow rate adjusting screw

885 31

.75

35.3

3

12758

.730.2

223 128164

128

8513

6

18

548

34

411 (MAX)

127.5

172279

17

177

30φ

0 –0.0

510 –0

.25

φ

0 –0.0

51φ

PCD 181

φ

Lubrication port

M12x20

Drain port (G3/4)


qH flow rate adjusting screw Key width

9.53 –0.015 0

Discharge port

SAEJ518b-2Suction port

SAEJ518b-2

PL pressure adjusting screw qL flow rate adjusting screw

452 (MAX)

197

129

100

90320257 8

55 1015

2.4

42.2

38.1

77.8

42.9

153

161.

6

200161.6

21

81

91

( 228.5)

φ

0–0

.030

0 –0.1

5

φ

0 –0.0

5φ

33φ

Lubrication port

M12x20

Drain port (G3/4)


qH flow rate adjusting screw

Key width 11.113 –0.051

0


PL pressure adjusting screw qL flow rate adjusting screw

44.4

549

.428

165.

1

667

25 10100268

35

50.8

88.9

466 (MAX)

110224.6265

224.

626

515

5

110

215

141

SAEJ518b-21/2SAEJ518b-21/2

22φ

0 –0.0

40φ

38φ

0 –0.0

5φ

0 –0.2

5

Lubrication port

Discharge pressure MPaPL

qH

qL

PH

P-Q characteristics

cm3/rev

Pum

p ca

paci

ty q


A

A-27

Pisto

n P

um

ps

40 44 48 523640

50

60

70

80

90

100

Adjustment length: L2 (mm)20 22 24 26 28 30 32 3416 1814

0

20

10

30

40

50

60

70

80

Adjustment length: L1 (mm)

90

100

110

120

130

140

32

Pump maximum capacity adjustment length

Pump small capacity adjustment length

PZS-5B

PZS-4B

PZS-3B

PZS-5B

PZS-4B

PZS-3B

qL (small capacity) adjusting screw

qH (maximum capacity) adjusting screw

L1L2

Pum

p ca

paci

ty q

L (c

m3 /

rev)

Pum

p ca

paci

ty q

L (c

m3 /

rev)

PZS Pump 2-Pressure 2-Flow Rate Control Flow Rate Adjustment Graph• Be sure to adjust the low flow rate first, and then adjust the maximum flow rate.• Remember that the maximum flow rate adjustment range (lower limit) changes in accordance with the low flow rate

adjustment. The maximum flow rate adjustment lower limit is equivalent to the low flow rate adjustment length (L1) plus11mm.

• Pump efficiency at a low flow rate is worse than at the maximum flow rate. Keep this in mind when deciding on the drivemotor capacity.


A

A-28

Pisto

n P

um

ps

Solenoid Cutoff Control TypePZS-3B-70R*S*-10

PZS-4B-100R*S*-10

PZS-6B-180R*S*-10PZS-6B-220R*S*-10

Using the installed solenoid valve so it is continuously conducting current can cause the coil surface to become hot.Do not touch the surface of the coil directly with your hands.

Drain port (G3/4)



M10x16

Key width 7.94 –0.05

0

Discharge port

SAEJ518b-11/2Suction port

885261

31.7

535

.33

127

58.7

30.2 223

296 (MAX)

128164172

128

8513

6

18

306 (MAX)

548

34

14520

210

2.5

12857

17SAEJ518b-11/4

(PC

D

181)

φ

0 –0.0

51φ

30φ

0 –0.0

51φ

0 –0.2

5

Lubrication port

Key width 9.53 –0.015

0

Drain port (G3/4)



Discharge port Suction portM12x20

222

129

161.6200

152.

4

8

90

153

100

161.

6

257

38.1

42.2

1055

77.8

42.9

91

81

25

195

21

Lubrication port

347 (MAX)SAEJ518b-2SAEJ518b-2

0 –0.0

5φ

33φ

0 –0.0

30φ

0 –0.1

5

( 228.5)φ


Pressure adjusting screwDrain port (G3/4)

Key width 11.113 0

-0.051


M12x20

133

232

14170

32.5 44.4

549

.428

165.

1

667

2510100

268316

35

50.8

88.9

362 (MAX)

110224.6265

224.

626

515

5

110

SAEJ518b-21/2SAEJ518b-21/2

22φ

0 –0.0

51 0 –0

.25

φ

φ

0 –0.0

40

38φ

Lubrication port


Key width14 0

–0.018

Drain port (G1)



M12x20

147

156.

525

6

(265

)19

4

76

245

8812

50

165.

1

53.5

560

74

333410.5

50.8

88.9

25131 131

(265)

99

(224.6)

(224

.6)

52

22

φ

φ


+0.

021

+0.

008

φ

0 –0.0

40φ

Lubrication port

PZS-5B-130R*S*-10


A

A-29

Pisto

n P

um

ps

2-Pressure Control TypePZS-3B-70W*S

PZS-4B-100W*S*-10

PZS-5B-130W*S*-10

PZS-6B-180W*S*-10PZS-6B-220W*S*-10

Using the installed solenoid valve so it is continuously conducting current can cause the coil surface to become hot. Do not touch the surface of the coil directly with your hands.

Drain port (G3/4)


M10x16

Key width 7.94 0

–0.05

Discharge port

SAEJ518b-11/2

Suction port



242

885261

31.7

535

.33

12758

.730.2 223

296 (MAX)

128164

128

8513

6

18

306 (MAX)

548

34 (PCD 181)

145

102.

5

12857

30

17SAEJ518b-11/4

φ

φ

0 –0.0

510 –0

.25

φ

φ 0 –0

.051

Lubrication port

172

Key width 9.53 –0.015

0

Drain port (G3/4)


Discharge port

SAEJ518b-2


M12x20

PH pressure adjusting screwPL pressure adjusting screw

33

262

129

161.6200

152.

4

8

90

153

100

161.

6

257 38.1

42.2

1055

347 (MAX)

77.8

42.9

91 ( 228.5)

81

25

21

φ

φ

φ

φ0 –0

.15

0 –0.0

30

0–0

.05

Lubrication port


Drain port (G3/4)

Key width 11.113 –0.051

0

Discharge port Suction portSAEJ518b-21/2SAEJ518b-21/2

M12x20



32.5 44.4

5

49.4

28

165.

1

667

2510100

268316

35

50.8

88.9

362 (MAX)

272

133

14170

110224.6(265)

224.

6(2

65)

155

110

22

Lubrication port

φ

0 –0.2

5

0 –0.0

51

0 –0.0

40

φ

φ


Key width 14 0

–0.018

Drain port (G3/4)


M12x20



147

156.

