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Spherical roller bearings

Spherical roller bearings are suitable where:

  • bearing arrangements are subjected to high and very high radial loads ➤ section
  • relatively high axial loads occur on one or both sides, in addition to high radial forces ➤ section
  • dynamic or static misalignments of the shaft relative to the housing, or deflections of the shaft, must be freely compensated by the bearing ➤ section
  • high shock type loads must be supported dynamically
  • locating bearings with a very high load carrying capacity are required

Spherical roller bearing:
comparison of load carrying capacity with barrel roller bearing of the same dimensions, compensation of misalignments

Fr = radial load

Cr = basic dynamic load rating

Bearing design

Design variants

The standard product range of spherical roller bearings comprises:

The bearings are available in the majority of sizes as X-life designs with significantly higher performance ➤ link. Larger catalogue bearings and other bearing designs GL 1.

Bearings of basic design

The outer ring has a curved raceway

Spherical roller bearings are part of the group of radial roller bearings. These self-retaining rolling bearings have two rows of rollers with a mutually curved raceway in the outer ring and two raceways inclined relative to the bearing axis in the inner ring. This raceway design allows these bearings to combine a range of characteristics, which are essential to many applications, in one bearing, such as angular adjustability for example ➤ section. The symmetrical barrel rollers are guided by brass, sheet steel or polyamide cages ➤ section.

Roller contact design

The stress distribution at the contact points between the rollers and raceways is determined by the contact surface of the rollers. As a result, the roller geometry is matched to the raceway. This gives a favourable load distribution over the entire length of the roller and prevents both edge stresses and stress peaks at the ends of the roller ➤ Figure.

Uniform load distribution due to optimised roller and raceway profile

F = load on the rollers


The bore is cylindrical or tapered

Bearings of basic design are supplied without seals and with a cylindrical bore. With the exception of series 233..-A, these bearings are also available with a tapered bore ➤ Figure.

Bearings with a tapered bore have a bore taper of 1:12 and the suffix K, whereas spherical roller bearings of the series 249, 240 and 241 have a bore taper of 1:30 and the suffix K30 ➤ Figure and ➤ section.

Distinguishing features of bearings in the basic design

In addition to the design of the bore (cylindrical or tapered), the specific bearing design is also dependent on the bearing series and bearing size. The key distinguishing features are the:

Bearings with a loose central rib on the inner ring

A loose central rib provides axial guidance of the rollers in the load-free zone ➤ Figure and ➤ Table. This reduces friction in the bearing, which in turn leads to lower operating temperatures.

Spherical roller bearings of basic design, cylindrical bore

Fr = radial load

Fa = axial load


Spherical roller bearing without central rib on inner ring


Spherical roller bearing with rigid central rib on inner ring

Spherical roller bearings of basic design, tapered bore

Fr = radial load

Fa = axial load


Spherical roller bearing without central rib on inner ring


Spherical roller bearing with rigid central rib on inner ring

Spherical roller bearings of basic design, cylindrical or tapered bore, with loose central rib

Fr = radial load

Fa = axial load


Cylindrical bore


Tapered bore


Loose central rib

Basic bearing design variants

Bearings of basic design are available in the following variants:

  • bearings without central rib on inner ring ➤ Table
  • bearings with rigid central rib on inner ring ➤ Table
  • bearings with loose central rib ➤ Table

Bearing design for bearings without central rib on inner ring

Design

Suffix

Two sheet steel cages,
surface hardened or coated, guidance on outer ring, X-life

E1-XL

One brass double comb cage,
guided by rollers, inner ring
with two lateral retaining ribs, X-life

E1A-XL-M

Two window cages made from glass fibre reinforced polyamide,
guidance on inner ring, X-life

E1-XL-TVPB

Bearing design for bearings with rigid central rib on inner ring

Design

Suffix

Two brass cages,
guidance on inner ring, inner ring with two lateral retaining ribs and one central rib

MB

B-MB

One steel double comb cage, guidance on inner ring, inner ring with two lateral retaining ribs and one central rib

B-FB1

Two brass cages,
guidance on outer ring, inner ring with two lateral retaining ribs and one central rib

A-MA

AS-MA

One brass double comb cage, guidance on outer ring, inner ring with two lateral retaining ribs and one central rib, X-life

XL-MA1

Bearing design for bearings with loose central rib

Design

Suffix

Two sheet steel cages,
surface hardened,
guidance on inner ring, X-life

BE-XL

Two sheet steel cages,
surface hardened,
guidance on outer ring, X-life, vibrating screen design

BE-XL-JPA-T41A

One brass double comb cage,
guidance on inner ring, inner ring with two lateral retaining ribs, X-life

BEA-XL-MB1

Sealed spherical roller bearings

A selection of standard bearings is also available with seals on both sides ➤ Figure and ➤ section.

Series 222, 223

Sealed bearings of series 222 and 223 include an oversize width and the prefix WS in the designation ➤ Figure and ➤ section.

Series 240, 241

The main dimensions of sealed bearings of series 240 and 241 correspond to the main dimensions of open bearings.

Further information on sealed spherical roller bearings TPI 218.

Spherical roller bearings of basic design, sealed on both sides


Bearing with contact seal 2RSR (D < 160)


Bearing with contact seal 2VSR (160 < D ≦ 320)


Bearing with contact seal 2RSR (320 < D ≦ 620)

Spherical roller bearings for vibratory machinery

The rolling bearings fitted in vibratory machinery must support not only high loads and high speeds but also accelerations and centrifugal forces. In many cases, these applications involve adverse environmental conditions such as contamination and moisture.

Spherical roller bearings are matched to the operating conditions of vibratory machinery

The special spherical roller bearings developed by Schaeffler are matched to the operating conditions in vibratory machinery and have proved highly successful in practical use. In particular, the cages of the rolling bearings are subjected to stresses arising from high radial accelerations. In unfavourable cases, these may be overlaid by axial accelerations as well.

The support of angular misalignments reduces additional sliding motions

The rotating imbalance generates a rotating shaft deflection and additional sliding motion within the bearings. This increases the friction and therefore the operating temperature of the bearings. The special spherical roller bearings can support dynamic angular adjustments up to 0,15°.

Basic designs of special spherical roller bearings

Schaeffler special spherical roller bearings for vibratory machinery have the main dimensions of dimension series 23 (DIN 616:2000, ISO 15:2017).

