Industrial Hydraulics FAQs - Bosch Global · 6/20 Bosch Rexroth AG Hydraulics 4WRE; 4WREE RE 29061/10.05 Technical data (for applications outside these parameters, please consult

Industrial Hydraulics FAQs

Updated: JS_August2013

FAQ Title: What is “loop drop” and nominal flow rate in proportional and servo valves? Category: Proportional and Servo Valves Sub-Category: Proportional and Servo Valves

Bosch Rexroth Corporation Hydraulics 2315 City Line Road Bethlehem, PA 18017 Tel (847) 645-3600

Question: What is meant by total loop drop and nominal flow rate in proportional and servo valve selection and sizing?

Answer: The nominal flow rate found in the model code of a proportional or servo valve is determined by the flow through the valve at a set pressure drop with the valve shifted 100%. The pressure drop is TOTAL “loop drop” across the valve P to A AND B to T, or P to B AND A to T. Proportional valves (4WRA, 4WRE, 4WRZ, 4WRLE…) have a spool (with notches) in a housing configuration; while servo (4WS2EM) or servo-solenoid (4WRPEH) valves have a spool/sleeve configuration. Bosch Rexroth proportional valves are rated @ 10 bar (145 psi) total pressure drop or 5 bar per spool land. Bosch Rexroth servo valves are rated @ 70 bar (1015 psi) drop, or 35 bar per land. Particularly with proportional valves, a 10 bar drop is not sufficient for many applications, the “loop drop” is a reference value to measure flow capability, since proportional and servo valves are inherently throttles. (Please note, 10 bar is the Rexroth standard, review competitive data sheets, as 8 bar or other values may be used!) Improper calculation of deceleration pressure requirements may yield a valve “over-sized” and poor in control resolution. System pressure drop, max flow requirements, accel/decel forces/pressures and flow curves must be used to determine nominal flow rate and proper valve size.

Flow curves and data sheets are attached for 4WREE (proportional) and 4WS2EM 10 (Servo with spool/sleeve) as examples. Attachments: RE29061.pdf RE29583.pdf 4WS2EM 10 flow curve.pdf

Industrial Hydraulics FAQs

Updated: JS_August2013

4WREE 16 lpm flow curve.pdf Prop spool-housing.pdf Servo spool-sleeve.pdf

1/204/2 and 4/3 proportional directional valves direct operated, with electrical position feedback, without/with integrated electronics (OBE)

Types 4WRE and 4WREE

Nominal sizes 6 and 10Component series 2XMaximum operating pressure 315 barMaximum flow: 80 l/min (NS6) 180 l/min (NS10)

RE 29061/10.05Replaces: 02.03

Type 4WRE 6 …-2X/G24K4/V

with plug-in connectors and

associated control electronics

(separate order)

Type 4WREE 10 …-2X/G24K31/A1V

with integrated electronics (OBE)

H5732H5881

Overview of contents

Contents Page

Features 1

Ordering details 2

Symbols 3

Function, section 4

Technical data 5, 6

Control electronics 6

Electrical connections, plug-in connectors 7, 8

Integrated electronics (OBE) for type 4WREE 8, 9

Characteristic curves 10...15

Unit dimensions 16...19

Features

– Direct operated proportional directional valve with electrical posisiton feedback and integrated electronics (OBE) for type 4WREE

– Closed loop control of the direction and size of a flow

– Operation is by proportional solenoids with a central thread and removable coil

– For subplate mounting: Porting pattern to ISO 4401Subplates to catalogue sheets RE 45052 (NS6) or RE 45054 (NS10), separate order, see pages 16 ...19

– Spring centred control spool

– Control electronics• 4WREE - integrated electronics (OBE) with voltage input or current input (A1 resp. F1)

• 4WRE (4/3 version), separate order: - digital or analogue amplifier in Eurocard format - analogue module amplifier

• 4WRE…A (4/2 version), separate order: - analogue module amplifier

For information regarding the available spare parts see:www.boschrexroth.com/spc

P T

A B

a 0 b

A B

P T

a 0

2/20 Bosch Rexroth AG Hydraulics 4WRE; 4WREE RE 29061/10.05

Ordering details

Further details in clear text

Seal material

V = FKM seals, suitable for mineral oil

(HL, HLP) to DIN 51524

Electronic interfaces A1 or F1

For 4WREE

A1 = Command value input ± 10 VDCF1 = Command value input 4 to 20 mA

No code = For 4WRE

Electrical connections

For 4WRE:

K4 = Without plug-in connector, with component plug

to DIN EN 175301-803Plug-in connector (solenoid, position

transducer). separate order, see page 7

For 4WREE:

K31 = Without plug-in connector, with component plug to DIN EN 175201-804

Plug-in connector – separate order,see page 8

G24 = Power supply voltage 24 VDC

2X = Component series 20 to 29(20 to 29: unchanged installation and

connection dimensions)

Nominal flow at a valve pressure differential ∆p = 10 bar

NS6

08 = 8 l/min16 = 16 l/min32 = 32 l/min

NS10

25 = 25 l/min50 = 50 l/min

75 = 75 l/min

4WRE 2X G24 V *

Without integratedelectronics (OBE) = No code

With integrated

electronics (OBE) = E

Nominal size 6 = 6

Nominal size 10 = 10

Spool symbols

= E

E1–

= V

= W

W1–

= EA

= WA

With symbols E1and W1:

P → A: qV max B → T: qV/2

P → B: qV/2 A → T: qV max

Note:

For spools W and WA there is, in the neutral position, a connection between A to T and B to T with approx. 3 % of the relevant nominal cross-section.

G

A B

P T

a 0 ba b

G

A B

P T

a 0a b

G A B

P T

a 0 ba b

G A B

P T

a 0a b

Hydraulics Bosch Rexroth AGRE 29061/10.05 4WRE; 4WREE 3/20

Symbols

Proportional directional valves without integrated electronics

Type 4WRE…

Type 4WRE…A…

Proportional directional valves with integrated electronics

Type 4WREE…

Type 4WREE…A…

BA

a b

9 7 5 3 2 10 1 4 11 6

A T B(P)

9 7 5 3 2 1 4 11 6

A T B(P)

a b

P1 P2

X1 X2

X1

X2

P1 P2

8


Function, section

Type 4WRE 6…-2X/…

Type 4WREE 6…-2X/…

The 4/2 and 4/3 proportional directional valves are direct operated components of subplate mounting design. They are operated by proportional solenoids with central thread and removalbe coil. The solenoids are optionally controlled by either external electronics (type 4WRE) or by the integrated electronics (type 4WREE).

Design:

The valve basically consists of:

– Housing (1) with mounting face

– Control spool (2) with compression springs (3 and 4) and spring plates (X1 and X2)

– Solenoids (5 and 6) and pole tubes (P1 and P2) with central thread

– Position transducer (7)

– Optional integrated control electronics (8)

– The mechanical zero point adjustment (9) is accessible via the Pg13.5 and the electrical zero point is accessible via the Pg7 (10) (type 4WREE)

Function:

– With the solenoids (5 and 6), de-energised, the control spool (2) is held in the central position by the compression springs (3 and 4) between the spring plates (X1 and X2)

– Direct operation of the control spool (2) by energising one of the proportional solenoids, e.g. control of solenoid "b" (6)

→ Movement of the control spool (2) to the left in proportion to the electrical input signal

→ Connection from P to A and B to T via orifice-like cross- sections with progressive flow characteristics

– De-energising of solenoids (6)

→ The control spool (2) is returned to the central position via the compression spring (3)

In the de-energised condition the spool (2) is held in a mechanical centre position by the solenoid return springs. This, for the spool symbol "V", does not relate to the hydraulic centre position! When the electrical valve closed loop control circuit is closed then the spool is positioned in the hydraulic centre position.