5

(265

)19

4

76

245

8812

50

165.

1

53.5

560

74

333410.5

50.8

88.9

25131 131

(265)

99

(224.6)

(224

.6)

22

296

52φ


φ

0 –0.0

40

+0.

021

φ+

0.00

8

φ

Lubrication port


A

A-30

Pisto

n P

um

ps

Discharge pressure P MPakgf/cm2

0 7 14 21 2870.4 143 214 286

20

30

10

0

40

50

60

100

110

120

130

50

60

70

80

90

100

1800min–1

1500min–1



1500min–1

1800min–1

General Performance

LinLin

Q


0 7 14 21 2870.4 143 214 286

2

0

8

6

4

1800min–1

1500min–1



0 7 14 21 2870.4 143 214 286

60

80

70 1800min–1

1500min–1


DR


0 7 14 21 2870.4 143 214 286

20

0

40

60

0

5

10

100

120

140

1800min–1

1500min–1

1500min–1

1800min–1

Pressure - Flow Rate Characteristics

Q


0 7 14 21 2870.4 143 214 286

Q=126r/min

Q=100r/min

Q=80r/min

Q=60r/min

30

40

20

10

50

60

Axial input

Effi

cien

cyη,

ηv%

Axia

l inp

ut a

t ful

l cut

off

kW

Dis

char

ge r

ate

Q r

/min

D

isch

arge

rat

e Q

r/m

in

Inpu

t Lin

kW

Inpu

t Lin

kW

Axi

al in

put k

W

Dra

in r

ate

DR

r/m

inN

oise

Lev

el d

B(A

)


0 7 14 21 2870.4 143 214 286

20

0

40

60

80

140

160

180

50

60

70

80

90

100

1800min–1

1500min–1



1500min–1

1800min–1

General Performance

LinLin

Q


0 7 14 21 2870.4 143 214 286

2

0

8

6

41800min

–1

1500min–1

Axial input at full cutoff


0 7 14 21 2870.4 143 214 286

60

80

70

1800min–1

1500min–1


DR


0 7 14 21 2870.4 143 214 286

20

0

40

60

80

0

5

10

100

140

1801800min–1

1500min–1

1500min–11800min

–1

Pressure - Flow Rate Characteristics

Q


0 7 14 21 2870.4 143 214 286

Q=60r/min

Q=100r/min

Q=180r/min

Q=140r/min

60

80

40

20

100

Axial input

Effi

cien

cyη,

ηv%

Dis

char

ge r

ate

Q r

/min

D

isch

arge

rat

e Q

r/m

in

Inpu

t Lin

kW

Inpu

t Lin

kW

Dra

in r

ate

DR

r/m

inN

oise

Lev

el d

B(A

)

Axi

al in

put k

W

Axia

l inp

ut a

t ful

l cut

off

kW

Performance Curves Typical Characteristics at a Hydraulic Operating Fluid Kinematic Viscosity of 46 mm2/s

PZS-3B-70N*-10

Typical Characteristics at a Hydraulic Operating Fluid Kinematic Viscosity of 46 mm2/sPZS-4B-100N*-10


A

A-31

Pisto

n P

um

ps


0 7 14 21 2570.4 143 214 255

40

60

20

0

80

100

120

180

200

220

240

50

60

70

80

90

100

1800min–1

1500min–1



1500min–1

1800min–1

General Performance

Lin

Q


0 7 14 21 2570.4 143 214 255

60

80

70

1800min–1

1500min–1



0 7 14 21 2570.4 143 214 255

Q=234r/min

Q=200r/min

Q=150r/min

Q=100r/min

60

80

40

20

100

120Axial input


0 7 14 21 2571 143 214 255

40

0

80

120

0

5

10

160

200

240

1800min–1

1500min–1

1500min–1

1800min–1

Pressure – Flow Rate Characteristics


0 7 14 21 2571 143 214 255

2

0

12

14

10

8

6

4


1800min–1

1500min–1

Effi

cien

cyη,

ηv%

Dis

char

ge r

ate

Q r

/min

Dis

char

ge r

ate

Q r

/min

D

rain

rat

e D

R r

/min

Inpu

t Lin

kW

Inpu

t Lin

kW A

xial

inpu

t kW

Axi

al in

put a

t ful

l cut

off

kW

Noi

se L

evel

dB

(A)



0 7 14 21 2570.4 143 214 255

40

60

20

0

80

100

120

140

240

270

330

300

50

60

70

80

90

100

1800min–1

1500min–1



1500min–11800min

–1

General Performance

Lin

Q


0 7 14 21 2570.4 143 214 255

2

0

12

14

16

10

8

6

4

1800min–1

1500min–1



0 7 14 21 2570.4 143 214255

60

80

70

1800min–1

1500min–1



0 7 14 21 2570.4 143 214 255

Q=324r/min

Q=250r/min

Q=200r/min

Q=150r/min

60

100

80

40

20

140

120

Axial input

Effi

cien

cyη,

ηv%

Dis

char

ge r

ate

Q r

/min

Dis

char

ge r

ate

Q r

/min

D

rain

rat

e D

R r

/min

Inpu

t Lin

kW

Inpu

t Lin

kW Axi

al in

put k

W

Axi

al in

put a

t ful

l cut

off

kW

Noi

se L

evel

dB

(A)

Lin

DR


0 7 14 21 2571 143 214 255

40

0

80

120

160

0

5

10

210

270

330

1500min–1


Q

1800min–1

1800min–1

1500min–1



A

A-32

Pisto

n P

um

ps


Cross-sectional DrawingPZS-3B-70N*-10PZS-4B-100N*-10PZS-6B-**N*-10


Part No. Part Name

123456789

101112131415161718192021222324252627

BodyCaseShaftCylinder barrelValve platePistonShoeShoe holderBarrel holderSwash plateThrust bushSeal holderThrust plateSpring CSpring SControl pistonEnd plugGuide screwSpring holderRetainerNeedleKeyPlugPinOrificeNutBall bearing

Part No. Part Name

28293031323334353637383940414243444546474849505152

Needle bearingOil sealSnap ringSnap ringSnap ringO-ringO-ringO-ringO-ringO-ringO-ringO-ringO-ringBackup ringOrificeFlat philips head screwPlugPinBoltPlugO-ringPlateWasherBoltEye bolt

Part

No.Name

Product NumberRemarks

PZS-3B Q'ty PZS-4B Q'ty PZS-6B Q'ty

29 Oil seal TCN-456812 1 TCN-507212 1 TCN-659013 1 NOK

33 O-ring 1B-G95 1 1B-G105 1 1B-G135 1 JIS B 2401

34 O-ring 1B-G130 1 1B-G155 1 1B-G200 1 ″35 O-ring 1B-G50 1 1B-G50 1 1B-G65 1 ″36 O-ring 1B-P34 1 1B-P36 1 1B-P41 1 ″37 O-ring 1B-P12 1 1B-P16 1 1B-P16 1 ″38 O-ring 1B-P21 2 1B-P21 3 1B-P21 3 ″39 O-ring Note 1 1 1B-P9 1 1B-P10 1 ″40 O-ring 1B-P8 5 1B-P8 5 1B-P8 8 ″41 Backup ring T2-P12 1 T2-P16 1 T2-P16 1 JIS B 2407

48 O-ring Note 1 1 1B-G85 1 1B-G85 1 JIS B 2401

Note 1: Contact your agent about this type of O-ring.