Specification T41A (T41D)

Schaeffler spherical roller bearings for vibratory machinery are manufactured in accordance with the specification T41A or T41D ➤ Table. This takes into consideration the particular requirements of the application. The specification defines, for example, the tolerances of the bore and outside diameter, as well as the radial internal clearance of the bearings. The other tolerances are in accordance with tolerance class Normal to ISO 492:2014.

Schaeffler spherical roller bearings for vibratory machinery are described in detail in TPI 197. This can be requested from Schaeffler.

Bearings with adapter sleeve or withdrawal sleeve

Ready-to-fit mounting kits facilitate the ordering and mounting of bearings

Complete bearing mounting kits are also available for use in locating spherical roller bearings with a tapered bore onto a cylindrical shaft journal. These units comprise the bearing, adapter sleeve, tab washer and locknut, or bearing and withdrawal sleeve ➤ Figure. Adapter sleeves and withdrawal sleeves allow the bearings to be located on smooth and stepped shafts ➤ Figure and ➤ Figure. The fixing elements are described in the product tables and must also be stated when placing the order.

Spherical roller bearing with adapter sleeve

Fr = radial load

Fa = axial load


Spherical roller bearing with rigid central rib on inner ring, with adapter sleeve


Adapter sleeve


Locknut


Tab washer

X-life premium quality

Spherical roller bearings are available in numerous series and dimensions as X-life bearings ➤ Figure. These bearings exhibit considerably higher performance than conventional spherical roller bearings. This is achieved, for example, through the modified internal construction, higher surface quality of the contact areas, optimised contact geometry between rollers and raceways, new roller dimensions with crowned ends and the optimised cage design, as well as through the higher quality of the steel and rolling elements and a loose central rib ➤ Table.

Spherical roller bearing in X-life design


Cage


Barrel roller


Outer ring


Inner ring

Advantages

Increased customer benefits due to X-life

These technical enhancements offer a range of advantages, such as:

  • a more favourable load distribution in the bearing and thus a higher dynamic load carrying capacity of the bearings ➤ Figure
  • a higher running accuracy and smooth running
  • running with reduced friction and greater energy efficiency
  • lower heat generation in the bearing
  • higher possible speeds
  • lower lubricant consumption and therefore longer maintenance intervals if relubrication is carried out
  • a measurably longer operating life of the bearings
  • high operational security
  • compact, environmentally-friendly bearing arrangements

The benefits of X-life: lower operating costs, higher machine availability

In conclusion, these advantages improve the overall cost-efficiency of the bearing position significantly and thus bring about a sustainable increase in the efficiency of the machine and equipment.

Suffix XL

X-life spherical roller bearings include the suffix XL in the designation ➤ section and ➤ link.

Areas of application

Suitable for a further area of application

Due to their special technical features, X-life spherical roller bearings are highly suitable for bearing arrangements in:

  • dryer rolls and calenders
  • mining machinery, conveyor belts, crushers, vibrating screens, vertical mills, roller presses
  • continuous casting plant
  • passenger elevators
  • marine propulsions systems

X-life indicates a high product performance density and thus a particularly significant benefit to the customer.

Load carrying capacity

Suitable for very high radial loads and high axial loads

Spherical roller bearings can support high axial loads in both directions and very high radial loads. They are designed for very high load carrying capacity and, since they have the maximum possible number of large and particularly long barrel rollers (bearings in E1 design), are also suitable for the heaviest loads ➤ section.

Axial load carrying capacity of bearings with adapter sleeve or withdrawal sleeve

Due to their internal construction, spherical roller bearings can support high axial loads. Where bearings with adapter sleeves or withdrawal sleeves are located on a smooth shaft without a fixed axial stop (e. g. rigid shoulder), the axial load carrying capacity of the bearing arrangement is dependent on the friction between the shaft and the sleeve.

If there is any doubt about the axial load carrying capacity of the location method, please consult Schaeffler.

Axial load and higher speeds

Friction in the bearing rises with increasing load and speed

Spherical roller bearings support high axial forces from both directions. However, if very high axial loads occur in combination with very high speeds, the resulting increase in temperature and friction in the bearing must be taken into consideration.

Compensation of angular misalignments

Spherical roller bearings compensate dynamic and static angular misalignments

Due to the concave rolling element raceway in the outer ring, spherical roller bearings are capable of angular adjustment ➤ section. As a result, they permit skewing between the outer and inner ring within certain limits, without causing damage to the bearings, and can thus compensate misalignments, shaft deflections and housing deformations.

Permissible adjustment angle

The possible skewing is dependent on the magnitude of the load

The permissible adjustment angle is stated for loads P < 0,1 · Cr ➤ Table. The adjustment angles apply if:

  • the angular adjustment angle is constant (static angular misalignment)
  • the rotating component is the inner ring

The extent to which the stated values can be used in practice is essentially dependent on the design of the bearing arrangement, sealing etc.

Reduced adjustment angle

If the rotating component is the outer ring, the inner ring undergoes tumbling motion or the adjustment angles are larger than stated in the table, the angular adjustment facility of the bearings is smaller. In such cases, please consult Schaeffler.

Permissible adjustment angle for sealed bearings

The permissible adjustment angle is smaller for sealed bearings

In sealed spherical roller bearings, the angular adjustment facility is 0,5° from the central position. The sealing function is not adversely affected by misalignments occurring up to this value.

Permissible adjustment angle of spherical roller bearings

Bearing series

Adjustment angle

°

213..-E1, 222..-E1, 222..-BE(BEA),230, 230..-E1(E1A), 230..‑BE(BEA), 238, 239, 240

1,5

223..-E1, 223.. -BE(BEA), 231, 231..E1(E1A), 231..-BE(BEA), 232, 232..-E1(E1A), 232.. -BE(BEA), 233..-A, 240..-BE(BEA),
241, 241..-BE(BEA)

2

Lubrication

The bearings can be lubricated via a circumferential groove and lubrication holes

In order to ensure good lubrication, most spherical roller bearings have a circumferential groove and three lubrication holes in the outer ring. The lubricant is pressed into the bearing via the groove and holes ➤ Figure. Due to the direct and symmetrical feed system, a uniform supply of lubricant to the rows of rollers is achieved. On both sides of the bearing, sufficiently large cavities for collection of the used grease or openings for the escape of grease must be provided.