Note for type 4WRE 6…-2X/…

Draining of the tank line is to be prevented. Taking the insallation conditions into account a back pressure is to be fitted (back pressure approx. 2 bar).

Valve with 2 switching positions: (type 4WRE…A…)

The function of this valve version is basically the same as that of the valve with 3 switched positions. The 2 switched position valves are however only fitted with solenoid "a" (5). a plug (11) is fitted in place on the 2nd proportional solenoid.


Technical data (for applications outside these parameters, please consult us!)

General

Nominal size NS 6 10

Installation optional, preferably horizontal

Storage temperature range °C –20 to +80

Ambient 4WRE °C –20 to +70

temperature range 4WREE °C –20 to +50

Weight 4WRE kg 2.2 6.3

4WREE kg 2.4 6.5

Hydraulic (measured with HLP46, ϑoil = 40 °C ± 5 °C and p =100 bar)

Max. operating pressure Ports A, B, P bar 315

Port T bar 210

Nominal flow qV nom at ∆p = 10 bar l/min 8, 16, 32 25, 50, 75

Max. permissible flow l/min 80 180

Pressure fluid Mineral oil (HL, HLP) to DIN 51524 other pressure fluids on request!

Pressure fluid temperature range °C –20 to +80 (preferably +40 to +50)

Viscosity range mm2/s 20 to 380 (preferably 30 to 46)

Max. permissible degree of pressure fluid contamination.Cleanliness class to ISO 4406 (c)

class 20/18/15 1)

Hysteresis % ≤ 0.1

Reversal span % ≤ 0.05

Response sensitivity % ≤ 0.05

Zero point displacement with changes to the %/10 K 0.15

pressure fluid temperature and operating temperature %/100 bar 0.1

1) The cleanliness class stated for the components must be adhered too in hydraulic systems. Effective filtration prevents faults from occurring and at the same time increases the component service life.For the selection of filters see catalogue sheets RE 50070, RE 50076, RE 50081, RE 50086 and RE 50088.


Technical data (for applications outside these parameters, please consult us!)

Electrical

Nominal size NS 6 10

Voltage type DC

Command value signal Voltage input „A1“ V ±10 (see page 8)

for 4WREE Current input „F1“ mA 4 bis 20 (see page 8)

Solenoid coil Cold value at 20 °C Ω 2.7 3.7

resistance Max. warm value Ω 4.05 5.55

Duty % 100

Max. coil temperature 1) °C 150

Electrical connections 4WRE with component plug DIN EN 175301-803 and ISO 4400

see pages 7 and 8 plug-in connector to DIN EN 175301-803 and ISO 4400 2)

4WREE with component plug DIN EN 175201-804

plug-in connector DIN EN 175201-804 2)

Valve protection to EN 60529 IP65 with mounted and fixed plug-in connector

1) Due to the occurring surface temperature of the solenoid coils, the European Standards EN 563 and EN 982 are to be taken into account!

2) Separate order

Note: For details regarding the environmental

simulation test covering EMC (electromagnetic compatibility), climate and mechanical loading see RE 29061-U (declaration regarding environmental compatibility).

Control electronics

For 4WRE 4/3 version

Amplifier in Eurocard format 2)

digital VT-VRPD-2-2X/V0/0 to RE 30126

analogue VT-VRPA2-1-1X/V0 to RE 30119

VT-VRPA2-2-1X/V0 to RE 30119

Modular amplifier 2) analogue VT-MRPA2-1 to RE 30219

VT-MRPA2-2 to RE 30219

For 4WRE…A… 4/2 version

Modular amplifier 2) analogue VT-MRPA1-1 to RE 30219

VT-MRPA1-2 to RE 30219

For 4WREE integrated in the valve, see page 9

Analogue command value module VT- SWMA-1-1X/... to RE 29902

Analogue command value module VT-SWMKA-1-1X/... to RE 29903

Analogue command value card VT-SWKA-1-1X/... to RE 30255

Digital command value card VT-HACD -1-1X/... to RE 30143

Supply voltage Nominal voltage VDC 24

Lower limiting value V 19.4

Upper limiting value V 35

Amplifier power Imax A < 2

consumption Impulse current A 3

PE

1 2

PE

1 2

PE

1 2

PE

1 2

37

Ø 1

5

Pg7

23

7,8

16

2 14 3

4 21 3

27,5

18

43 10

34,2

5,5

1

1

210A250V

GD

M


Electrical connections, plug-in connectors (nominal dimensions in mm)

For type 4WRE (without integrated electronics)

Plug-in connector CECC 75 301-803-A002FA-H3D08-G to DIN EN 175301-803 and ISO 4400

Solenoid a, colour greySeparate order under Material No. R901017010

Solenoid b, colour blackSeparate order under Material No. R901017011

To the amplifier To the amplifier

Connections on the component plug Connections on the plug-in connector

Plug-in connector 4-pin Pg7-G4W1F

Separate order under Material No. R900023126

Connection cable:

Recommended: Up to 50 m cable length type LiYCY 4 x 0.25 mm2

Only connect screen to PE on the supply side.

Inductive position transducer

Coil connections

To t

he a

mp

lifie

r

Signal ground

SupplySignal

Connection to the plug connector

Supply ground

To the amplifier

Coil

1 fixing screw M3Tightening torque MA = 0,5 Nm

AF

ED

C

B

Ø6,5

…11

Ø27

91

Ø8…

Ø13,5

85


Integrated electronics (OBE) for type 4WREE (nominal dimensions in mm)

For type 4WREE (with integrated electronics (OBE)

Plug-in connector to DIN EN 175201-804Separate order under Material No. R900021267 (plastic version)

Angled form – separate order under Material No. R9000217845

Fo pin allocation also see block circuit diagram, page 9

Plug-in connector to DIN EN 175201-804Separate order under Material No. R900223890 (metal version)

Component plug allocation Contact Interface A1 signal Interface F1 signal

Supply voltage A 24 VDC (u(t) = 19.4 to 35 V); Imax = 2 A

B 0 V

Reference potential actual value C ref. contact F; Re > 50 kΩ ref. contact F; Re < 10 Ω

Differential amplifier input D ± 10 V command value; Re > 50 kΩ 4 to 20 mA command value; Re > 100 Ω

E reference potentional command value

Measurement output (actual value) F ± 10 V actual value (limiting load 5 mA)

4 to 20 mA actual value, load resistance max. 300 Ω

PE connected with cooling body and valve housing

Command value: A positive command value 0 to +10 V (or 12 to 20 mA) at D and the reference potential at E results in a flow from P to A and B to T. A negative command value 0 to –10 V (or 12 to 4 mA) at D and the reference potential at E results in a flow from P to B and A to T.

For a valve with 1 solenoid on side a (e.g. spool variants EA and WA) a positive command value 0 to +10 V (or 4 to 20 mA) at D and the reference po ten ti al at E results in a flow from P to B and A to T.

Actual value: Actual value 0 to +10 V resp. 12 to 20 mA at F and the reference potential at C results in flow from P to A and B to T, 0 to –10 V resp. 4 to 12 mA results in flow from P to B and A to T. For a valve with 1 solenoid results 4 to 20 mA at F and the reference potential at C results in flow from P to A and B to T.