0 7 14 21 2570.4 143 214 255

40

60

20

0

80

100

120

140

240

270

330300

50

60

70

80

90

100



1500min–1

1200min–1

General Performance

Lin


0 7 14 21 2570.4 143 214 255

2

8

10

12

14

16

6

4

1500min–1

1200min–1

Axial Input at Deadhead


0 7 14 21 2570.4 143 214 255

60

80

70 1200min–11500min–1


1500min–1

1200min–1Discharge rate Q

Input


0 7 14 21 2570.4 143 214 255

Q=330r/min

Q=250r/min

Q=200r/min

Q=150r/min

80

100

40

60

20

10

120

160

140

Axial input

Effi

cien

cyη,

ηv%

Dis

char

ge r

ate

Q r

/min

D

isch

arge

rat

e Q

r/m

in

Dra

in r

ate

DR

r/m

in

Inpu

t Lin

kW

Inpu

t Lin

kW Axi

al in

put k

W

Axi

al in

put a

t Dea

dhea

d kW

Noi

se L

evel

dB

(A)

Lin

DR


0 7 14 21 2571.4 143 214 255

40

0

80

120

160

0

5

10

210

270

3301500min–1

1200min–1

1500min–1

1200min–1


QDischarge rate

Drain rate

Input


A

A-33

Pisto

n P

um

ps

PZS-5B-130N*-10

PZS-5B

Pressure Compensator

Part No. Part Name

2829303132333435363738394041424344454647484950515253

Ball bearingNeedle bearingOil sealSnap ringSnap ringSnap ringO-ringO-ringO-ringO-ringO-ringO-ringO-ringBackup ringBoltFlat philips head screwPlugPlugPlugOrificeO-ringPlateWasherBoltPlugEye bolt

Part No. Part Name

12345678910

10-110-210-310-410-511

Valve body SpoolSpring guideSprint bearingSpringRetainerNeedle valveValve seatSpringAdjustment screw kitAdjustment screwNutO-ringNutSpring pinRetainer

Part No. Part Name

1213141516171819202122

CollarPlugPlugNutSocket head screwO-ringO-ringO-ringO-ringO-ringPlug


Part No. Name Q'ty Size Remarks

13 Gasket 1 * 3 Bond

30 Oil seal 1 TCN-608212 N. O. K

34 O-ring 1 1B-G125 JIS B 2401

35 O-ring 2 1B-P21 JIS B 2401

36 O-ring 1 1B-P16 JIS B 2401

37 O-ring 1 1B-P42 JIS B 2401

38 O-ring 1 1B-P14 JIS B 2401

39 O-ring 5 1B-P8 JIS B 2401

40 O-ring 2 1B-P7 JIS B 2401


48 O-ring 1 1B-G85 JIS B 2401

Part No. Part Name

123456789

101112131415161718192021222324252627

BodyCaseShaftCylinder barrelValve platePistonShoeShoe holderBarrel holderSwash plateThrust plateSeal holderGasketSpring CSpring SControl pistonEnd plugGuide screwThrust bushSpring holderRetainerNeedleKeyPlugPinConnectorNut


PZM-*-10 IHM-55-10

A

A-34

Pisto

n P

um

ps


Screw In Type

Welded Type

Foot Mounting Installation Measurement Chart

Piping Flange Kit

Foot Mounting

Kit Model No.

Applicable Pump

Model No.

Accessories Measurements (mm)

Bolt Q'ty Washer Q'ty A B C E F G H (I)

PZM-3-10 PZS-3B TH-16×40 4 WP-16 4 295.3 334 152.4 1 − 139.7 203 104.5

PZM-4-10 PZS-4B TB-20×45 4 WP-20 4 290 334 160 1 − 135 198 95

IHM-55-10 PZS-5B, 6B TH-20×50 4 WS-B-20 4 330 370 200 1 125 125 300 40

Foot Mounting

Kit Model No.

Measurements (mm) Weight

kg(J) K L M N P Q R (S) T φD φd1 φd2 φd4

PZM-3-10 60 25 128 128 25 M16 259 - 44.5 61 127 35 18 φ186 13.5

PZM-4-10 62 28 161.6 161.6 25 M20 270 220 33 62 152.4 34 18 φ152.4 18.0

IHM-55-10 70 (Note) 30 224.6 224.6 30 M20 340 275 20 90 165.1 34 18 φ140 32.0

Note The IHM-55-10 (J) dimension (70) is the value for the PZS-5B. This dimension becomes 58 in the case of the PZS-6B.The IHM-55-10 (I) dimension (40) is the value for the PZS-5B. This dimension becomes 28 in the case of the PZS-6B. See the IHM-45-10 on pages B-36 and C-12 to see what the PZM-3-10 looks like.

Screw In Type

Flange Kit model No.

Applicable Pump

Model No.

IN Flange

Flange Part No. Bolt Washer O-ring

PJF-10300T PZS-3B IH03J-100120 1 TH-12×55 4 WS-B-12 4 1B-G50 1




Welded Type

Flange Kit model No.

Applicable Pump

Model No.

IN Flange


PJF-10300E PZS-3B IH03J-200120 1 TH-12×55 4 WS-B-12 4 1B-G50 1




OUT FlangePlug


IH03J-100100 1 TH-10×55 4 WS-B-10 4 1B-G40 1 TPHA-1/4 1

IH03J-100160 1 TH-12×60 4 WS-B-12 4 1B-G60 1 −

IH03J-100200 1 TH-12×65 4 WS-B-12 4 1B-G75 1 −

IH03J-100200 1 TH-12×65 4 WS-B-12 4 1B-G75 1 −

OUT FlangePlug


IH03J-200100 1 TH-10×55 4 WS-B-10 4 1B-G40 1 TPHA-1/4 1

IH03J-200160 1 TH-12×60 4 WS-B-12 4 1B-G60 1 −

IH03J-200200 1 TH-12×65 4 WS-B-12 4 1B-G75 1 −

IH03J-200200 1 TH-12×65 4 WS-B-12 4 1B-G75 1 −

• See page C-11 for dimensions.• O-ring 1B-** refers to JIS B2401-1B-**.• See page C-11 for details on tightening torque.