Series 213

Bearings of series 213 with a bore diameter d ≦ 35 mm do not have a lubrication groove and lubrication hole.

Lubrication for ungreased bearings

Open spherical roller bearings are not greased. These bearings must be lubricated with oil or grease.

If shafts with a vertical axis are supported using spherical roller bearings, particular attention must be paid to ensuring the reliable provision of lubricant to the bearings.

Compatibility with plastic cages

When using bearings with plastic cages, compatibility between the lubricant and the cage material must be ensured if synthetic oils, lubricating greases with a synthetic oil base or lubricants containing a high proportion of EP additives are used.

Observe oil change intervals

Aged oil and additives in the oil can impair the operating life of plastics at high temperatures. As a result, stipulated oil change intervals must be strictly observed.

Lubrication-specific suffixes

Suffixes

H40 without lubrication groove and lubrication holes
H40CA 6 lubrication holes in the outer ring
H40AB 6 lubrication holes in the inner ring
H40AC 6 lubrication holes and one lubrication groove in the inner ring
S lubrication groove and lubrication holes in the outer ring
SY 3 lubrication holes in the outer ring, no lubrication groove

Lubrication of the bearing via a lubrication groove and lubrication holes in the outer ring


Lubrication groove with lubrication holes


Cavity for collecting grease

Sealed bearings

Greased bearings are normally maintenance-free

Sealed bearings are supplied already filled with a high quality lithium soap grease with a mineral oil base and are maintenance-free for most applications. Whether or not a bearing requires relubrication during its operating life is dependent on the operating conditions (e. g. on the operating temperatures and operating speeds). Where bearings cannot be relubricated, the grease operating life must be observed.

Sealing

Certain bearings are also available with seals

Sealed spherical roller bearings have sealing shields on both sides, which protect the bearing reliably against contamination. In order to ensure optimum sealing integrity, various sealing concepts are used, which are determined by size. The bearings should not be heated above +80 °C or washed out prior to mounting.

Series 240, 241

The seal material used is FKM

For spherical roller bearings of series 240 and 241, the standard seal material is fluoro elastomer.

Seals made from fluoro elastomer, such as Viton (FKM, FPM) for example, comprise particularly high performance materials which, when heated above approx. +300 °C, may release vapours and gases that are harmful to health if they are inhaled or come into contact with the eyes. Contact with seals which have been heated to such high temperatures is still dangerous even after cooling. Contact with skin must be avoided in all cases. A doctor must be consulted immediately if such vapours are inhaled. In all cases, the user is responsible for the safe handling of the seals during the operating life, as well as for scrapping the seals and disposing of them correctly.

Such temperatures may occur, for example, if a welding torch is used in the dismantling of a bearing. In these cases, the currently valid safety data sheet must be observed.

Speeds

Speeds in the product tables

Two speeds are indicated in the product tables:

  • the kinematic limiting speed nG
  • the thermal speed rating nϑr

Limiting speeds

The limiting speed nG is the kinematically permissible speed of the bearing. Even under favourable mounting and operating conditions, this value should not be exceeded without prior consultation with Schaeffler ➤ link.

Reference speeds

nϑr is used to calculate nϑ

The thermal speed rating nϑr is not an application-oriented speed limit, but is a calculated ancillary value for determining the thermally safe operating speed nϑ ➤ link.

Bearings with contact seals

For bearings with contact seals, no speed ratings are defined in accordance with DIN ISO 15312:2004. As a result, only the limiting speed nG is given in the product tables for these bearings.

Noise

Schaeffler Noise Index

The Schaeffler Noise Index (SGI) is not yet available for this bearing type ➤ link. The data for these bearing series will be introduced and updated in stages.

Temperature range

Limiting values

The operating temperature of the bearings is limited by:

  • the dimensional stability of the bearing rings and rolling elements
  • the cage
  • the lubricant
  • the seals

Possible operating temperatures of spherical roller bearings ➤ Table.

Permissible temperature ranges

Operating temperature

Open spherical
roller bearings

Sealed spherical
roller bearings

with brass or sheet steel cage

with polyamide cage PA66

Series 222, 223

Series 240, 241

–30 °C to +200 °C

–30 °C to +120 °C

–40 °C to +100 °C,
for short periods up
to +120 °C, limited by the lubricant and
seal material

–30 °C to +180 °C,
for short periods up
to +200 °C, limited by the lubricant and
seal material

In the event of anticipated temperatures which lie outside the stated values, please contact Schaeffler.

Cages

Solid brass cages are used as standard

Standard cages for spherical roller bearings ➤ Table, ➤ Table, ➤ Table, ➤ Table. Other cage designs are available by agreement. With such cages, however, suitability for high speeds and temperatures as well as the basic load ratings may differ from the values for the bearings with standard cages. Essential information on cages ➤ link.

Cages in design B and in bearings without a suffix

Solid cage made from brass or sheet metal

Spherical roller bearings with a rigid central rib on the inner ring (design B or bearings without a suffix) have a solid brass cage. Bearings without a cage suffix have sheet metal cages ➤ Table and ➤ Table.

Cages in bearings with the suffix MB/MB1, MA/MA1

Solid brass cage

Bearings with the suffix MB or MB1 have solid brass cages, which are guided on the inner ring. In bearings with the suffix MA or MA1, the solid brass cages are guided on the outer ring ➤ Table, ➤ Table and ➤ Table.

Bearings with the suffix M

Solid brass cage

Bearings with the suffix M have a roller-guided solid brass cage ➤ Table and ➤ Table.

Bearings with the suffix E1/BE

Sheet steel cage, solid brass cage or solid cage made from polyamide PA66

Bearings with the suffix E1 and BE and without a cage suffix have sheet steel cages. The two cage halves are retained by a guiding ring or loose central rib in the outer or inner ring ➤ Table and ➤ Table. The other bearings of E1 design have solid cages made from glass fibre reinforced polyamide PA66 or solid brass cages (suffix TVPB or M). The sheet steel cages are surface hardened or coated and, as a result, are particularly well protected against wear.