Connection cable: Recommended: – up to 25 m cable length type LiYCY 7 x 0.75 mm2

– up to 50 m cable length type LiYCY 7 x 1.0 mm2

For outside diameter see plug-in connector sketch

Only connect screen to PE on the supply line.

UU

UU

UI

UI

=≈

=≈

D

E

F

C

A

B

PE

UU

+ Ui

– Ui0 V

WREE 6 W1-08-20/G24K31/A1V0000003A035276

FA

B

CED

Zero

00929812

B

P T

A

a 0 bba G

2154557301

2)3)

E

FA

B

CD

±10V/4...20 mA actual position

+ 24V

0V

Reference actual position

±10V/4...20 mA signal input

Reference input


Block circuit diagram / connection allocation

Interface Integrated electronics (OBE) Valve

Integrated electronics (OBE) for type 4WREE

Build year, build week + country identification

DifferentialamplifierCommand value

Ref. po ten ti alRamp generator 2)

Actual value Actual value

Protectiveconductor 1)

Supply

voltageDemodulator

OscillatorPower supply

Position transducerZero point 3)Sensitivity

Controller

Note: Electrical signals processed by control electronics (e.g. actual value) must not be used for switching off safety

relevant machine functions!

(Also see the European Standard "Safety requirements of fluid power systems and components – hydraulics“,

EN 982!)

1) The protective conductor (PE) is connected to the cooling body and the valve housing!

2) The ramp is externally adjustable from 0 to 2.5 s; the same applies for Tup and Tdown

3) Zero point is externally adjustable

Under voltagerecognition

Interlock

24 V

GND

Ref. po ten ti al

Valve type

Consecutive valve number within the manufacturing order

Material No.

Internal manufacturing order No.

Symbol

1

2

0 50 100 150 200 250 300 315210

100

80

60

40

20

– 20

– 40

– 60

– 80

– 100

– 5 – 3 – 1 1 3 5

100

80

60

40

20

– 20

– 40

– 60

– 80

– 100

– 5 – 3 – 1 1 3 5

1

2

0 50 100 150 200 250 300 315210


Characteristic curves for type 4WREE (measured with HLP46, ϑoil = 40 °C ± 5 °C) NS6 and 10

Pressure-signal-characteristic curves (V spool), ps = 100 bar

NS6

← in % →UE

UEN

Leaka

ge f

low

in l/

min

→

Operating pressure in bar → Operating pressure in bar →

Type 4WREE 10 V75Type 4WREE 6 V32

Leaka

ge f

low

in l/

min

→

∆p

L

pS

←

in %

→

Leakage flow with the spool in the central position

NS10

← in % →UE

UEN

∆p

L

pS

←

in %

→

30

20

10

0 10 20 30 40 50 60 70 80 90 100

40

50

60

4

3

2

1

5

70

80

90

100

110

120

30

20

10

0 10 20 30 40 50 60 70 80 90 100

432

1

5

30

20

10

0 10 20 30 40 50 60 70 80 90 100

40

50

60

4

3

2

1

5

15 20 30 40 50 60 70 80 90 100

15 20 30 40 50 60 70 80 90 100

15 20 30 40 50 60 70 80 90 100


Characterisitc curves for type 4WREE (measured with HLP46, ϑoil = 40 °C ± 5 °C and p =100 bar) NS6Flo

w in

l/m

in →

Command value in % →

Flo

w in

l/m

in →

Flo

w in

l/m

in →

8 l/min nominal flow at a 10 bar valve pressure differential

Max. permissible fl owNote:Take the performance limits on page 15 into account!

1 ∆p = 10 bar constant





∆p = Valve pressure differential (inlet pressure

pP minus load pressure pL minus return

pressure pT)

V spool

E and W spools



P → A / B → T

or

P → B / A → T

P → A / B → T

or

P → B / A → T

P → A / B → T

or

P → B / A → T

V spool

E and W spools

V spool

E and W spools













75

50

25

0 10 20 30 40 50 60 70 80 90 100

100

125

150

4

3

2

1

5

175

200

225

250

275

300

180

75

50

25

0 10 20 30 40 50 60 70 80 90 100

100

125

150

4

3

2

1

5

30

20

10

0 10 20 30 40 50 60 70 80 90 100

40

50

80

4

3

2

1

5

60

70

10 20 30 40 50 60 70 80 90 100

10 20 30 40 50 60 70 80 90 100

10 20 30 40 50 60 70 80 90 100


Charateristic curves for type 4WREE (measured with HLP46, ϑoil = 40 °C ± 5 °C and p = 100 bar) NS10

Flo

w in

l/m

in →


Flo

w in

l/m

in →

Flo

w in

l/m

in →


Max. permissible fl owNote:Take the performance limits on page 15 into account!

∆p = Valve pressure differential (inlet

pressure pP minus load pressure pL

minus return pressure pT)

V spool

E and W spools



P → A / B → T

or

P → B / A → T

P → A / B → T

or

P → B / A → T

P → A / B → T

or

P → B / A → T

V spool

E and W spools

V spool

E and W spools


















0 10 20 30

0 – 100 – 0

0 – 75 – 0

0 – 50 – 0

0 – 25 – 0

0 10 20 30 40

10

20

30

40

50

60

70

80

90

100

–30

–25

–20

–15

–10

–5

0

5

1 10 100 20020 30 50

–3

–315

–270

–225

–180

–135

–90

–45

0


Frequency response characteristic curves for type 4WREE (measured with HLP46, ϑoil = 40 °C ± 5 °C, ps = 10 bar) NS6

Phase

ang

le in

° →

Signal ± 10 %

Signal ± 25 %

Signal ± 100 %

Am

plit

ud

e r

ela

tionsh

ip in

dB

→

Frequency in Hz →

Str

oke

in %

→

Signal change in %

Transient function with a stepped form of electrical input signal for type 4WREE NS6

(measured with HLP46, ϑoil = 40 °C ± 5 °C and ps =10 bar)

Time in ms →

4/3 valve version

Spool symbol „E“

4/3 valve version

Spool symbol „V“

0

25

50

75

100

20 40 60 20 40 60

0 – 25 – 0

0 – 50 – 0

0 – 75 – 0

0 – 100 – 0

0

–30

–25

–20

–15

–10

–5

0

5

1 10 100

–315

–270

–225

–180

–135

0

20020 30 50

–3

–45

–90


Transient function with a stepped form of electrical input signal for type 4WREE NS10

(measured with HLP46, ϑoil = 40 °C ± 5 °C and ps =10 bar)

4/3 valve version

Spool symbol „E“

4/3 valve version


Phase

ang

le in

° →

Signal ± 10 %

Signal ± 25 %

Signal ± 100 %

Am

plit

ud

e r

ela

tionsh

ip in

dB

→

Frequency in Hz →

Str

oke

in %

→

Signal change in %

Time in ms →

Frequency response characteristic curves for type 4WREE (measured with HLP46, ϑoil = 40 °C ± 5 °C, ps = 10 bar) NS10

1

10

100

10 20 50 100 200

200

300

80

08

16

32

10

100

10 10020 50 200 300

25

50

400

25

180

qV

max ≈ 375l/min

50

75


Flow for type 4WREE (measured with HLP46, ϑoil = 40 °C ± 5 °C) NS10

Flow for type 4WREE (measured with HLP46, ϑoil = 40 °C ± 5 °C) NS6

Load function with maximum valve opening

Nominal flows 25, 50 and 75 l/min


Max. permissible

flow

Take the maximum permissible flow of 80 l/min into account!