Foot Mounting Kit

4 to PLR

GH

ST TAB

CK J

I

d2d1φ

φ

NE

QM Dφ

4-PLR

d1d2

EN T TAB

MQ

C

GF SH

K (J)

(I)

D d4

φφ

φ φ

Part

No.Name

Part NumberRemarks

PZS-3B, 4B Q'ty PZS-5B, 6B Q'ty

10-3 O-ring 1B-P10A 1 1B-P10A 1 JIS B 2401

17 O-ring 1B-P8 1 1B-P11 2 ″18 O-ring 1B-P9 4 1B-P9 5 ″19 O-ring 1B-P5 1 1B-P14 1 ″20 O-ring 1B-P12 1 1B-P22 1 ″21 O-ring 1B-P14 1 1B-P14 1 ″


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A-35

PZ SERIES PROPORTIONALVOLUME PISTON PUMP

PZ SeriesLoad Sensitive Variable Piston Pump

35 to 220cm3/rev21MPa

Features

qThe PZ Series load sensitive vari-able piston pump employs the semi-cylindrical swash plate that is part ofthe basic technology used by thePVS series variable piston pump.To this it adds a hydrostatic bearingmechanism, valve plate, and othernoise reducing mechanisms for

operation that is even quieter thanthat of PVS Series pumps.

wThe pump body houses an electro-hydraulic proportional control valve,compensator, and surge cutoffvalve, which eliminates the need forsuperfluous piping.

eThe electro-hydraulic proportional con-

trol valve uses the proven force feed-back system for improved hysteresis,repeatability, and response.

rThe ability to create a double pumpconfiguration with an IP pump fur-ther expands the range of possibleapplications.

Pressure/Flow Rate Control System SpecificationsPressure Control System

Flow Rate Control System

Pump System Specifications

Note1. Can be used in combination with an IP pump to config-ure a fixed discharge pump.

Note2. The PZ-4B-130 model number was changed to PZ-5B-130.

Note3. Maximum flow rate depends on the revolution speed. Values in the above table are fora speed of 1800min-1 for the PZ-2B to PZ-6B-180, and 1500min-1 for the PZ-6B-220.

Model No.Pump

Capacitycm3/rev

MaximumWorkingPressure

MPakgf/cm2

Pressure AdjustmentRange

MPa kgf/cm2

Flow ControlLimit Range r/minNote 3

Revolution Speed min−1

Weightkg

Fixed Discharge Pump Note 1

Min. Max.Capacitycm3/rev

PressureMPa

kgf/cm2

PZ-2B-*-135E1A-1123

3521

214

2 to 1720.4 to 071.42 to 1420.4 to 143.42 to 2120.4 to 214.4

1 to 63 600 2000 36 3.6 to 18.1821

214

PZ-2B-*-145E1A-112

4514

1432 to 1720.4 to 071.42 to 1420.4 to 143.4

1 to 80 600 2000 36 3.6 to 18.1821

214

PZ-3B-*-170E1A-1023

7021

214

2 to 1720.4 to 071.42 to 1420.4 to 143.42 to 2120.4 to 214.4

1 to 126 600 1800 60 3.6 to 15.8021

214

PZ-4B-*-100E1A-1023

10021

214

2 to 1720.4 to 071.42 to 1420.4 to 143.42 to 2120.4 to 214.4

1 to 180 600 1800 76 3.6 to 15.8021

214

PZ-5B-*-130E1A-102

(Note 2) 3130

21214

2 to 1720.4 to 071.42 to 1420.4 to 143.42 to 2120.4 to 214.4

3 to 234 600 1800 100 3.6 to 32.321

214

PZ-6B-*-180E1A-2023

18021

214

2 to 1720.4 to 071.42 to 1420.4 to 143.42 to 2120.4 to 214.4

3 to 324 600 1800 160 3.6 to 63.9821

214

PZ-6B-*-220E1A-2023

22021

214

2 to 1720.4 to 071.42 to 1420.4 to 143.42 to 2120.4 to 214.4

3 to 330 600 1500 162 3.6 to 63.9821

214

Pressure Control

Range

MPa kgf/cm2

1 : 2 to 1720.4 to 071.42 : 2 to 1420.4 to 143.43 : 2 to 2120.4 to 214.4

Rated Current mA 800

Coil Resistance Ω 20(20°C)

Hysteresis % 3% max. Note 1

Valve DifferentialPressure

MPa kgf/cm2110 Note 2

Rated Current mA 800

Coil Resistance Ω 20(20°C)

Hysteresis % 3% max. Note 1

Note 1. Value when a Nachi-Fujikoshi specialamplifier is used (with dithering).

Note 2. Pressure differential of pump dischargepressure (valve IN side) and load pressure(valve OUT side).

Note 3. For information about power amplifiers, seepages I-26 through I-37.

PZ-2B/3B/5B

PZ-6B

PZ-4B-100

0M

* *

*

Discharge portT port

Suction port

Specifications

0M

*

*

Discharge portT port

Suction port

0M

*

*

T1 port

T2 port

Discharge port

Suction port


A

A-36

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ing the pump shaft to the driveshaft, and prevent radial or thrustload from being applied to thepump shaft.

xEccentricity between the drive shaftand pump shaft should be nogreater than 0.05mm, with aneccentric angle error of 1° or less.

cKeep the clamping length of cou-plings and pump shafts at least 2/3the length of the coupling width.


bSet pump suction side pressure to −0.03 MPa or more (suction port flowvelocity less than 2 m/sec).

nRaise part of the drain piping so it isabove the topmost part of the pumpbody, and insert the return sectionof the drain piping into the hydraulicoperating fluid. Also, observe thevalues in the following table in orderto limit the drain back pressure to0.1 MPa

mMount the pump so the pump shaftis oriented horizontally.

,Use of rubber hose is recommend-ed in order to minimize noise andvibration.


zUse only good-quality hydraulicoperating fluid with a kinematic vis-cosity during operation within therange of 20 to 200 mm2/sec.Normally, you should use an R&Otype and wear-resistant type of IS-OGV32 to 68 or equivalent.The optimum kinematic viscosityduring operation is 20 to 50mm2/sec.

xThe operating temperature range is5 to 60°C. When the oil tempera-ture at startup is 5°C or less, runthe pump at low pressure until theoil temperature reaches 5°C.

cProvide a suction strainer with a fil-tering grade of about 100µ (150mesh). Provide a return line filter of grade20µm or less on the return line tothe tank. (When the pump is usedat a high pressure of 14 MPa orgreater, a filter of 10µm or less isrecommended.)

vManage hydraulic operating fluid socontamination is maintained atclass NAS10 or lower.

bUse hydraulic operating fluid whenthe operating ambient temperatureis in the range of 0 to 60°C.