Cage, cage suffix, bore code

Bearing series

Cage design

Table/
Figure

Sheet steel
cages

Plastic cage

Brass
cage

Steel cage

Guidance on

Guidance by rollers

Guidance on

inner ring

outer ring

inner ring

inner
ring

outer ring

TVPB

M

MB1

MB

MA

FB1

Bore code

213..-E1-XL

08 to 18

04 to 07 19 to 22

➤ Table,
and

222..-E1-XL

05 to 36

➤ Table,

222..-BE-XL

38 to 48

➤ Table,

222..-BEA-XL

52 to 72

➤ Table,

223..-E1-XL

08 to 30

➤ Table,

223..-BE-XL

32 to 44

➤ Table,

223..-BE..-XL-JPA

32 to 44

➤ Table,

223..-BEA-XL

48 to 56

➤ Table,

230..-E1-XL

22 to 40

➤ Table,

230..-E1A-XL

22 to 40

➤ Table,

230..-BE-XL

44 to 60

➤ Table,

230..-BEA-XL

64 to /630

➤ Table,

230

/670 to /1250

➤ Table,

231..-E1-XL

20 to 38

➤ Table,

231..-E1A-XL

20 to 38

➤ Table,

231..-BE-XL

40 to 56

➤ Table,

231..-BEA-XL

60 to /560

➤ Table,

231

/600 to /1000

➤ Table,

232..-E1-XL

18 to 36

➤ Table,

232..-E1A-XL

18 to 36

➤ Table,

232..-BE-XL

38 to 48

➤ Table,

232..-BEA-XL

52 to /500

➤ Table,

232

/530 to /800

➤ Table,

233..-A, ..-AS

20 to 40

➤ Table,

238

/600 to /1180

/6301)

➤ Table,
and

239

36 to /1180

➤ Table,

240..-BE-XL

24 to 60

➤ Table,

240..-BEA-XL

64 to /630

➤ Table,

240

/670 to /1120

➤ Table,

241..-BE-XL

22 to 88

➤ Table,

241..-BEA-XL

92 to /560

➤ Table,

241

/600 to /1000

up to /900

➤ Table,
and

248

92 to /1800

➤ Table,

249

/670 to /1320

➤ Table,

  1. Cage designation MA1.

For high continuous temperatures and applications with difficult operating conditions, bearings with brass or sheet steel cages should be used. If there is any uncertainty regarding cage suitability, please consult Schaeffler.

Internal clearance

Radial internal clearance

The standard is CN

Spherical roller bearings with cylindrical and tapered bore are manufactured as standard with radial internal clearance CN (normal) ➤ Table and ➤ Table.

A number of bearings are also available by agreement with the smaller internal clearance C2 and with the larger internal clearance C3 and C4 ➤ Table and ➤ Table.

Spherical roller bearings with cylindrical bore

The values for radial internal clearance correspond to DIN 620-4:2004 (ISO 5753-1:2009) ➤ Table. These are valid for bearings which are free from load and measurement forces (without elastic deformation).

Radial internal clearance of spherical roller bearings with cylindrical bore

Nominal
bore diameter

Radial internal clearance

d

C2
(Group 2)

CN
(Group N)

C3
(Group 3)

C4
(Group 4)

mm

μm

μm

μm

μm

over

incl.

min.

max.

min.

max.

min.

max.

min.

max.

18

24

10

20

20

35

35

45

45

60

24

30

15

25

25

40

40

55

55

75

30

40

15

30

30

45

45

60

60

80

40

50

20

35

35

55

55

75

75

100

50

65

20

40

40

65

65

90

90

120

65

80

30

50

50

80

80

110

110

145

80

100

35

60

60

100

100

135

135

180

100

120

40

75

75

120

120

160

160

210

120

140

50

95

95

145

145

190

190

240

140

160

60

110

110

170

170

220

220

280

160

180

65

120

120

180

180

240

240

310

180

200

70

130

130

200

200

260

260

340

200

225

80

140

140

220

220

290

290

380

225

250

90

150

150

240

240

320

320

420

250

280

100

170

170

260

260

350

350

460

280

315

110

190

190

280

280

370

370

500

315

355

120

200

200

310

310

410

410

550

355

400

130

220

220

340

340

450

450

600

400

450

140

240

240

370

370

500

500

660

450

500

140

260

260

410

410

550

550

720

500

560

150

280

280

440

440

600

600

780

560

630

170

310

310

480

480

650

650

850

630

710

190

350

350

530

530

700

700

920

710

800

210

390

390

580

580

770

770

1010

800

900

230

430

430

650

650

860

860

1120

900

1 000

260

480

480

710

710

930

930

1 220

1 000

1 120

290

530

530

770

770

1 050

1 050

1 430

1 120

1 250

320

580

580

840

840

1 140

1 140

1 560

1 250

1 400

350

630

630

910

910

1 240

1 240

1 700

1 400

1 600

380

700

700

1 020

1 020

1 390

1 390

1 890

1 600

1 800

420

780

780

1 140

1 140

1 550

1 550

2 090

Spherical roller bearings with tapered bore

The values for radial internal clearance correspond to DIN 620-4:2004 (ISO 5753-1:2009) ➤ Table. These are valid for bearings which are free from load and measurement forces (without elastic deformation).

Radial internal clearance of spherical roller bearings with tapered bore

Nominal
bore diameter

Radial internal clearance

d

C2
(Group 2)

CN
(Group N)

C3
(Group 3)

C4
(Group 4)

mm

μm

μm

μm

μm

over

incl.

min.

max.

min.

max.

min.

max.

min.

max.

18

24

15

25

25

35

35

45

45

60

24

30

20

30

30

40

40

55

55

75

30

40

25

35

35

50

50

65

65

85

40

50

30

45

45

60

60

80

80

100

50

65

40

55

55

75

75

95

95

120

65

80

50

70

70

95

95

120

120

150

80

100

55

80

80

110

110

140

140

180

100

120

65

100

100

135

135

170

170

220

120

140

80

120

120

160

160

200

200

260

140

160

90

130

130

180

180

230

230

300

160

180

100

140

140

200

200

260

260

340

180

200

110

160

160

220

220

290

290

370

200

225

120

180

180

250

250

320

320

410

225

250

140

200

200

270

270

350

350

450

250

280

150

220

220

300

300

390

390

490

280

315

170

240

240

330

330

430

430

540

315

355

190

270

270

360

360

470

470

590

355

400

210

300

300

400

400

520

520

650

400

450

230

330

330

440

440

570

570

720

450

500

260

370

370

490

490

630

630

790

500

560

290

410

410

540

540

680

680

870

560

630

320

460

460

600

600

760

760

980

630

710

350

510

510

670

670

850

850

1 090

710

800

390

570

570

750

750

960

960

1 220

800

900

440

640

640

840

840

1 070

1 070

1 370

900

1 000

490

710

710

930

930

1 190

1 190

1 520

1 000

1 120

540

780

780

1 020

1 020

1 300

1 300

1 650

1 120

1 250

600

860

860

1 120

1 120

1 420

1 420

1 800

1 250

1 400

660

940

940

1 220

1 220

1 550

1 550

1 960

1 400

1 600

740

1 060

1 060

1 380

1 380

1 750

1 750

2 200

1 600

1 800

820

1 180

1 180

1 540

1 540

1 950

1 950

2 500

Dimensions, tolerances

Dimension standards

The main dimensions of spherical roller bearings correspond to DIN 635‑2:2009, DIN 616:2000 and ISO 15:2017.