Take the maximum permissible flow of 180 l/min into account!

Load function with maximum valve opening

Nominal flows 8, 16 and 32 l/min


Max. permissible

flowFlo

w in

l/m

in

→

Valve pressure differential in bar →

P → A / B → T

or

P → B / A → T

P → A / B → T

or

P → B / A → T

Flo

w in

l/m

in

→

Valve pressure differential in bar →

qVmax = 375 l/min

23

47

85,5

15

44

9

139

203

262

13,5

69 8,5

5104

78

6

a b42

11

47

72

8

15

T

P

AF4 F3

B

F1 F2

12 3

(123)

A B

G

0,01/100mm

Rzmax 4


Unit dimensions: type 4WRE 6 (nominal dimensions in mm) NS6

Required surface finish of the valve mounting surface

1 Valve housing

2 Proportional solenoid "a" with inductive position transducer

3 Proportional solenoid "b"

4 Plug-in connector "A", colour grey, separate order – see page 7

5 Plug-in connector "B", colour black, separate order – see page 7

6 Plug-in connector for inductive position transducer, separate order – see page 7

7 Plug for valves with one solenoid(2 switching positions, versions EA or WA)

8 Identical seal rings for ports A, B, P and T

9 Space required to remove the plug-in connector

10 Name plate

11 Machined valve mounting surface,connection location to ISO 4401 (with locating pin hole) Code: 4401-03-02-0-94 (explanation to ISO 5783)Deviation from the standard:- without locating pin hole „G“- ports P, A, B and T mit Ø8 mm

Subplates to catalogue sheet RE 45052 and valve fixing screws must be ordered separately.

Subplates: G341/01 (G1/4) G342/01 (G3/8) G502/01 (G1/2)

Valve fixing screws (separate order)The following valve fixing screws are recommended:

– 4 S.H.C.S. ISO 4762 - M5 x 50 - 10.9-flZn-240h-L

(friction value µtotal = 0.09 to 0.14)Tightening torque MA = 7 Nm ± 10% Material No. R913000064 (separate order)

or

– 4 S.H.C.S. ISO 4762 - M5 x 50 - 10.9

(friction value µtotal = 0.12 to 0.17)Tightening torque MA = 8.9 Nm ± 10%

Tolerances to: – General tolerances ISO 2768-mK

A

P

T

B

44

23

47

113,5

13 122 10 1

3

(123)

8,513,5

69

203

262

139

a b42

11

8

7

15

47

72

8

T

P

AF4 F3

B

F1 F2

G

0,01/100mm

Rzmax 4


1 Valve housing




8 Identical seal rings for ports A, B, P and T

10 Name plate

11 Machined valve mounting surface,connection location to ISO 4401 (with locating pin hole) Code: 4401-03-02-0-94 (explanation to ISO 5783)Deviation from the standard:- without locating pin hole „G“- ports P, A, B and T mit Ø8 mm

12 Integrated electronics (OBE)

13 Plug-in connector,separate order – see page 8

Unit dimensions: type 4WREE 6 (nominal dimensions in mm) NS6





– 4 S.H.C.S. ISO 4762 - M5 x 50 - 10.9-flZn-240h-L

(friction value µtotal = 0.09 to 0.14)Tightening torque MA = 7 Nm ± 10% Material No. R913000064 (separate order)

or

– 4 S.H.C.S. ISO 4762 - M5 x 50 - 10.9

(friction value µtotal = 0.12 to 0.17)Tightening torque MA = 8.9 Nm ± 10%


113,5

15

70

9

B

(180,5)

1292

269,5

365

a b

40 7

2,5

51046

19

32

78

1

30

11

94

20

72

13

F1 F2

BA

T1T

F3F4

P

184,5

32,5

±0,2

50,8±0,2

A

0,01/100mm

Rzmax 4


1 Valve housing



4 Plug-in connector "A", colour grey, separate order – see page 7

5 Plug-in connector "B", colour black, separate order – see page 7

6 Plug-in connector for position transducer, separate order – see page 7


8 Identical seal rings for ports A, B, P, T and T1

9 Space required to remove the plug-in connector

10 Name plate

11 Machined valve mounting surface,connection location to ISO 4401 (with locating pin hole) Code: 4401-05-04-0-94 (explanation toISO 5783)Deviation from the standard: Port T1 Ø11.2 mm

Unit dimensions: type 4WRE 10 (nominal dimensions in mm) NS10




– 4 S.C.H.S. ISO 4762 - M6 x 40 - 10.9-flZn-240h-L

(friction value µtotal = 0.09 to 0.14)Tightening torque MA = 12.5 Nm ± 10%, Material No. R913000058 (separate order)

or

– 4 S.C.H.S. ISO 4762 - M6 x 40 - 10.9

(friction value µtotal = 0.12 to 0.17)Tightening torque MA = 15,5 Nm ± 10%



70

1954

A P BT1T Ø

64

92

269,5

365

a b

40 7

2,5

12

19

10

139

13

30

11

2 1

8

7 3

(180,5)

12

184,5

94

20

72

13

F1 F2

BA

T1T

F3F4

P

32,5

±0,2

50,8±0,2

0,01/100mm

Rzmax 4


Unit dimensions: type 4WREE 10 (nominal dimensions in mm) NS10

1 Valve housing




8 Identical seal rings for ports A, B, P, T and T1

10 Name plate

11 Machined valve mounting surface,connection location to ISO 4401 (with locating pin hole) Code: 4401-05-04-0-94 (explanation to ISO 5783)Deviation from the standard: Port T1 Ø11.2 mm

12 Integrated electronics (OBE)

13 Plug-in connector,separate order – see page 8




– 4 S.C.H.S. ISO 4762 - M6 x 40 - 10.9-flZn-240h-L

(friction value µtotal = 0.09 to 0.14)Tightening torque MA = 12.5 Nm ± 10%, Material No. R913000058 (separate order)

or

– 4 S.C.H.S. ISO 4762 - M6 x 40 - 10.9

(friction value µtotal = 0.12 to 0.17)Tightening torque MA = 15,5 Nm ± 10%



Bosch Rexroth AG

Hydraulics

Zum Eisengießer 1

97816 Lohr am Main, Germany

Telefon +49 (0) 93 52 / 18-0

Telefax +49 (0) 93 52 / 18-23 58

[email protected]

www.boschrexroth.de

© This document, as well as the data, specifications and other informations

set forth in it, are the exclusive property of Bosch Rexroth AG. Without their

consent it may not be reproduced or given to third parties.

The data specified above only serves to describe the product. No statements

concerning a certain condition or suitability for a certain application can be

derived from our information. The details stated do not release you from the

responsibility for carrying out your own assessment and verification. It must

be remembered that our products are subject to a natural process of wear

and ageing.

20/20 Bosch Rexroth AG Hydraulics 4WREA; 4 WREE RE 29061/10.05

Notes

Type 4WSE2ED 10-5X/...B...K31EV Type 4WS2EM 10-5X/...B...K31EV

1/20Directional servo-valve in 4-way design

Type 4WS.2E...

