Instructions and maintenance

124 B E A R I N G L I N E

FEATURES

S H O U L D E R E D S H A F T S

Series F supports have been designed:

1 To be adaptable to shaft deflections.1 To resist chemical agents.1 To support radial loads.

P L A I N S H A F T S

Supports for shafts with constant diameter(plain) have main characteristics:

1 Compensation for mistakes in alignment.1 Adaptability to shaft deflections.1 Resistance against chemical agents.1 Support of radial loads.1 Support of light axial loads.1 High load capacity.

F E A T U R E S

1 "Bearing Line" supports guarantee a highreliability.

1 Modern technology used in all phases ofworkmanship and first quality materialsensure a quality product.

1 "Bearing Line" supports can be used in mostapplications.The main advantages are theirlight weight, their resistance against chemicalagents and corrosion, their mechanicalstrength, their easy cleaning, and their safetyfeatures.

This picture shows the supportsurface of one of our supports(1) compared with the surfaceof cast iron supports (2 - 3) ofwell known brands.

1

23

clean up to 50 °C 1 - 2 years

clean 50 ÷ 70 °C 4 - 8 months

clean 70 ÷ 100 °C 1 - 3 months

dirty up to 70 °C 2 - 8 weeks

dirty 70 ÷ 100 °C 2 - 4 weeks

humid + wet – 1 - 2 weeks

F/FC 1/8” GAS

SFL/SFL-Z M6

UCF/UCF-R 1/8” GAS

UCFC/UCFC-Y 1/8” GAS

UCFH/UCFH-R M6

UCFL/UCFL-W 1/8” GAS

UCHA/UCHA-R M6

UCHE/UCHE-R M6

UCP/UCP-R M6

UCPA/UCPA-R M6

UCT/UCT-R M6

UFL/UFL-Z M6

US/US-R M6

UCFQ/UCFQ-R M6

CS/CS-R M6

CL/CL-R M6

UCFT M6

UCFA/UCFA-R M6

UCFG/UCFG-R M6

SQL M6

125B E A R I N G L I N E

All "Bearing Line" supports are normallysupplied with grease-nipple (picture 1). In thetable you find the grease-nipple correspondingto their support. If the support is uneasy toreach, or in case of centralized lubrication, arapid coupling joint (Cod. 50005) for tube inRilsan Ø4 mm is available (picture 2).

T Y P E O F L U B R I C A N T

The recommended lubricant is grease withlithium soap (consistency 21/2 or 3) which iswater resistant and can be used withtemperatures from -20° C to + 120° C.

P R E - L U B R I C A T I O N

Initial lubrication is only recommended forsupports series F1200 - FC 1200. Lips of sealsmust be lubricated during assembly, in order toavoid damage during the first revolutions of theshaft.

R E - L U B R I C A T I O N

Bearing supports must be lubricated whilemoving, so that grease can cover the wholesurface of balls.Grease must be introduced slowly, often and insmall quantities.

L U B R I C A T I O N I N T E R V A L

Lubrication periods depend on use conditions ofbearing supports. Dust, humidity, load,temperature significantly affect the length oftime between re-lubrication.The table shows indicative values for re-lubrication periods.

LUBRICATIONAND MAINTENANCE

Useconditions

temperaturere-lubrification

period

Supporttype

Grease-nippletype

25 35 ÷ 45

30 45 ÷ 55

35 50 ÷ 60

40 55 ÷ 70

126 B E A R I N G L I N E

MOUNTING INSTRUCTIONS

Dimension "X" must be maintained to obtaintightness of supports.

Dimensions shaft/bore

Dimension "X" must be maintained usingsupports with seals.

d mm X mm

d mm X mm

d mm D mm X mm

12 20 ÷ 35

15 20 ÷ 35

16 22 ÷ 35

17 22 ÷ 35

20 30 ÷ 42

25 30 35 ÷ 45

30 35 45 ÷ 55

35 40 50 ÷ 60

40 45 55 ÷ 70

F L A N G E D B E A R I N G S U P P O R T S F O R S H O U L D E R E D S H A F T S

F L A N G E D B E A R I N G S U P P O R T S F O R P L A I N S H A F T S

MOUNTING INSTRUCTIONS

127B E A R I N G L I N E

The drawing shows some values that must becarefully maintained.

Diameter “d” near the bearing must have atolerance between -0,02 mm and -0,05 mm.

With heavy radial loads the coupling must beslightly forced.

Couplingshaft/support

Coupling shaft/seals

Both ends of the shaft must be made round inorder to simplify assembly of supports.

Tolerance of shaft depends on diameter andnumber of revolutions.

The drawing shows chamfers and radii necessaryto mount supports with seals correctly.

The shaft surface must be smooth and withoutdefects.

Seal lips and shaft must be well lubricatedbefore assembly.