Width tolerances for bearings with the suffixes BE and BEA

For spherical roller bearings with the suffixes BE and BEA, the width tolerances are reduced by half compared to the standard values. Values ➤ Table. The running accuracy corresponds to tolerance class 5.

Width tolerances for spherical roller bearings with the suffixes BE and BEA

Nominal bore diameter

Width deviation

d

tΔBs

mm

μm

over

incl.

U

L

18

30

0

–60

30

50

0

–60

50

80

0

–75

80

120

0

–100

120

180

0

–125

180

250

0

–150

250

315

0

–175

315

400

0

–200

400

500

0

–225

500

630

0

–250

630

800

0

–375

800

1000

0

–500

Tolerance symbols ➤ Table
U = upper limit deviation
L = lower limit deviation

Specification T41A and T41D

The tolerances for d and D are restricted

Spherical roller bearings to specification T41A and T41D have restricted tolerances for the inside and outside diameter ➤ Table. In bearings with a tapered bore, the reduced tolerance range applies to the outside diameter only.

Restricted diameter tolerances for the inner and outer ring in bearings to specification T41A and T41D

Inner ring

Outer ring

Nominal
bore diameter

Bore deviation

Nominal outer ring diameter

Outside diameter deviation

d

tΔdmp

D

tΔDmp

mm

μm

mm

μm

over

incl.

U

L

over

incl.

U

L

30

50

0

–7

80

150

–5

–13

50

80

0

–9

150

180

–5

–18

80

120

0

–12

180

315

–10

–23

120

180

0

–15

315

400

–13

–28

180

250

0

–18

400

500

–13

–30

250

315

0

–21

500

630

–15

–35

Tolerance symbols ➤ Table
U = upper limit deviation
L = lower limit deviation

Chamfer dimensions

The limiting dimensions for chamfer dimensions correspond to DIN 620‑6:2004. Overview and limiting values ➤ section. Nominal value of chamfer dimension ➤ link.

Tolerances

The tolerances for the dimensional and running accuracy of spherical roller bearings correspond to tolerance class Normal in accordance with ISO 492:2014. Tolerance values ➤ Table. The tolerance values for tapered bores with a taper angle 1:12 correspond to ISO 492 ➤ Table; the tolerance values for tapered bores with a taper angle 1:30 correspond to ➤ Table. The running tolerances for spherical roller bearings with the suffixes BE and BEA correspond to tolerance class 5. Tolerance values in accordance with ISO 492 ➤ Table.

For bearing arrangements with higher requirements for dimensional and running accuracy, spherical roller bearings are available with the tolerance class 5 to ISO 492:2014. In such cases, please consult Schaeffler.

Suffixes

For a description of the suffixes used in this chapter ➤ Table and medias interchange http://www.schaeffler.de/std/1B69.

Suffixes and corresponding descriptions

Suffix

Description of suffix

A-MA, AS-MA

Two brass cages, guidance on outer ring, inner ring with two lateral retaining ribs and one central rib

Standard combinations

B-FB1

One steel cage, guidance on inner ring, inner ring with two lateral retaining ribs and one central rib

Standard combinations

BE-XL

Two sheet steel cages, surface hardened, guidance on inner ring, X-life

Standard combinations

BE-XL-JPA

Two sheet steel cages, surface hardened, guidance on outer ring, X-life

Standard combinations

BEA-XL-MB1

One brass double comb cage, guidance on inner ring, inner ring with two lateral retaining ribs, X-life

Standard combinations

E1-XL

Two sheet steel cages, surface hardened or coated, guidance on outer ring, X-life

Standard combinations

E1-XL-TVPB

Two window cages made from glass fibre reinforced polyamide, guidance on inner ring, X-life

Standard combinations

E1A-XL-M

One brass double comb cage, guided by rollers, inner ring with two lateral retaining ribs, X-life

Standard combinations

MB,
B-MB

Two brass cages, guidance on inner ring, inner ring with two lateral retaining ribs and one central rib

Standard combinations

MA1

One brass cage, guidance on outer ring, inner ring with two lateral retaining ribs and one central rib

Standard combinations
2RSR

Contact seal (lip seal) on both sides with sheet steel reinforcement, made from nitrile rubber (NBR); grease fill level 25% to 40%, filled with high pressure grease

Standard

2VSR

Contact seal (lip seal) on both sides with steel reinforcement, made from fluoro rubber (FKM); grease fill level 60% to 100%, filled with high temperature grease

Standard

continued ▼


Suffixes and corresponding descriptions

Suffix

Description of suffix

C2

Radial internal clearance C2 (smaller than normal)

Available by agreement

C3

Radial internal clearance C3 (larger than normal)

C4

Radial internal clearance C4 (larger than C3)

H40

Without lubrication groove and lubrication holes

H40CA

6 lubrication holes in the outer ring

H40AB

6 lubrication holes in the inner ring

H40AC

6 lubrication holes and one lubrication groove in the inner ring

H78(*)

3 uniformly distributed threaded holes in one end face of the outer ring
(* weight-oriented module letter, please contact us)

H151

One 45° retaining slot in the outer ring

H151B

One 15° retaining slot in the outer ring

K

Tapered bore, taper 1:12

K30

Tapered bore, taper 1:30

P5

Dimensional and running accuracy in accordance
with ISO tolerance class 5

S

Lubrication groove and lubrication holes in outer ring

SY

3 lubrication holes in the outer ring, no lubrication groove

T41A

For oscillating load with restricted diameter tolerances, radial internal clearance C4

T41D

For oscillating load with restricted diameter tolerances, radial internal clearance C4,
bore with thin chromium coating

W209B

Inner ring made from case hardening steel

XL

X-life bearing

continued ▲

Structure of bearing designation

Examples of composition of bearing designation

The designation of bearings follows a set model. Examples ➤ Figure to ➤ Figure. The composition of designations is subject to DIN 623-1 ➤ Figure.