Size 10 Component series 5XMaximum operating pressure 315 barMaximum flow 180 l/min

RE 29583/05.11Replaces: 07.03

Table of contents

HAD5893HAD5892

Contents PageFeatures 1Ordering code 2Symbols 3Function, section 4, 5Technical data 6, 7Available accessories 7Electrical connection 7, 8Characteristic curves 9 to 15Unit dimensions 16 to 18Flushing plate with porting pattern 19

Features– Valve to control position, force, pressure or velocity – 2-stage servo valve with mechanical or mechanical and elec-

tric return– 1st stage as nozzle flapper plate amplifier– Subplate mounting:

Porting pattern according to ISO 4401– Dry control motor, no pollution of the solenoid gaps by the

hydraulic fluid– Can also be used as 3-way version– Wear-free control spool return element– Control •ExternalcontrolelectronicsinEurocardformatorinmodu- lar design (separate order), see page 8 •Orcontrolelectronicsintegratedinthevalve(OBE)

– Valve and integrated control electronics are adjusted and tested– Control spool with flow force compensation– Control sleeve centrically fixed; thus low susceptibility to

temperature and pressure– Pressure chambers at the control sleeve with gap seal, no

wear of the seal ring– Filter for 1st stage externally accessible, see pages 16, 17

and 18

Information on available spare parts: www.boschrexroth.com/spc

InhaltTable of contents 1Features 1Ordering code 2Symbols 3Function, section 4Section 5Technical data (For applications outside these parameters, please consult us!) 6Technical Data (For applications outside these parameters, please consult us!) 7Available accessories 7Electrical connection, external control electronics 7Electrical connection, integrated control electronics 8Electrical connection, mating connector 8Characteristic curves (measured with HLP 32, ϑoil = 40 °C ± 5 °C) 9Characteristic curves: Type 4WS.2EM 10 and 4WSE2ED 10 (measured with HLP 32, ϑoil = 40 °C ± 5 °C) 10Characteristic curves: Type 4WS.2EM 10 and 4WSE2ED 10 (measured with HLP 32, ϑoil = 40 °C ± 5 °C) 11Characteristic curves: Type 4WS.2EM 10 and 4WSE2ED 10 (measured with HLP 32, ϑoil = 40 °C ± 5 °C) 12Characteristic curves: Type 4WS.2EM 10 and 4WSE2ED 10 (measured with HLP 32, ϑoil = 40 °C ± 5 °C) 13Characteristic curves: Type 4WS.2EM 10 and 4WSE2ED 10 (measured with HLP 32, ϑoil = 40 °C ± 5 °C) 14Characteristic curves: Type 4WS.2EM 10 and 4WSE2ED 10 (measured with HLP 32, ϑoil = 40 °C ± 5 °C) 15Unit dimensions: Type 4WS2EM 10 (dimensions in mm) 16Unit dimensions: Type 4WSE2EM 10 (dimensions in mm) 17Unit dimensions: Type 4WSE2ED 10 (dimensions in mm) 18Flushing plate with porting pattern according to ISO 4401-05-05-0-05 (dimensions in mm) 19Notes 20

2/20 Bosch Rexroth AG Hydraulics 4WS.2E... RE 29583/05.11

Ordering code

Directional servo-valve in 4-way design for external control electronics = 4WS2Ewith integrated control electronics = 4WSE2E

Mechanical return = MMechanical and electric return = D (only available with integrated electronics)Size 10 = 10Component series 50 to 59 = 5X (50 to 59: Unchanged installation and connec-tion dimensions)Rated flow 1)

withvalvepressuredifferentialΔp = 70 bar 5 l/min = 510 l/min = 1020 l/min = 2030 l/min = 3045 l/min = 4560 l/min = 6075 l/min = 7590 l/min = 90

Further details in the plain text 7)

V = FKM seals 6) suitable for mineral oil (HL, HLP)

according to DIN 51524Spool overlap 5)

E = 0 to 0.5 % negativeElectrical connection

K31 = Without mating connector with connector according to EN 175201-804

Mating connector - separate order see page 7

Inlet pressure range 4)

210 = 10 to 210 bar 315 = 10 to 315 bar

Pilot oil supply and return 3)

– = Supply external, return external E = Supply internal, return externalT = Supply external, return internalET = Supply internal, return internal

Valves for external control electronics: 2) 11 = Coilno.11(30mA/85Ωpercoil)

Valves with integrated control electronics:Command

valueActual value

(only available with 4WSE2ED…)9 = ±10 V ±10 V13 = ±10 mA ±10 mA

10 5X B K31 E V *

Rated flow 1)

The rated flow refers to a 100 % command value signal at 70 bar valve pressure differential (35 bar per control edge). The valve pressure differential must be regarded as refer-ence. Other values result in the flow being changed.A possible rated flow tolerance of ±10 % must be taken into account (see flow signal function page 9).

Electrical control data 2)

Valves for external control electronics: The actuating signal must be formed by a current-controlled output stage. Servo amplifier see page 7.Valves with integrated control electronics: With the integrated electronics, the command value can be fed in as voltage (ordering code "9") or - with larger distanc-es (> 25 m between control and valve) as current (ordering code "13").

Pilot oil 3)

Care should be taken that the pilot pressure is as constant as possible. An external pilot control via port X is thus often ad-vantageous. The valve can be operated with a higher pres-sure at X than at P in order to influence the dynamics in a positive form.The ports X and Y are also pressurized in case of "Internal" pilot oil supply.

Inlet pressure range 4)

Care should be taken that the system pressure is as constant as possible.Pilot pressure range: 10 to 210 bar or 10 to 315 barWith regard to the dynamics, the frequency response de-pendency must be observed within the admissible pres-sure range.

Spool overlap 5)

The spool overlap in % refers to the nominal stroke of the control spool.Other control spool overlaps upon request!

Seal material 6)

If you need any other sealing material, please contact us!

Details in the plain text 7)

Here, special requests are to be specified in the plain text. Af-ter receipt of the order, they are checked by the plant and the type designation is amended with a related number.

Hydraulics Bosch Rexroth AGRE 29583/05.11 4WS.2E... 3/20

SymbolsValves with electric and mechanical return, with OBE

(example: 4WSE2ED 10-5X…ET…)

A B

P T

a, b

G

U

Valves with mechanical return, without OBE (example: 4WS2EM 10-5X…ET…)

A B

P T

a, b

TA

A

P

B

TB

6

3

2

4

5

1

9

7

8


Function, section4WS(E)2EM10-5X/...Valves of type 4WS(E)2EM10-5X/... are electrically operated, 2-stage directional servo-valves. They are mainly used to control position, force and velocity.These valves consist of an electro-mechanical converter (torque motor) (1), a hydraulic amplifier (nozzle flapper plate principle) (2) and a control spool (3) in a sleeve (2nd stage), which is connected to the torque motor via a mechanical return.An electrical input signal at the coils (4) of the torque motor generates a force by means of a permanent magnet which acts on the armature (5), and in connection with a torque tube (6) results in a torque. This causes the flapper plate (7) which is connected to the torque tube (6) via a pin to move from the central position between the two control nozzles (8), and a pressure differential is created across the front faces of the control spool. This pressure differential results in the con-trol spool changing its position, which results in the pressure port being connected to one actuator port and, at the same time, the other actuator port being connected to the return flow port.The control spool is connected to the flapper plate or the torque motor by means of a bending spring (mechanical re-turn) (9). The position of the control spool is changed until the feedback torque across the bending spring and the electro-magnetic torque of the torque motor are balanced and the pressure differential at the nozzle flapper plate system be-comes zero.The stroke of the control spool and consequently the flow of the servo valve are controlled in proportion to the electrical input signal. It must be noted that the flow depends on the valve pressure drop.