¡Startup PrecautionszBefore starting up the pump, fill the

pump body with clean hydraulicoperating fluid through the lubrica-tion port.

xCheck to make sure that the rotationdirection of the pump is the same asthe rotation direction indicated by thearrow on the pump body.

cAir entering the pump or pipes cancause noise or vibration. At startup,set the pump discharge side to ano-load state, and operate thepump in the inching mode toremove any air that might be in thepump or pipes.

vEquip an air bleed valve in circuitswhere it is difficult to release airbefore startup. (See "IP Pumps" onpage C-13.)

bTo enable superior pressure andflow control, loosen the air ventwhen starting up the pump in orderto release any air, and fill the insideof the solenoid with hydraulic oper-ating fluid. You can change theposition of the air vent by rotatingits cover.

nBefore adjusting the manual adjust-ing screw from the first time orwhen there is no input current tothe valve due to electrical malfunc-tion or some other reason, you cancontrol pump pressure and flowrate by rotating the manual adjust-ing screw. Normally, the manualadjusting screw should be returnedcompletely to its original positionand secured with the lock nut.

Model No. Oil Amount cm3

PZ-2B 650

PZ-3B 1000

PZ-4B 1800

PZ-5B 2200

PZ-6B 3000

Understanding Model Numbers

Item

Model No.PZ-2B

3BPZ-4B

5BPZ-6B

Pipe Joint

Size

At least

1/2"

At least

3/4"At least 1"

Pipe I.D. At least φ12 At least φ17 At least φ22

Pipe Length 1 m or less 1 m or less 1 m or less

Pressure adjustment range (See specifications.) 1, 2, 3

Control mechanism EA: Load response control

Mounting method B: Flange type mountingA: Foot type mounting

Fixed discharge pump capacity (cm3/rev) 3.5 to 64 (See IP pump C-1.)

Variable pump capacity (cm3/rev) 35, 45, 70, 100, 130, 180, 220

Pump size 2, 3, 4, 5, 6

PZ Series Piston Pump

Design number 11: PZ-2B, 2A10: PZ-3B to 5B20: PZ-6B

Auxiliary symbol

PZ – – – –3 B 10 70 E 2 A 10


A

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Installation Diagram

Suction port

Key width6.3+0.015

–0.010

Drain portRc 1/2

T portRelief valve pressure adjusting screwRc 3/8

4-M10x16

Discharge port 23

SAEJ518b-3/4

Lubrication port

Connecting cord diameter 8 to 10

Manual pressure adjusting screw

Air vent

Manual flow rate adjusting screw

Air vent

P portRc 1/4


4-M10x16

Note

:aNo

te:b 10

1.6

53338

6

(Suction port position dimension)

15

88 60184

222425

47.5

22

66

146172

6510

28

175

13

72163117

16919

2234

135

30.2

58.7

28φ

φ

φ

0 –0.0

51φ


Lubrication port

4–M10x25


Manual pressure adjusting screwAir vent

T port RC1/2

(PT1/2)

Discharge port 23SAEJ518b-1

Relief valve pressure adjusting screw

Key width 9.53 0–0.015

Drain port G3/4

Suction port

4–M12x20

825223

347

257 (Suction port position dimension)278

52.4

26.2

9081

55 10

152.

4

38.1

42.2

91

153

100

4–21200

161.6

161.

6

204

205

77.8

48

42.9

φ

φ

0 –0.0

30 –0

.15

φ

φ0 –0

.05

Key width7.94 0

–0.05

DR portRc3/4 (PT3/4)Lubrication

port



4-M10x16Discharge port 23

SAEJ518b-1

T port (Rc 1/2)

Air vent


Air vent

Suction port

SAE J518b-1 1/2

P portRc 1/4

4– φ22

Connecting cord diameter 8 to 10

4-M10x16

Suction port configuration

34.9

38.5

548

58219

225 (Suction port position dimension)

258

85

52.4

26.2

66

459.5 (MAX)

165.

1

224.6137

224.

6

265

234

(MA

X)

181

124

90

2658

168.

519

2

148

36

7038

0 –0.0

51φ

φ 0 –0

.040

φ

φ

φ

PZ-2B-3545

PZ-3B-70

PZ-4B-100

Notea b

Single Pump 0φ22.23 −0.021

024.9 −0.5

Double Pump with Fixed Flow IP 0φ25.385 −0.025

027.85 −0.25


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Air ventManual pressure adjusting screw


T2 port Rc 3/8

Lubrication port

Key width14

0–0.018

Air vent

4-M12x20 Discharge port 28SAEJ518b-11/2

P portRc 1/2

4- 22

T1 port Rc 3/4

Drain portG1 (PF1)



4-M16x24

70

36

50

165.

1

53.5

560

90123

317361

591

Suction port

37888

12

74

99


106.

4

61.9

70

224.

6

224.6

(265

)

221

245(287

)

195

194

186131241

(265)

φ

φ

φ

+0.

021

+0.

008

φ

φ0 –0

.040

PZ-6B-180220

Air vent



4-M12x20Discharge port 28SAEJ518b-11/2

T port Rc3/4

Drain port G3/4

Key width11.113 0

–0.051

Lubrication port

4- 22


P portRc 1/2

Air vent

Connecting cord diameter 8 to 10 Relief valve pressure adjusting screw

Lubrication port

4-M12x2050.8

88.9

60

110224.6(265)

224.

6(2

65)

155

24528

7

175

220165

44.4

549

.428

165.