Spherical roller bearing with cylindrical bore, without central rib on inner ring: designation structure

Spherical roller bearing for vibratory machinery, with cylindrical bore, without central rib on inner ring, to specification T41A: designation structure

Spherical roller bearing with tapered bore, rigid central rib on inner ring: designation structure

Spherical roller bearing with tapered bore and adapter sleeve, without central rib on inner ring: designation structure

Dimensioning

Equivalent dynamic bearing load

P = a substitute force for combined load and various load cases

The basic rating life equation L = (C/P)p used in the dimensioning of bearings under dynamic load assumes a load of constant magnitude and direction. In radial bearings, this is a purely radial load. If this condition is not met, an equivalent dynamic bearing load P must be determined for the rating life calculation. In the case of radial bearings, this is a radial load of constant magnitude and direction, which has the same effect on the rating life as the load occurring in practice.

Fa/Fr ≦ e or Fa/Fr > e

The calculation of P is dependent on the load ratio Fa/Fr and the calculation factor e ➤ Equation and ➤ Equation.

Equivalent dynamic load


Equivalent dynamic load


Legend

P N

Equivalent dynamic bearing load

Fr N

Radial load

Fa N

Axial load

e, Y1, Y2 -

Factors ➤ link

Equivalent static bearing load

For spherical roller bearings subjected to static load ➤ Equation.

Equivalent static load


Legend

P0 N

Equivalent static bearing load

F0r, F0a N

Largest radial or axial static bearing load present (maximum load)

Y0 -

Factor ➤ link

Static load safety factor

S0 = C0/P0

In addition to the basic rating life L (L10h, Lhmr), it is also always necessary to check the static load safety factor S0 ➤ Equation.

Static load safety factor


Legend

S0 -

Static load safety factor

C0 N

Basic static load rating

P0 N

Equivalent static bearing load

Axial load carrying capacity of bearings with adapter sleeve

Where bearings with adapter sleeves are located on a smooth shaft without a fixed axial stop (e. g. rigid shoulder), their axial load carrying capacity is dependent on the friction between the shaft and the sleeve ➤ section.

If there is any doubt about the axial load carrying capacity of the location method, please consult Schaeffler.

Minimum load

In continuous operation, a minimum load of P = C0r/100 is required

In order that no slippage occurs between the contact partners, the spherical roller bearings must be constantly subjected to a sufficiently high radial load. Based on experience, a minimum radial load of the order of P = C0r/100 is thus necessary for continuous operation.

If the minimum radial load is lower than indicated above, please consult Schaeffler.

Design of bearing arrangements

Support bearing rings over their entire circumference and width

In order to allow full utilisation of the load carrying capacity of the bearings and thus also achieve the requisite rating life, the bearing rings must be rigidly and uniformly supported by means of contact surfaces over their entire circumference and over the entire width of the raceway. Support can be provided by means of a cylindrical or tapered seating surface ➤ Figure to ➤ Figure. The accuracy of mating parts must meet specific requirements ➤ Table, ➤ Table, ➤ Table.

Radial location – bearings with cylindrical bore

For secure radial location, tight fits are necessary

In addition to supporting the rings adequately, the bearings must also be securely located in a radial direction, to prevent creep of the bearing rings on the mating parts under load ➤ Figure. This is generally achieved by means of tight fits between the bearing rings and the mating parts. If the rings are not secured adequately or correctly, this can cause severe damage to the bearings and adjacent machine parts. Influencing factors, such as the conditions of rotation, magnitude of the load, internal clearance, temperature conditions, design of the mating parts, mounting and dismounting options etc., must be taken into consideration in the selection of fits.

If shock type loads occur, tight fits (transition fit or interference fit) are required to prevent the rings from coming loose at any point. Clearance, transition or interference fits ➤ Table and ➤ Table.

The following information provided in Technical principles must be taken into consideration in the design of bearing arrangements:

  • conditions of rotation ➤ link
  • tolerance classes for cylindrical shaft seats (radial bearings) ➤ link
  • shaft fits ➤ link
  • tolerance classes for bearing seats in housings (radial bearings) ➤ link
  • housing fits ➤ link
  • shaft tolerances for adapter sleeves and withdrawal sleeves ➤ link

Axial location – bearings with cylindrical bore

The bearings must also be securely located in an axial direction

As a tight fit alone is not normally sufficient to also locate the bearing rings securely on the shaft or in the housing bore in an axial direction, this must usually be achieved by means of an additional axial location or retention method. The axial location of the bearing rings must be matched to the type of bearing arrangement. Shaft and housing shoulders, housing covers, nuts, spacer rings and retaining rings etc., are fundamentally suitable ➤ Figure, ➤ Figure, ➤ Figure and ➤ Figure.

Location of a spherical roller bearing in a rotary kiln – example


Spherical roller bearing 24164‑BE-XL


Felt ring seals


Labyrinths with relubrication facility


End cap


Oil feed ducts


Oil grooves


Flake graphite cast iron housing

Axial location – bearings with tapered bore

Location by means of locknut and tab washer

If a bearing with a tapered bore is mounted directly on a tapered shaft journal, the bearing can be axially located with ease using a locknut and tab washer ➤ Figure.

Spherical roller bearing with tapered bore, mounted directly on the tapered shaft journal


Tapered journal with fixing thread


Locknut


Tab washer

Location of bearings by means of adapter sleeve or withdrawal sleeve

Mounting can be carried out quickly and reliably by means of wrench sets from Schaeffler

The location of spherical roller bearings by means of adapter sleeve or withdrawal sleeve on a smooth or stepped cylindrical shaft is an easy-to-fit and operationally reliable method ➤ section and ➤ Figure. It requires no additional means of retention on the shaft. The bearings can be positioned at any point on smooth shafts. Axial load carrying capacity of such bearing arrangements ➤ section. Further information on adapter sleeves ➤ link.