External control electronics, type 4WS2EM10-5X/... (separate order)External control electronics (servo amplifier) serve the actua-tion of the valve, amplifying an analog input signal (command value) so that with the output signal, the servo valve is actu-ated in a flow-controlled form.Integrated control electronics, type 4WSE2EM10-5X/... and 4WSE2ED10-5X/...To amplify the analog input signal, control electronics (10) espe-cially adjusted to this valve type are integrated. They are located in the torque motor cover cap. The valve zero point can be ad-justed by means of an externally accessible potentiometer.4WSE2ED10-5X/...In addition to the mechanical control by the return spring, valves of this types are equipped with the electric spool posi-tion detection and control. The control spool position is deter-mined by an inductive position transducer (11). The position transducer signal is compared to the command value by inte-grated control electronics (10). Any possible control deviation is amplified electrically and fed to the torque motor as control signal. With the additional electric return, higher dynamical values can be achieved by the electric controller gain in the small signal range than with the purely mechanical version. The additionally available mechanical return ensures that in case the electric voltage supply fails, the valve spool is posi-tioned in the zero range.The valve is only available with integrated control electronics. The valve zero point can be adjusted by means of an exter-nally accessible potentiometer.Note: Changes in the zero point may result in damage to the sys-tem and may only be implemented by instructed specialists.

Type 4WS2EM10...

10

TA

A

P

B

TB

11

10

TA

A

P

B

TB


Section

Type 4WSE2EM10...

Type 4WSE2ED10...


Technical data (For applications outside these parameters, please consult us!)generalWeight with mechanical return kg 3.56

with mechanical and electric return and inte-grated control electronics

kg 3.65

Installation position Optional, if it is ensured that during start-up of the system the pilotcontrolissuppliedwithsufficientpressure(≥10bar).

Storage temperature range °C –20 to +80Ambient temperature range °C –20 to +60 valve with OBE

–30 to +100 valve without OBE

hydraulic (measured with HLP 32, ϑoil = 40 °C ± 5 °C)Operating pressure

Pilot control stage, pilot oil supply bar 10 to 210 or 10 to 315Main valve, port P, A, B bar Up to 315

Return flow pressure

Port TPilot oil return internal bar Pressure peaks < 100 permitted, static < 10Pilot oil return external bar Up to 315

Port Y bar Pressure peaks < 100 permitted, static < 10 Hydraulic fluid See table page 7Hydraulic fluid temperature range °C –15 to +80, preferably +40 to +50Viscosity range mm2/s 15 to 380, preferably 30 to 45Maximum admissible degree of contamination of the hydrau-lic fluid cleanliness class according to ISO 4406 (c)

Class 18/16/13 1)

Zero flow QV,L 2) measured without dither signal l/min pP 4) l

70 bar min•0.7pP 4) l70 bar min•0.9

pP 4) l70 bar min•1.2



Rated flow Qv rated 3), tolerance ±10 %

with valve differential pressure ∆p = 70 bar l/min 5 10 20 30 45 60 75 90Maximum control spool stroke possible with mechanical end position (in case of error) related to nominal stroke % 120 to 170 120 to 150Pressure gain with 1 % spool stroke change (from the hydraulic zero point)

% of pP 4)

≥ 30 ≥ 60 ≥ 80Return system Mechanical "M" Mechanical and

electric "D"Hysteresis (dither-optimized) % ≤1.5 ≤0.8Range of inversion (dither-optimized) % ≤0.3 ≤0.2Response sensitivity (dither-optimized) % ≤0.2 ≤0.1Zero adjustment flow over the entire operating pressure range % ≤ 3, long-term ≤ 5 ≤ 2Zero shift upon change of: Hydraulic fluid temperature % / 20 °C ≤ 1 ≤ 2 Ambient temperature % / 20 °C ≤ 1 ≤ 2 Operating pressure 80 to 120 % of pP

4) % / 100 bar ≤ 2 ≤ 2 Return flow pressure 0 to 10 % pP

4) % / bar ≤ 1 ≤ 1

1) The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration pre-vents faults and at the same time increases the service life of the components.

For the selection of the filters see www.boschrexroth.com/filter

2) QV, L = Zero flow in l/min3) QV rated = Rated flow (complete valve) in l/min4) pP = Operating pressure in bar

A

C

B

D

E

F

PE


Technical Data (For applications outside these parameters, please consult us!)

electricReturn system Mechanical "M" Mechanical and electric "D"Protection class of the valve according to EN 60529 IP 65 with mating connector mounted and lockedType of signal AnalogRated current per coil mA 30Resistance per coil Ω 85

Inductivity with 60 Hz and 100 % rated current

Connection in series H 1.0Connection in parallel H 0.25

In case of actuation using non-Rexroth amplifiers, we recommend a superimposed dither signal

electric, external control electronics (only version "M")Amplifier (separate order)

Eurocard format Analog Type VT-SR2-1X/... according to data sheet 29980Modular design Analog Type VT 11021 according to data sheet 29743

Important: Information on the environment simulation testing for the areas EMC (electromagnetic compatibility), climate and mechanical load see data sheet 29583-U (declaration on environmental compatibility).

Electrical connection, external control electronics

Coil A

Coil B

The electrical connection can be designed as parallel or serial connection. For reasons of operational safety and the resulting lower coil inductivity, we recommend the connection in parallel.The E-F bridge can be used for the electrical determination of the correct connection of the plug-in connector and/or for the identification of cable break.Connection in parallel: In the mating connector, connect contact A with B and C with D.Connection in series: In the mating connector, connect contact B with C.Electrical control from A (+) to D (–) results in the flow direction P to A and B to T. Inverted electrical control results in the flow direction P to B and A to T.E→F=bridge

Type 4WS2EM 10-5X...

Available accessories

Service case with test device for continuous valves with integrated electronics type VT-VETSY-1 according to data sheet 29685.

Service case with test device for servo valves for ex-ternal electronics type VT-SVTSY-1 according to data sheet 29681.

Hydraulic fluid Classification Suitable sealing materials StandardsMineral oils and related hydrocarbons HL, HLP NBR, FKM DIN 51524Flame-resistant – Water-containing HFC NBR ISO 12922

Important information on hydraulic fluids!– For more information and data on the use of other hydrau-

lic fluids refer to data sheet 90220 or contact us!– There may be limitations regarding the technical valve

data (temperature, pressure range, service life, mainte-nance intervals, etc.)!

– The flash point of the process and operating medium used must be 40 K higher than the maximum solenoid sur-face temperature.

– Flame-resistant – water-containing: Maximum pressure difference per control edge 175 bar, otherwise, increased cavitation erosion! Tank pre-loading < 1 bar or > 20 % of the pressure differ-ence. The pressure peaks should not exceed the maxi-mum operating pressures!

A

B

C

D

E

F

PE

Re

A

B

C

D

E

F

PE

Re

Ri

AB

CD

E

F

Ø8

…Ø

13

,5

85

Electrical connection, mating connectorMating connector according to DIN EN 175.201-804 separate order under Material no. R900223890 (metal version)


Electrical connection, integrated control electronicsType 4WSE2EM 10-5X...

Zero point setting

Dither signal

Type 4WSE2ED 10-5X...