The drawing shows chamfers and radii necessaryto mount supports with seals correctly.

The shaft surface must be smooth and withoutdefects.

Seal lips and shaft must be well lubricatedbefore assembly.

F L A N G E D B E A R I N G S U P P O R T S F O R S H O U L D E R E D S H A F T S

F L A N G E D B E A R I N G S U P P O R T S F O R S H O U L D E R E D S H A F T S

F L A N G E D B E A R I N G S U P P O R T S F O R P L A I N S H A F T S

F L A N G E D B E A R I N G S U P P O R T S F O R P L A I N S H A F T S

Low speeds Average speed High speedsh 9 h 8 h 7

LOCKING WITH GRUB SCREWS

In case of low speed and normal load wesuggest grub screws should be tightenedaccording to the values shown in the table.A more effective tightening can be achievedfixing the grub screws to a hole in the shaftduring assembly.

128 B E A R I N G L I N E

MOUNTING INSTRUCTIONS

A. Unscrew the grub screws inorder to free the bearing hole.

B. Insert the bearing on the shaft.

C. Tighten bolts on both sides.

D. Tighten screws according torecommended driving torque.

LOCKING WITH ECCENTRIC RING

Locking may be achieved rotating the ring.The ring has a blind hole that simplifies thelocking between bearing and shaft.The grub screw prevents the ring from releasingthe shaft.Recommended maximum driving torque isshown in the table.

A B

C D

A B

C D

A. Insert bearing and housing onthe shaft.

B. Tighten bolts on both sides.

C. Insert and block the eccentricring.

D. Tighten the ring screwsaccording to recommendeddriving torque.

12-15-16-17-20-25

30

45

40

ø

M6x0.75

M6x0.75

M6x0.75

M8x1.00

G (mm)

Grub screwsize

5.7

5.7

5.7

12.4

M (Nm)

Recomendeddriving torque

2500

2500

2500

3500

F (N)

Set screwmaximum axial load

12-15-16-17-20-25

30

45

40

ø

M6x0.75

M8x1.00

M10x1.25

M10x1.25

G (mm)

Grub screwsize

5.7

12.4

23.1

23.1

M (Nm)

Recomendeddriving torque

2500

3500

5000

5000

F (N)

Set screwmaximum axial load

129B E A R I N G L I N E

CALCULATION OF LOAD CAPACITY AND BEARING LIFE

LOAD COEFFICIENTS

Dynamic load coefficient C is used forcalculating life of bearings under dynamic loads.Static load coefficient Co is used for bearingsrunning at very low speeds or remaining stillunder load.Load coefficients are shown in the supportstables.

BEARING LIFE UNDER DYNAMIC LOADS

Life of bearing is the number of revolutions, orthe number of hours, bearings can run withoutshowing any sign of damage or deterioration inany of their components.

Basic life can be calculated with the followingformula:

CL10 = ( — )

3

P

where: L10 = life in millions of revolutions.C = dynamic load coefficient in N.P = equivalent dynamic load in N.

When bearings run at constant speed, their lifecan be determined in working hours:

1.000.000 CL10h = ———— ( — )

3

60 n P

where: L10h = life in hours.n = speed in rpm.

STATIC LOAD CAPACITY

Bearings dimensions are based on static loadcoefficient Co, and not on their life, in thefollowing cases:- when bearings are not running and are

subject to shocks.- when bearings are subject to slow oscillation

under load.

Equivalent static load can be calculated with thefollowing formula:

Po = Xo Fr + Yo Fa

where: Po = equivalent static load.Xo = radial static factor.Yo = axial static factor.Fr = radial load in N.Fa = axial load in N.

(See calculation of equivalent load)

CoThen calculate fs = —Po

where: fs = static load safety factor.Co = static load coefficient in N.Po = equivalent static load in N.

If fs value is less than value shown in the table,an insert with a higher Co must be chosen.

Choice of bearingdimensions

Fs working conditions

1 Normal working conditions

1,5 Insert subject to vibrations or shocks

2 ÷ 2,5 Noiseless applications.

1205 0.28 2.4 2.3 3.5

1206 0.24 2.8 2.6 4.1

1207 0.23 2.9 2.7 4.2

1208 0.22 3.0 2.9 4.4

130 B E A R I N G L I N E

CALCULATION OF LOAD CAPACITY AND BEARING LIFE

S U P P O R T S S E R I E S F - F C

DYNAMIC LOAD (RADIAL)

P = Fr

where: P = equivalent dynamic load in N.Fr = radial load in N.

COMBINED DYNAMIC LOAD (RADIAL + AXIAL)

FaP = Fr + Y1 Fa with = — ≤ eFr

where: P = equivalent dynamic load in N.Fr = radial load in N.Fa = axial load in N.Y = axial load factor.