Mounting of the adapter sleeve and withdrawal sleeve

While the bearing is being slid onto the adapter sleeve, the withdrawal sleeve is pressed into the tapered bearing bore until the required reduction in radial internal clearance is achieved. The position is fixed by means of a locknut. The inner ring is abutted against a shoulder on the shaft ➤ Figure. The required adapter sleeves or withdrawal sleeves must be stated additionally in the order ➤ section and ➤ link.

Location of spherical roller bearings by means of adapter sleeve or withdrawal sleeve


Bearing with adapter sleeve, adapter sleeve nut (shaft nut) and tab washer


Bearing with withdrawal sleeve, locknut and tab washer, abutment of the inner ring against a shaft shoulder

Location by means of adapter sleeve, axial abutment by means of a support ring

If an adapter sleeve connection is used and it is expected that the frictional forces of the sleeve cannot reliably support high axial forces, the bearing inner ring can be abutted by means of a support ring against a shaft shoulder ➤ Figure. Axial guidance forces in the opposing direction are supported by means of form fit. The mounting dimensions of the support ring in the product tables must be observed ➤ link.

Location of a spherical roller bearing by means of adapter sleeve and support ring on a stepped shaft


Spherical roller bearing


Adapter sleeve


Support ring


Locknut with tab washer

Location of bearings with a tapered bore on a tapered shaft

Axial location by means of fixing nut, ring nut and locking pin

Where shafts must support high torques, it is not always permissible to cut the thread for the fixing nut of the bearing into the shaft due to the notch effect. In this case, a slot with well rounded transitions is grooved into the shaft. A split ring with an external thread is inserted in the slot and secured by means of a feather key or pin. The fixing nut is screwed onto the ring nut and secured ➤ Figure.

Location of a spherical roller bearing on a tapered shaft


Spherical roller bearing


Fixing nut with retaining bracket


Retaining pin


Ring nut

Dimensional, geometrical and running accuracy of cylindrical bearing seats

A minimum of IT6 should be provided for the shaft seat and a minimum of IT7 for the housing seat

The accuracy of the cylindrical bearing seat on the shaft and in the housing should correspond to the accuracy of the bearing used. For spherical roller bearings with the tolerance class Normal, the shaft seat should correspond to a minimum of standard tolerance grade IT6 and the housing seat to a minimum of IT7. Guide values for the geometrical and positional tolerances of bearing seating surfaces ➤ Table, tolerances t1 to t3 in accordance with ➤ Figure. Numerical values for IT grades ➤ Table.

Guide values for the geometrical and positional tolerances of bearing seating surfaces

Bearing
tolerance class

Bearing seating surface

Standard tolerance grades to ISO 286-1
(IT grades) 

to ISO 492

to DIN 620

Diameter tolerance

Roundness tolerance

Parallelism tolerance

Total axial runout
tolerance of abutment shoulder

t1

t2

t3

Normal

PN (P0)

Shaft

IT6 (IT5)

Circumferential load

IT4/2

Circumferential load

IT4/2

IT4

Shaft IT6 (IT5)

Point load

IT5/2

Point load

IT5/2

IT4

Housing

IT7 (IT6)

Circumferential load

IT5/2

Circumferential load

IT5/2

IT5

Housing IT7 (IT6)

Point load

IT6/2

Point load

IT6/2

IT5

5

P5

Shaft

IT5

Circumferential load

IT2/2

Circumferential load

IT2/2

IT2

Shaft IT5

Point load

IT3/2

Point load

IT3/2

IT2

Housing

IT6

Circumferential load

IT3/2

Circumferential load

IT3/2

IT3

Housing IT6

Point load

IT4/2

Point load

IT4/2

IT3


Numerical values for ISO standard tolerances (IT grades) to ISO 286-1:2010

IT grade

Nominal dimension in mm

over

18

30

50

80

120

180

250

315

incl.

30

50

80

120

180

250

315

400

Values in μm

IT2

2,5

2,5

3 4 5 7 8 9

IT3

4

4

5 6 8 10 12 13

IT4

6 7 8 10 12 14 16 18

IT5

9 11 13 15 18 20 23 25

IT6

13 16 19 22 25 29 32 36

IT7

21 25 30 35 40 46 52 57

continued ▼

Numerical values for ISO standard tolerances (IT grades) to ISO 286-1:2010

IT grade

Nominal dimension in mm

over

400

500

630

800

1  000

1  250

1  600

incl.

500

630

800

1  000

1  250

1  600

2  000

Values in μm

IT2

10 11 13 15 18 21 25

IT3

15 16 18 21 24 29 35

IT4

20 22 25 28 33 39 46

IT5

27 32 36 40 47 55 65

IT6

40 44 50 56 66 78 92

IT7

63 70 80 90 105 125 150

continued ▲

Roughness of cylindrical bearing seating surfaces

Ra must not be too high

The roughness of the bearing seats must be matched to the tolerance class of the bearings. The mean roughness value Ra must not be too high, in order to maintain the interference loss within limits. The shafts must be ground, while the bores must be precision turned. Guide values as a function of the IT grade of bearing seating surfaces ➤ Table.

Roughness values for cylindrical bearing seating surfaces – guide values

Nominal diameter
of the bearing seat

d (D)

Recommended mean roughness value
for ground bearing seats

Ramax

mm

μm

Diameter tolerance (IT grade)

over

incl.

IT7

IT6

IT5

IT4

80

1,6

0,8

0,4

0,2

80

500

1,6

1,6

0,8

0,4

500

1  250

3,21)

1,6

1,6

0,8

  1. For the mounting of bearings using the hydraulic method, a value Ra = 1,6 μm must not be exceeded

Tolerances for tapered bearing seats

Specifications for tapered bearing seats

For bearings located directly on a tapered shaft journal, the data are in accordance with ➤ Figure.

Mounting dimensions for the contact surfaces of bearing rings

The contact surfaces for the rings must be of sufficient height

The mounting dimensions of the shaft and housing shoulders, and spacer rings etc., must ensure that the contact surfaces for the bearing rings are of sufficient height. However, they must also reliably prevent rotating parts of the bearing from grazing stationary parts. Proven mounting dimensions for the radii and diameters of the abutment shoulders are indicated in the product tables. These dimensions are limiting dimensions (maximum or minimum dimensions); the actual values should not be higher or lower than specified.