1

667

25 10

100


35

70

36

526 (MAX)

Suction port

313

252

87

90

φ0 –0

.040

0 –0.2

5

0 –0.0

51φ

φ

φ

φ

PZ-5B-130


A

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Input current mA Input current mA

0 200 400 600 1000800

40

20

0

60

80

100

PZ-2B-

PZ-2B-45

E3A

E2A

E1A

PZ-2B-35

3545

0 200 400 600 1000800

50

0

150

100

PZ-3B-70

Input current mA

0 200 400 600 1000800

50

0

200

150

100

PZ-4B-100

Input current mA Input current mA

0 200 400 600 1000800

100

0

200

300

PZ-5B-130

0 200 400 600 10008000

350

200

100

300

PZ-6B-180/220

Input current mA

0 200 400 600 1000800

71.47

0

21214

14143

Input Current–Discharge Pressure Characteristics

Dis

char

ge r

ate

Q r

/min

Dis

char

ge r

ate

Q r

/min

Dis

char

ge r

ate

Q r

/min

Dis

char

ge p

ress

ure

MP

a (k

gf/c

m2 )

Dis

char

ge r

ate

Q r

/min

Dis

char

ge r

ate

Q r

/min


0 7 14 2171.4 143 214

20

30

10

0

50

505560

60708090

65

100



1500min–11800min

–1

PZ-2B-35

Input Lin

Discharge rate Q 1800min–1

1500min–1


0 7 14 2171 143 214

203040506070

100

5040

160180

60708090

140

100



Discharge rate Q

1500min–11800min

–1

PZ-4B-100

Input Lin

1800min–1

1500min–1


0 7 14 2171 143 214

406080

100120140

200

5040

300330

60708090

270

100



Discharge rate Q

1500min–11800min

–1

PZ-6B-180

Input Lin

1800min–1

1500min–1


0 7 14 2171 143 214

406080

100120140

200

5040

300330

60708090

270

100



Discharge rate Q

1200min–11500min

–1

PZ-6B-220

Input Lin

1500min–1

1200min–1


0 7 14 2171 143 214

20406080

100

0

5040

200220240

60708090

180

100



Discharge rate Q

1500min–1

1800min–1

PZ-5B-130

Input Lin

1800min–1

1500min–1


0 7 10.5 1471.4

3.535.3 107 143

20

30

10

0

50

657075

60708090

80

100



1500min–1

1800min–1

PZ-2B-45

Input Lin

Discharge rate Q 1800min–1

1500min–1


0 7 2171.4 214

14143

20304050

100

50

100110120

60708090

130

100



1500min–1

1800min–1

PZ-3B-70

Input Lin

1800min–1

1500min–1

Effi

cien

cy

η,ηv

%D

isch

arge

rat

e Q

r/m

in

Effi

cien

cy

η,ηv

%D

isch

arge

rat

e Q

r/m

in

Effi

cien

cy

η,ηv

%D

isch

arge

rat

e Q

r/m

in

Effi

cien

cy

η,ηv

%D

isch

arge

rat

e Q

r/m

in

Effi

cien

cy

η,ηv

%D

isch

arge

rat

e Q

r/m

in

Effi

cien

cy

η,ηv

%D

isch

arge

rat

e Q

r/m

in

Effi

cien

cy

η,ηv

%D

isch

arge

rat

e Q

r/m

in

Inpu

t Lin

kW

Inpu

t Lin

kW

Inpu

t Lin

kW

Inpu

t Lin

kW

Inpu

t Lin

kW

Inpu

t Lin

kW

Inpu

t Lin

kW


Input Curren−Discharge Rate Characteristics

General Performance


A

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PZ-2B-35E*A-1045

PZ-3/5B-*E*A-10



Part No. Part Name

1234567891011121314151617181920212223

BodyCaseShaftCylinder barrelValve platePistonShoeShoe holderBarrel holderSwash plateThrust bushSeal holderGasketSpring CSpring SControl pistonSleeveNeedleKeyNutRetainerPlugBall bearing

Part No. Part Name

2425262728293031323334353637383940414243444546

Needle bearingOil sealSnap ringSnap ringSnap ringO-ringO-ringO-ringO-ringBackup ringBackup ringPinScrewScrewScrewExpander plugNameplateCAUTION plateSpring holderGuideLubrication port plateConnectorO-ring

Part No. Part Name

1234567891011121314151617181920212223

BodyCaseShaftCylinder barrelValve platePistonShoeShoe holderBarrel holderSwash plateThrust plateSeal holderGasketSpring CSpring SControl pistonEnd plugGuide screwThrust bushSpring holderRetainerNeedleKey

Part No. Part Name

242526272829303233343637383940414243444546474849

PlugPinConnectorNutBall bearingNeedle bearingOil sealSnap ringSnap ringSnap ringO-ringO-ringO-ringO-ringO-ringBackup ringBoltScrewExpander plugExpander plugPinO-ringPlateScrew

*Not available through retail sources. Consult your agent for more informa-tion.

*Not available through retail sources. Consult your agent for more information.

Part No. Part NamePZ-3B PZ-5B

RemarksSize Q'ty Size Q'ty

13 Gasket * 1 * 1 3 Bond30 Oil seal TCN-456812 1 TCN-608212 1 N. O. K36 O-ring 1B-G95 1 1B-G125 1 JIS B 240137 O-ring 1B-P21 2 1B-P21 2 JIS B 240138 O-ring 1B-P12 1 1B-P16 1 JIS B 240139 O-ring 1B-P34 1 1B-P42 1 JIS B 240140 O-ring 1B-P7 2 1B-P7 2 JIS B 240141 Backup ring T2-P12 1 T2-P16 1 JIS B 2407

47 O-ring 1B-G90 1 1B-G85 1 JIS B 2401

Part No. Name Q'ty Size Remarks13 Gasket 1 * 3 Bond25 Oil seal 1 TCN-305011 N. O. K29 O-ring 1 1B-G70 JIS B 240130 O-ring 1 1B-P26 JIS B 240131 O-ring 1 1B-P21 JIS B 240132 O-ring 1 1B-P11 JIS B 240133 Backup ring 1 T2-P26 JIS B 240734 Backup ring 1 T2-P11 JIS B 240746 O-ring 2 1B-P5 JIS B 2401


A

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PZ-4/6B-*


Foot Mounting Kit

Piping Flange Kit

Part No. Part NamePZ-4B PZ-6B

RemarksSize Q'ty Size Q'ty

30 Oil seal TCN-507212 1 TCN-659013 1 N. O. K

34 O-ring 1B-G85 1 1B-G85 1 JIS B 2401

35 O-ring 1B-G105 1 1B-G135 1 JIS B 2401

36 O-ring 1B-G155 1 1B-G200 1 JIS B 2401

37 O-ring 1B-G50 1 1B-G60 1 JIS B 2401

38 O-ring 1B-P36 1 1B-P41 1 JIS B 2401

39 O-ring 1B-P16 1 1B-P16 1 JIS B 2401

40 O-ring 1B-P21 3 1B-P21 3 JIS B 2401

41 O-ring 1B-P9 1 1B-P10 1 JIS B 2401

42 O-ring 1B-P8 5 1B-P8 8 JIS B 2401

43 Backup ring T2-P16 1 T2-P16 1 JIS B 2407

Flange Kit model No.Applicable Pump

Model No.