FaP = 0,65Fr + Y2 Fa with = — >eFr

(See table below)

COMBINED STATIC LOAD (RADIAL + AXIAL)

Po = Fr + Yo Fa

where: Po = equivalent static load in N.Fr = radial load in N.Fa = axial load in N.Y = axial load factor.

(See table below)

S U P P O R T S S E R I E S U C - U F

DYNAMIC LOAD (RADIAL)

P = Fr

where: P = equivalent dynamic load in N.Fr = radial load in N.

COMBINED DYNAMIC LOAD (RADIAL + AXIAL)

P = XFr + YFa

where: P = equivalent dynamic load in N.Fr = radial load in N.Fa = axial load in N.X = radial load factor.Y = axial load factor.

(See table below)

COMBINED STATIC LOAD (RADIAL + AXIAL)

Po = 0,6Fr + 0,5Fa

where: Po = equivalent static load in N.Fr = radial load in N.Fa = axial load in N.

If Po < Fr” then consider Po = Fr

IMPORTANT: Fa ≤ 20% C - Calculate Fa/Co ratio- Compare result with value e- Use X and Y factors in relation to Fa/Co ratio

and to value.

Calculation ofequivalent load

Bearing type e Yo Y1 Y2

Fa/Co e

Calculation factors

YXYX

Fa/Fr > eFa/Fr ≤ e

0.025 0.22 1 0 0.56 2

0.04 0.24 1 0 0.56 18

0.07 0.27 1 0 0.56 16

0.13 0.31 1 0 0.56 14

0.25 0.37 1 0 0.56 12

0.5 0.44 1 0 0.56 1

131B E A R I N G L I N E

Bearing life can be determined in relation to therevolutions per minute (rpm) and the C/P ratio, asshown in the graph below:

HOW TO USE THE GRAPH

data: n = 200 rpm P = 4000 NC = 22400 N Co = 17900 N

22400calculate C/P = ———— = 5,6

4000

results: L10 = 180 millions of revolutionsL10h = 15.000 hours

CALCULATION EXAMPLE

Using calculation formulae previously shown it ispossible to solve this calculation example with thehelp of the graph:

n = 200 rpm P = 4000 NC = 22400 N Co = 17900 N

C 22400L10 = ( — )

3

= ( ——— )3

=P 4000

= 175,6 millions of revolutions

1.000.000 C 1.000.000 22400L10h = ———— ( — )

3

= ———— ( ——— ) =60 n P 60 · 200 4000

= 14.635 hours

Graph for life calculation

CALCULATION OF LOAD CAPACITY AND BEARING LIFE

Shaftd

mm

Speeds for shaft tolerances

rpm

h6 h7 h8 h9 h11

L I M I T I N G S P E E D S - S H A F T T O L E R A N C E

12 9500 6000 4300 1500 950

15 9500 6000 4300 1500 950

16 9500 6000 4300 1500 950

17 9500 6000 4300 1500 950

20 8500 5300 3800 1300 850

25 7000 4500 3200 1000 700

30 6300 4000 2800 900 630

35 5300 3400 2200 750 530

40 4800 3000 1900 670 480

➠

Bearing life

Limiting speeds

~~

SeriesF

d 25 13000 (6200) 12000 (5800) 3500 (3100)

30 12000 (5600) 11200 (5300) 3500 (3100)

35 11500 (5300) 10000 (5000) 3200 (3000)

40 mm 11500 (5000) 10000 (4700) 3200 (3000)

SeriesFC

d 30 13000 (6000) 12000 (5800) 3500 (3000)

35 mm 12800 (6000) 11000 (5300) 3200 (3000)

SeriesSFL / SFL-Z

d 12-15-16-17 7000 3200 6500 3000 3000 2000

20 mm 6200 2900 6000 2800 2800 1800

SeriesUCFQ / UCFQ-R

d 12 - 15 - 16 - 17 12000 (-) 12000 (-) 3500 (-)

20 12500 (-) 11500 (-) 3200 (-)

25 12500 (-) 11500 (-) 3200 (-)

30 12800 (-) 11000 (-) 3200 (-)

35 12300 (-) 10500 (-) 3000 (-)

40 mm 12000 (-) 10000 (-) 3000 (-)

SeriesSQL

d 12-15-16-17 6500 (-) 6000 (-) 2800 (-)

20 mm 5800 (-) 5300 (-) 2500 (-)

SeriesUCF / UCF-R

d 20 - 25 13000 (6200) 12000 (5800) 3500 (3100)

30 13000 (6000) 12000 (5800) 3500 (3100)

35 12800 (6000) 11000 (5300) 3200 (3000)

40 mm 12500 (5800) 10800 (5100) 3200 (3000)

132 B E A R I N G L I N E

PRODUCTION PROGRAM

MAX. RADIAL LOADCAPACITY OF HOUSINGS

✑ Values indicated in thetable above, areobtained at 23° C.