Zero point setting

Dither signal setting

Sensitivity setting

Mating connec-tor assignment

Current control Voltage controlControl "13" Control "9"

Supply voltageA +15 V +15 VB –15 V –15 VC ⊥ ⊥

Command valueD ±10 mA ±10 VE Re = 100 Ω Re≥50kΩ

Measuring output for control spool

F 1) ±10 mA 2) Load max. 1 kΩ

+10Vagainst⊥2) Ri≈4.7kΩ

1) In valves with mechanical return, part F is not used.2) With nominal spool stroke

Current con-sumption at the mating connec-tor port

AMax. 150 mA Max. 150 mA

BD

0 to ±10 mA ≤0.2mAE

Supply voltage: ±15 V ±3 %, residual ripple < 1 %Command value: Command value at the mating connector port D = positive against mating connector port E results in flow from P to A and B to T. MeasuringoutputFhaspositivesignalagainst⊥. Command value at the mating connector port D = negative against mating connector port E results in flow from P to B and A to T. MeasuringoutputFhasnegativesignalagainst⊥.Measuring output: The voltage or current signal is proportional to the control spool stroke.

Important: Electric signals taken out via control electronics (e.g. actual value) must not be used for switching off safety-relevant machine functions!

5

10

20

30

40

100

200

1

2

3

4

5

6

7

8

302010 705040 200 3001001

2

15

45

607590

60

100

90

60

80

20

40

20

60

40

10090

80

-20-40-60-80

4020 60 80

-5

5

110

-100

100

110


Characteristic curves (measured with HLP 32, ϑoil = 40 °C ± 5 °C)Flow/load function (tolerance ±10 %) with 100 % command value signal

Rated flow5 l/min = Curve 110 l/min = Curve 220 l/min = Curve 330 l/min = Curve 4

45 l/min = Curve 560 l/min = Curve 675 l/min = Curve 790 l/min = Curve 8

Flow

inl/min→

Valvepressuredifferentialinbar→

Δp = Valve pressure differential (inlet pressure pP minus load pressure pL and minus return flow pressure pT)

Tolerance field of the flow command value function at constant valve pressure differential

P→A;B→T

P→B;A→T

Flow in %

Command value in %

Tolerance field

Typical flow curve

–30

–25

–20

–15

–10

–5

0

5

10 100 700

0

–45

–90

–135

–180

–225

–270

–315

50 50020 200

–30

–25

–20

–15

–10

–5

0

5

10 100 7000

–45

–90

–135

–180

–225

–270

–315

50 50020 200

0

10

20

30

40

50

60

70

80

90

100

50 100 150 200 250 300 325 0

10

20

30

40

50

60

70

80

90

100

50 100 150 200 250 300 325

0 20

40

60

80

100

10

20

30

50

70

10

90

0 20

40

60

80

100

10

20

30

50

70

10

90


Characteristic curves: Type 4WS.2EM 10 and 4WSE2ED 10 (measured with HLP 32, ϑoil = 40 °C ± 5 °C)Transition function with pressure rating 315 bar, step response without flow

4WS.2EM 10Rated flow 5, 10, 20 l/min

4WSE2ED 10Rated flow 5, 10, 20 l/min

Time in ms →

Spoo

l stro

ke in

% →

Spoo

l stro

ke in

% →

Time in ms →40 bar 70 bar 140 bar 210 bar 315 bar

Frequency response with pressure rating 315 bar, stroke frequency without flow4WS.2EM 10Rated flow 5, 10, 20 l/min


Ampl

itude

ratio

in d

B →

Ampl

itude

ratio

in d

B →

Frequency in Hz → Frequency in Hz →

Dependency of the frequencyf at –90° on the operating pressure p and the inlet amplitude4WS.2EM 10Rated flow 5, 10, 20 l/min


5 % 25 % 100 %

Inle

t am

plitu

de in

% →

Frequency at –90° in Hz →40 bar 70 bar 140 bar 210 bar 315 bar

Inle

t am

plitu

de in

% →

Frequency at –90° in Hz →

Phas

e an

gle

in°

→

Phas

e an

gle

in°

→

0 20

40

60

80

100

10

20

30 40

30

50

70

10

90

0 20

40

60

80

100

10

20

30 40

30

50

70

10

90

–30

–25

–20

–15

–10

–5

0

5

10 100 7000

–45

–90

–135

–180

–225

–270

–315

50 50020 200–30

–25

–20

–15

–10

–5

0

5

10 100 7000

–45

–90

–135

–180

–225

–270

–315

50 50020 200

0

10

20

30

40

50

60

70

80

90

100

50 100 150 200 250 300 325 0

10

20

30

40

50

60

70

80

90

100

50 100 150 200 250 300 325



4WS.2EM 10Rated flow 30 l/min

4WSE2ED 10Rated flow 30 l/min

Spoo

l stro

ke in

% →

Spoo

l stro

ke in

% →

Time in ms → Time in ms →40 bar 70 bar 140 bar 210 bar 315 bar

Frequency response with pressure rating 315 bar, stroke frequency without flow4WS.2EM 10Rated flow 30 l/min


Ampl

itude

ratio

in d

B →

Frequency in Hz →

Ampl

itude

ratio

in d

B →

Frequency in Hz →

Phas

e an

gle

in°

→

Phas

e an

gle

in°

→



Dependency of the frequencyf at –90° on the operating pressure p and the inlet amplitude