IN Flange


IHF -4-T-20 PZ-2B-35/45 IH03J-100100 1 TH-10 × 55 4 WS-B-10 4 1B-G40 1

IHF -5-T-20 PZ-3B-70 IH03J-100120 1 TH-12 × 55 4 WS-B-12 4 1B-G50 1

PZF -4-T-10 PZ-4B-100 IH03J-100160 1 TH-12 × 60 4 WS-B-12 4 1B-G60 1

IHF -7-T-10 PZ-5B-130 IH03J-100200 1 TH-12 × 60 4 WS-B-12 4 1B-G75 1

PZF -6-T-10 PZ-6B-180/220 IH03J-100240 1 TH-16 × 75 4 WS-B-16 4 1B-G85 1

OUT FlangePlug


IH03J-100060 1 TH-10 × 50 4 WS-B-10 4 1B-G30 1 TPHA-1/4 1

IH03J-100080 1 TH-10 × 50 4 WS-B-10 4 1B-G35 1 TPHA-1/4 2

IH03J-100080 1 TH-10 × 50 4 WS-B-10 4 1B-G35 1 TPHA-1/4 1

IH03J-100120 1 TH-12 × 60 4 WS-B-12 4 1B-G50 1 TPHA-1/4 1

IH03J-100120 1 TH-12 × 60 4 WS-B-12 4 1B-G50 1 TPHA-1/4 1

Note 1. See page C-11 for dimensions.2. O-ring 1B/B-** refers to JIS B2401-1B.3. See page C-11 for details on tightening torque.

Part No. Part Name

313233343536373839404142434445464748495051525354

Snap ringSnap ringSnap ringO-ringO-ringO-ringO-ringO-ringO-ringO-ringO-ringO-ringBackup ringOrificeScrewPlugPinBoltPlugPlateWasherBoltEye boltElectro-hydraulic proportional valve

Part No. Part Name

123456789

101112131415161718192021222324252627282930

BodyCaseShaftCylinder barrelValve platePistonShoeShoe holderBarrel holderSwash plateThrust bushSeal holderSleeveSpring CSpring SControl pistonEnd plugGuide screwSpring holderThrust plateRetainerNeedleKeyPlugPinOrificeNutBall bearingNeedle bearingOil seal

Pump Model No. Mounting Model No.

PZ-2B IHM-44-10

PZ-3BPZ-5BPZ-6B

IHM-55-10

PZ-4B PZM-4-10

Note: See pages C-12 and A-34 for information about mounting methods.


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A-42

PZH SERIES HIGH PRESSURE TYPEVARIABLE DISPLACEMENT AXIAL PISTON PUMP

PZH Series High-Pressure Variable Volume Piston Pump

28,40cm3/rev41MPa

Features

Specifications

qqLong, trouble-free service life

Swash plate design ensures long,trouble-free bearing life.

wwLow-noise, even in thehigh pressure range

High-rigidity semi-cylindrical swashplate provides low-noise operation,

even in the high-pressure range.

eeFemale piston

Female piston increases sealingbetween the shoe and piston forenhanced resistance to contamina-tion.

rrHigh-precision proportion-al flow control

This load sensitive type pump pro-vides precision low flow rate controlfrom zero load.



ing the pump shaft to the driveshaft, and minimize radial or thrustload from being applied to thepump shaft.

xEccentricity between the drive shaftand pump shaft should be nogreater than 0.05mm, with surfacevibration n0.09 or less.

cMake sure the clamping length ofcouplings and the hydraulic pumpshaft is long enough to allow theentire length of key fits in the cou-pling width.


bMake the pump suction side pres-sure is at least −0.03MPa at peaktimes, and at least −0.01MPa nor-mally.

nRaise part of the drain piping so it isabove the topmost part of the pumpbody, and insert the return sectionof the drain piping into the hydraulicoperating fluid tank. In order toobtain a drain back pressure of0.2Mpa or less, the drain pipeshould have an inside diameter ofat least φ17 and should be less thanone meter long.


zUse only good-quality hydraulicoperating fluid with a kinematic vis-cosity during operation within therange of 20 to 200 mm2/sec. Normally, you should use an R&Otype and wear-resistant type of ISOVG46 or equivalent. The optimumkinematic viscosity during operation is20 to 50 mm2/sec.

xThe operating temperature range is 10to 80°C. When the oil temperature atstartup is 10°C or less, run the pump atlow pressure until the oil temperaturereaches 10°C.

cProvide a suction strainer with a fil-tering grade of about 100µm (150mesh). Provide a return line filter of grade20µm or less on the return line tothe tank. (When the pump is usedat a high pressure of 14 MPa orgreater, a filter of 10µm or less isrecommended.)

vManage the hydraulic operating fluidso that contamination is maintained atclass NAS9 or lower.

bUse the hydraulic operating fluidwhen the operating ambient tem-perature is in the range of −20 to20°C.

¡Startup PrecautionszBefore starting the pump, fill the

pump body with clean hydraulicoperating oil through the drain portor the air bleeder port. Be sure toperform the air bleed operationfrom the air bleeder port before andimmediately after running thepump.

xThis pump does not have a pressurecompensation mechanism (no full cut-off). Be sure to install a relief valve in thecircuit.

cCheck to make sure that the pumprotation direction is clockwise whenviewed from the end of the shaft.

vAir entering the pump or pipes cancause noise or vibration. At startup,set the pump discharge side to ano-load state, and operate thepump in the inching mode toremove any air that might be in thepump or pipes.

bTo enable proper flow control whenusing a proportional flow controlmodel, loosen the air vent of the elec-tro-hydraulic proportional control valveto bleed air from the valve immediate-ly after operation. You can change theposition of the air vent by looseningthe coil cover. When there is no inputcurrent to the valve, you can manuallycontrol the flow rate with the manualflow rate adjusting screw. Normally,the manual adjusting screw should bereturned completely to its originalposition and secured with the lock nut.

Model No.

Pump

Capacity

cm3/rev

Rated Voltage MPa

kgf/cm2

Maximum WorkingPressure

MPakgf/cm2

Revolution Speed min −1

Weight

kgMin. Max.