✑ Values indicated in: N.

✑ Values of polyamideversion (values ofpolypropylene versionsin brackets).

✑ For further informationplease consult cataloguepages regarding bearingtype you are interested in.

d 25

30 13000 (6000) 12000 (5800) 3200 (3000)

35 mm 12800 (6000) 11000 (5300) 3200 (3000)

d 12-15-16-17 mm 7000 (-) 7300 (-) 3200 (-)

25 mm (-) (-) (-)

d 20 6900 (3200) 7500 (3500) 3800 (3200)

25 6750 (2950) 7200 (3000) 3500 (3100)

30 12000 (5800) 13000 (6000) 3200 (3000)

35 11000 (5300) 12800 (6000) 3200 (3000)

40 mm 10800 (5100) 12850 (5800) 3000 (2800)

SeriesUFL / UFL-Z

d 12-15-16-17 6200 (3200) 6500 (3000) 3000 (2000)

20 mm 5800 (2900) 6000 (2800) 2800 (1800)

SeriesUCFT

PRODUCTION PROGRAM

133B E A R I N G L I N E

MAX. RADIAL LOADCAPACITY OF HOUSINGS

✑ Values indicated in thetable above, areobtained at 23° C.

✑ Values indicated in: N.

✑ Values of polyamideversion (values ofpolypropylene versionsin brackets).

✑ For further informationplease consult cataloguepages regarding bearingtype you are interested in.

SeriesUCFC / UCFC-Y

SeriesUCFL / UCFL-W

SeriesUCFH / UCFH-R

d 12 - 15 - 16 - 17 6500 (-) 7000 (-) 3200 (-)

20 7000 (-) 7500 (-) 3000 (-)

25 7500 (-) 8000 (-) 2800 (-)

30 8000 (-) 8800 (-) 2600 (-)

35 mm 8500 (-) 9000 (-) 2600 (-)

SeriesUCP / UCP-R

d 12 -15-16-17 6500 (2000) 2000 (1000) 3500 (1500) 1000 (600)

20 8500 (3200) 2600 (1600) 4200 (2000) 1200 (800)

25 10000 (3600) 3100 (1600) 5000 (2100) 1500 (1000)

30 12000 (5500) 3500 (1800) 6000 (2400) 1700 (1200)

35 12500 (6000) 3700 (2000) 6500 (2600) 1800 (1300)

40 mm 13000 (5800) 4000 (2200) 7000 (3200) 1900 (1400)

d 20 12000 (–) 10000 (–) 2800 (–)

25 12500 (–) 11000 (–) 3200 (–)

30 mm 12800 (–) 11500 (–) 3200 (–)

PRODUCTION PROGRAM

134 B E A R I N G L I N E

MAX. RADIAL LOADCAPACITY OF HOUSINGS

✑ Values indicated in thetable above, areobtained at 23° C.

✑ Values indicated in: N.

✑ Values of polyamideversion (values ofpolypropylene versionsin brackets).

✑ For further informationplease consult cataloguepages regarding bearingtype you are interested in.

SeriesUCPA / UCPA-R

d 20 6500 (3000) 2000 (1000) 4000 (1600) 1000 (700)

25 7800 (3200) 2500 (1400) 4800 (1800) 1300 (900)

30 mm 11000 (4000) 2900 (1500) 5700 (2000) 1500 (1000)

SeriesUCT / UCT-R

d 20 7800 (3200) 2500 (1400) 4800 (1800) 1000 (700)

25 6500 (3000) 2000 (1000) 4000 (1600) 1300 (900)

30 12000 (5500) 3500 (1800) 6000 (2400) 1500 (1000)

35 mm 10000 (3600) 2900 (1500) 5500 (2000) 1700 (1200)

SeriesUCHA / UCHA-R

d 20 10000 (3600) 2500 (1400) 4800 (1800) 1000 (700)

25 8500 (3200) 2000 (1000) 4000 (1600) 1300 (900)

30 14000 (6500) 3500 (1800) 6000 (2400) 1500 (1000)

35 mm 12000 (5500) 2900 (1500) 5500 (2000) 1700 (1200)

SeriesUCFA / UCFA-R

d 20 8000 (–) 2000 (–) 2500 (–) 1000 (–)

25 8500 (–) 3000 (–) 3000 (–) 1300 (–)

30 mm 9000 (–) 3500 (–) 3500 (–) 1500 (–)

SeriesUCHE / UCHE-R

d 20 10000 (3600) 2500 (1400) 4800 (1800) 1000 (700)

25 8500 (3200) 2000 (1000) 4000 (1600) 1300 (900)

30 14000 (6500) 3500 (1800) 6000 (2400) 1500 (1000)

35 mm 12000 (5500) 2900 (1500) 5500 (2000) 1700 (1200)

SeriesUCFG / UCFG-R