5 % 25 % 100 %

40 bar 70 bar 140 bar 210 bar 315 bar

Inle

t am

plitu

de in

% →


Inle

t am

plitu

de in

% →


0 20

40

60

80

100

10

20

30 40

30

50

70

10

90

0 20

40

60

80

100

10

20

30 40

30

50

70

10

90

2 20 50 100

–25

–20

–15

–10

–5

0

5

300 700

–150

–120

– 90

– 60

– 30

10– 0–30

200

0

10

2030

40

50

60

70

80

90

100

50 100 150 200 250 300 325 0

10

20

30

40

50

60

70

80

90

100

50 100 150 200 250 300 325






Spoo

l stro

ke in

% →

Time in ms →Sp

ool s

troke

in %

→Time in ms →



Ampl

itude

ratio

in d

B →

Frequency in Hz →

Phas

e an

gle

in°

→

2 20 50 100

–25

–20

–15

–10

–5

0

5

700

–150

–120

– 90

– 60

– 30

10– 0–30

300200

Ampl

itude

ratio

in d

B →

Frequency in Hz →

Phas

e an

gle

in°

→

5 % 25 % 100 %




Inle

t am

plitu

de in

% →


Inle

t am

plitu

de in

% →


0 20

40

60

80

100

10

20

30 40

30

50

70

10

90

0 20

40

60

80

100

10

20

30 40

30

50

70

10

90

2 20 50 100

–25

–20

–15

–10

–5

0

5

300 700

–150

–120

– 90

– 60

– 30

10– 0–30

200 2 20 50 100

–25

–20

–15

–10

–5

0

5

700

–150

–120

– 90

– 60

– 30

10– 0–30

300200

0

10

20

30

40

50

60

70

80

90

100

50 100 150 200 250 300 325 0

10

20

30

40

50

60

70

80

90

100

50 100 150 200 250 300 325





Spoo

l stro

ke in

% →

Time in ms →

Spoo

l stro

ke in

% →




Ampl

itude

ratio

in d

B →

Frequency in Hz →

Phas

e an

gle

in°

→

Ampl

itude

ratio

in d

B →

Frequency in Hz →

Phas

e an

gle

in°

→

5 % 25 % 100 %




Inle

t am

plitu

de in

% →


Inle

t am

plitu

de in

% →


0 30

40

60

80

100

10

20

20

30

50

70

10

90

40 0 20

40

60

80

100

10

20

30 40

30

50

70

10

90

2 20 50 100

–25

–20

–15

–10

–5

0

5

300 700

–150

–120

– 90

– 60

– 30

10– 0–30

200 2 20 50 100

–25

–20

–15

–10

–5

0

5

300 700

–150

–120

– 90

– 60

– 30

10– 0–30

200

0

10

2030

40

50

60

7080

90

100

50 100 150 200 250 300325 50 100 150 200 250 3003250

10

20

30

40

50

60

70

8090

100





Spoo

l stro

ke in

% →

Time in ms →




Ampl

itude

ratio

in d

B →

Frequency in Hz →

Phas

e an

gle

in°

→

Ampl

itude

ratio

in d

B →

Frequency in Hz →

Phas

e an

gle

in°

→

5 % 25 % 100 %




Inle

t am

plitu

de in

% →


Inle

t am

plitu

de in

% →


Spoo

l stro

ke in

% →

Time in ms →

0 30

40

60

80

100

10

20

20

30

50

70

10

90

40 0 20

40

60

80

100

10

20

30

30

50

70

10

90

40

2 20 50 100

–25

–20

–15

–10

–5

0

5

300 700

–150

–120

– 90

– 60

– 30

10– 0–30

200 2 20 50 100

–25

–20

–15

–10

–5

0

5

300 700

–150

–120

– 90

– 60

– 30

10– 0–30

200

0

10

2030

40

50

60

7080

90

100

50 100 150 200 250 300 325 50 100 150 200 250 3003250

10

20

30

40

50

60

70

8090

100





Spoo

l stro

ke in

% →

Time in ms →

Spoo

l stro

ke in

% →




Ampl

itude

ratio

in d

B →

Frequency in Hz →

Phas

e an

gle

in°

→

Ampl

itude

ratio

in d

B →

Frequency in Hz →

Phas

e an

gle

in°

→5 % 25 % 100 %




Inle

t am

plitu

de in

% →


Inle

t am

plitu

de in

% →


9515 68

9,5

M6

80

60 6

432

96

10

3 1

5424

102

127

12,5

46

65

3,7

9,5

P

A B

TBTA

YX

57 810

1,5

6

2

4

F1 F2P

BAT

F3F4

105

25,5

68

11

T1

9

X Y

0,01/100

Rzmax 4


Unit dimensions: Type 4WS2EM 10 (dimensions in mm)Mechanical return / external control electronics, type 4WS2EM 10-5X/…

1 Cap2 Mating connector

(order separately, see page 7)3 Space required for removing the mating connector,

also take care of connection cable!4 Exchangeable filter element with seals

Material no.: R9610019505 Profile seal for filter screw 16 x 1.5, part of item 46 Name plate7 Identical seal rings for ports A, B, P, TA and TB8 Identical seal rings for ports X and Y

Ports X and Y are also pressurized in case of "inter-nal" pilot oil supply.

9 Processed valve mounting faces, porting pattern ac-cording to ISO 4401-05-05-0-05 Port T1 is optional and is recommended for reduc-ingthepressuredropfromB→Twithratedflows> 45 l/min.

10 Valve mounting screws For reasons of stability, exclusively the following valve mounting screws may be used: 4 hexagon socket head cap screws ISO 4762-M6x70-10.9-flZn-240h-L (friction coefficient 0.09 – 0.14 according to VDA 235-101) (included in the delivery)

Subplates according to data sheet 45054 must be ordered separately.

Required surface quality of the counterpart

75

2,5

M6

10

60 6

447

111

12,5 24 54

102127

46

9,5

3,7

65

1

11 5 7 8 9

X

P

YA B

TA TB

2

1,5

6

9515

80

4 3

0,01/100

Rzmax 4 F1 F2P

BAT

F3F4

105

25,5

68

11

T1

10

X Y


Unit dimensions: Type 4WSE2EM 10 (dimensions in mm)Mechanical return / integrated control electronics, type 4WSE2EM 10-5X/…

1 Cap with integrated control electronics2 Electric zero point setting:

After removal of the SW2.5 plug screw, the zero point can be corrected using a potentiometer

3 Mating connector (order separately, see page 7)4 Space required for removing the mating connector,

also take care of connection cable!5 Exchangeable filter element with seals




11 Valve mounting screws For reasons of stability, exclusively the following valve mounting screws may be used: 4 hexagon socket head cap screws ISO 4762-M6x70-10.9-flZn-240h-L (friction coefficient 0.09 – 0.14 according to VDA 235-101) (included in the delivery) Subplates according to data sheet 45054 must be ordered

separately.


75

44,5 2,5 M6

159

60 6

447

111

10

3,7

5424

102

46

65

9,5

X Y

P

ATA TB

B

11 5 7 8 9

12

1,5

6

9515

80

34

0,01/100

Rzmax 4 F1 F2P

BAT

F3F4

105

25,5

68

11

T1

10

X Y


Unit dimensions: Type 4WSE2ED 10 (dimensions in mm)Electric and mechanical return / integrated control electronics, type 4WSE2ED 10-5X/…

1 Cap with integrated control electronics2 Electric zero point setting:

After removal of the SW2.5 plug screw, the zero point can be corrected using a potentiometer

3 Mating connector (order separately, see page 7)4 Space required for removing the mating

connector, also take care of connection cable!5 Exchangeable filter element with seals




11 Valve mounting screws For reasons of stability, exclusively the following valve mounting screws may be used: 4 hexagon socket head cap screws ISO 4762-M6x70-10.9-flZn-240h-L (friction coefficient 0.09 – 0.14 according to VDA 235-101) (included in the delivery) Subplates according to data sheet 45054 must be ordered

separately.


XA

TA

B

P

TB

Y

18 90 2

6,6

22

12

70

9,5

40,5

46,5

1

3

TA P X A B Y TB


1 R-ring 13 x 1.6 x 2 (A, B, P, TA and TB)2 R-ring 11.18 x 1.6 x 1.78 (X, Y)3 Mounting screws For reasons of stability, exclusively the following mounting screws may be used: 4 hexagon socket head cap screws ISO 4762-M6x50-10.9-flZn-240h-L (friction coefficient 0.09 - 0.14 according to VDA 235-101) (included in the delivery) To ensure proper operation of the servo-valves, it is neces-sary to flush the system before commissioning.The following values are guidelines for the flushing time per system: t = Flushing time in h V = Tank capacity in l QV = Pump flow in l/min

When topping up more than 10 % of the tank capacity, flush-ing must be repeated.The use of a directional valve with port in accordance with ISO 4401-05-05-0-05 is suited better than a flushing plate. This valve can also be used for flushing the actuator ports. Also refer to catalog sheet RE 07700.

t≥ •5

VQV

Symbol

with FKM seals, Material no. R900912450, weight: 2 kg

Flushing plate with porting pattern according to ISO 4401-05-05-0-05 (dimensions in mm)

Bosch Rexroth AG HydraulicsZum Eisengießer 197816 Lohr am Main, Germany Phone +49 (0) 93 52 / 18-0 Fax +49 (0) 93 52 / 18-23 [email protected] www.boschrexroth.de

© This document, as well as the data, specifications and other informa-tion set forth in it, are the exclusive property of Bosch Rexroth AG. It may not be reproduced or given to third parties without its consentThe data specified above only serve to describe the product. No state-ments concerning a certain condition or suitability for a certain applica-tion can be derived from our information. The information given does not release the user from the obligation of own judgment and verification. It must be remembered that our products are subject to a natural process of wear and aging


Notes

Documents

Industrial Hydraulics FAQs - Bosch Global · 6/20 Bosch Rexroth AG Hydraulics 4WRE; 4WREE RE 29061/10.05 Technical data (for applications outside these parameters, please consult