PZH-2B-28**5***-10 2834.3

350

41.0

418500 1900 28

PZH-2B-40**5***-10 4034.3

350

41.0

418500 1900 29


Pisto

n P

um

ps

A

A-43

Understanding Model NumbersStandard typeConstant horsepower control type (L)

Design number

Revolution speed A: 1500min–1, B: 1800min–1

Rated voltage 5: to 35.0MPa 357kgf/cm2

Constant horsepower 5: 5.5 kW, 7: 7.5kWaxial input 11: 11 kW, 15: 15.5kW

18: 18.5kW, 22: 22 kW30: 30 kW, 37: 37 kW

Control mechanism L: Constant horsepower control

Pump capacity 28: 28cm3/rev, 40: 40cm3/rev

Mounting method A: Foot type mounting B: Flange type mounting

PZH Series Variable Piston Pump

Pump size 2

PZH – – –2 B 28 L 5 A 10

Option typeElectro-hydraulic proportional control type (EF)


P-Q characteristics

Flo

w r

ate

/m

inr


P-Q characteristics

Flo

w r

ate

/m

inr

Input Current – Discharge Rate Characteristics

Proportional valve input current mA

Dis

char

ge r

ate

/m

inr


A

A-44

Pisto

n P

um

ps

PZH-2B-28EF5**-1040

Drain port

G3/4

Discharge port shape

Discharge port

Auxiliary View XSAEJ518b–3/4 (6000psi)

4-M10x18

44 29.8

15°

3.5

109 90138 (MAX)

8714

4

141.3 (MAX)F

23.8

50.8 φ19

+0.10

+0.

40

φφ

PZH-2B-28L5**-1040

(Suction, discharge port locations)

4-M12x21

Suction portSAEJ518b–11/2

Drain port (G3/4)Torque adjusting screw

Pump capacity adjusting screw

10

1.6h

8–0

.054

0

E D

9.7A

C B

102

F

G

103.2135195

103.

213

5

4 to 14.5

69.9 X

35.8

140.

5 (D

rain

por

t)

φ38

Key width6.375 –0.025

0

φ

φ

Drain port

G3/4

Discharge portSAEJ518b–3/4 (6000psi)

44 29.8+0.1

0

+0.

4015°

3.5

109 90

Auxiliary View X

141.3 (MAX) 165

151

φφ

Suction port configuration

4-M12x21

Suction portSAEJ518b–11/2

Torque adjusting screwPump capacity adjusting screw

Air vent


4-M10x18

Key width6.375 –0.025

0

–0.0

250

T port (Rc 1/4)

103.2135195

128

103.

213

514

0.5

(Dra

in p

ort)

9.7

A

X

CB

43 (Air bleeder port)

102 (Drain port)

19

D E 101

.6h6

H

J

G

I

K

50.8

23.8

30

18

4 to 14.5

69.9

35.8F

φ38

φ

φ

φ


Pump Model No. A B C D E F G

PZH-2B-28L5**-10 67 45 4 φ22.23 0−0.025 25.08 0−0.25 175 233

PZH-2B-40L5**-10 83 60 5 φ25.385 0−0.025 27.85 0−0.25 184.5 242.5

Dimension Table

Pump Model No. A B C D E F G H I J K

PZH-2B-28EF5**-10 67 45 4 φ22.23 0−0.025 25.08 0−0.25 175 263 202 300.5 144 16.5

PZH-2B-40EF5**-10 83 60 5 φ25.385 0−0.025 27.85 0−0.25 184.5 272.5 211.5 310 153.5 7

Dimension Table


A

A-45

Pisto

n P

um

ps

19.614.79.84.9 24.5 29.4 34.30

0

10

20

30

40

50

60

20015010050 250 300 350

Pressure MPa (kgf/cm2)

A22

A18

A15

A11

A7

A5

Flo

w r

ate

/m

in.

r


35030025020015010019.614.79.84.9 24.5 29.4 34.3

60

50

40

30

10

00

20

50

B22

B18

B15

B11B7

B5F

low

rat

e /

min

.r

Pressure MPa (kgf/cm2)350300250200150100

19.614.79.84.9 24.5 29.4 34.3

60

50

40

30

10

00

20

50

A22

A18A15

A11

A7A5

70

80

Flo

w r

ate

/m

in.

r

100 150 200 250 300 350


19.614.79.84.9 24.5 29.4 34.3

60

50

40

30

10

00

70

20

50

80

B22

B18

B15

B11

B7

B5

B37

B30

Flo

w r

ate

/m

in.

r

19.614.79.84.9 24.5 29.4 34.355

0

60

65

70

75

80

85

20015010050 250 300 350


1800min-1

1500min-1

Noi

se le

vel d

B(A

)


35030025020015010019.614.79.84.9 24.5 29.4 34.3

85

80

75

70

60

055

65

50

1800min-1

1500min-1

Noi

se le

vel d

B(A

)

Performance Curves Typical Characteristics at a Hydraulic Operating Fluid Kinematic Viscosity of 46 mm2/s

Load Pressure - Flow Rate Characteristics

PZH-2B-40

PZH-2B-28*5A**-10Revolution Speed :1500min−1

Symbol : A**

PZH-2B-28*5B**-10Revolution Speed :1800min−1

Symbol : B**

Noise CharacteristicsPZH-2B-28

PZH-2B-40*5A**-10Revolution Speed :1500min−1

Symbol : A**

PZH-2B-40*5B**-10Revolution Speed :1800min−1

Symbol : B**

Input (kW)PZH-2B-28 PZH-2B-40

4P-50Hz 4P-60Hz 4P-50Hz 4P-60Hz

5.5 A5 B5 A5 B5

7.5 A7 B7 A7 B7

11 A11 B11 A11 B11

15 A15 B15 A15 B15

18.5 A18 B18 A18 B18

22 A22 B22 A22 B22

30 − − − B30

37 − − − B37

Constant Horsepower Input and Symbols


A

A-46

Pisto

n P

um

ps


Foot Mounting Kit

List of Sealing PartsPart

No.Name Q'ty

Part Number

PZH-2B-28 PZH-2B-40

1 Oil seal 1 * *

2 O-ring 4 *

3 O-ring 1 *

4 O-ring 1 *

5 O-ring 2 *

6 O-ring 1 *

7 O-ring 1 *

8 O-ring 1 *

9 Backup ring 1 *

10 Backup ring 1 *

11 Backup ring 1 *

12 Packing 6 *

13 Packing 6 *

14 Packing 2 *

Kit Model No.Applicable Pump

Model No.

Accessories Dimensions (mm) Weight

kgBolt Q'ty Washer Q'ty I J

PZM-2-H-10PZH-2B-28

TB-12×35 4 WP-10 492.5 48

12.0PZH-2B-40 107.5 63

*These seal products are not available through retail channels. Fordetails, consult your agent.

PZH-2B-*** -10


Documents

Pasar Pneumatic Hydraulic · A A-2 Hydraulic Pumps Hydraulic Pump Selection Table Pump Type Name Type Classifi-cation Rated Pressure MPa {kgf/cm2} Displacement cm3/rev Page Variable