Suitable bearing housings for spherical roller bearings

A large range of housings is available

For economical, operationally reliable and easily interchangeable bearing arrangement units, the spherical roller bearings can also be combined with Schaeffler bearing housings ➤ Figure. These easy-to-fit units fulfil all of the requirements for modern machine and plant designs with favourable maintenance-related characteristics.

Due to the large number of application areas, an extensive range of bearing housings is available for bearings with cylindrical and tapered bores. These include split and unsplit plummer block housings, take-up housings, flanged housings and housings for specific industrial and railway applications. Detailed information on bearing housings can be found in publication GK 1 http://www.schaeffler.de/std/1B63. This book can be ordered from Schaeffler.

Split plummer block housing SNS with a spherical roller bearing


Split plummer block housing SNS


Spherical roller bearing

Mounting and dismounting

The mounting and dismounting options for spherical roller bearings, by thermal, hydraulic or mechanical methods, must also be taken into consideration in the design of the bearing position. Example ➤ Figure.

Mounting of large bearings with a hydraulic nut


Spherical roller bearing with tapered bore mounted directly on the tapered shaft journal


Hydraulic nut


Ensure that the bearings are not damaged during mounting

Spherical roller bearings are not separable. In the mounting of non‑separable bearings, the mounting forces must always be applied to the bearing ring with a tight fit.

Mounting of bearings with a tapered bore

Suitable methods

Bearings with a tapered bore are mounted with a tight fit on the shaft or adapter and withdrawal sleeve ➤ Figure, ➤ Figure and ➤ Figure. The measurement of the reduction in radial internal clearance or of the axial drive-up distance of the inner ring on the tapered bearing seat serves as an indication of the tight fit.

Measuring the reduction in radial internal clearance during mounting of the bearings

The measurement is usually carried out with a feeler gauge

The reduction in radial internal clearance is the difference between the radial internal clearance before mounting and the bearing clearance after mounting of the bearing ➤ Figure, ➤ Table and ➤ Table. The radial internal clearance must be measured first. During pressing on, the radial clearance (bearing clearance) must be checked until the necessary reduction in the radial internal clearance and the required tight fit is achieved.

If the values in the table are observed, secure radial location of the bearings will be achieved, i. e. the inner ring will be prevented from creeping under load. However, the mounting method does not ensure that an operating clearance which is appropriate to the application is also achieved simultaneously. In order to select the requisite internal clearance class, other factors influencing the operating clearance, such as the tempe-rature difference between the inner and outer ring and the housing bore tolerance for example, must be taken into consideration.

If there is any uncertainty regarding the selection of an internal clearance class for a specific application, please consult Schaeffler.

Reduction in radial internal clearance

sa = axial press-on distance (axial drive-up distance of the bearing)

sr = radial internal clearance before mounting

sr1 = radial internal clearance after mounting

sr – sr1 = reduction in radial internal clearance


Before mounting


After mounting

Reduction in radial internal clearance in mounting of spherical roller bearings with tapered bore

Nominal
bore diameter

Radial internal clearance
before mounting in accordance
with DIN 620-4:2004 (ISO 5753-1:2009)

Reduction in radial internal
clearance during mounting1)

d

CN

(Group N)

C3

(Group 3)

C4

(Group 4)

mm

mm

mm

mm

mm

over

incl.

min.

max.

min.

max.

min.

max.

min.

max.

24

30

0,03

0,04

0,04

0,055

0,055

0,075

0,015

0,02

30

40

0,035

0,05

0,05

0,065

0,065

0,085

0,02

0,025

40

50

0,045

0,06

0,06

0,08

0,08

0,1

0,025

0,03

50

65

0,055

0,075

0,075

0,095

0,095

0,12

0,03

0,04

65

80

0,07

0,095

0,095

0,12

0,12

0,15

0,04

0,05

80

100

0,08

0,11

0,11

0,14

0,14

0,18

0,045

0,06

100

120

0,1

0,135

0,135

0,17

0,17

0,22

0,05

0,07

120

140

0,12

0,16

0,16

0,2

0,2

0,26

0,065

0,09

140

160

0,13

0,18

0,18

0,23

0,23

0,3

0,075

0,1

160

180

0,14

0,2

0,2

0,26

0,26

0,34

0,08

0,11

180

200

0,16

0,22

0,22

0,29

0,29

0,37

0,09

0,13

200

225

0,18

0,25

0,25

0,32

0,32

0,41

0,1

0,14

225

250

0,2

0,27

0,27

0,35

0,35

0,45

0,11

0,15

250

280

0,22

0,3

0,3

0,39

0,39

0,49

0,12

0,17

280

315

0,24

0,33

0,33

0,43

0,43

0,54

0,13

0,19

315

355

0,27

0,36

0,36

0,47

0,47

0,59

0,15

0,21

355

400

0,3

0,4

0,4

0,52

0,52

0,65

0,17

0,23

400

450

0,33

0,44

0,44

0,57

0,57

0,72

0,2

0,26

450

500

0,37

0,49

0,49

0,63

0,63

0,79

0,21

0,28

500

560

0,41

0,54

0,54

0,68

0,68

0,87

0,24

0,32

560

630

0,46

0,6

0,6

0,76

0,76

0,98

0,26

0,35

630

710

0,51

0,67

0,67

0,85

0,85

1,09

0,3

0,4

710

800

0,57

0,75

0,75

0,96

0,96

1,22

0,34

0,45

800

900

0,64

0,84

0,84

1,07

1,07

1,37

0,37

0,5

900

1  000

0,71

0,93

0,93

1,19

1,19

1,52

0,41

0,55

1  000

1  120

0,78

1,02

1,02

1,3

1,3

1,65

0,45

0,6

1  120

1  250

0,86

1,12

1,12

1,42

1,42

1,8

0,49

0,65

1  250

1  400

0,94

1,22

1,22

1,55

1,55

1,96

0,55

0,72

  1. Valid only for solid steel shafts and hollow shafts with a bore no larger than half the shaft diameter. The following applies: bearings with a radial internal clearance before mounting in the upper half of the tolerance range are mounted using the larger value for the reduction in radial internal clearance, while bearings in the lower half of the tolerance range are mounted using the smaller value for the reduction in radial internal clearance.

Measuring the axial drive-up distance of the inner ring

Axial drive-up distance of the inner ring in spherical roller bearings with a tapered bore

Nominal bore diameter

Drive-up distance
on taper 1:121)

Drive-up distance
on taper 1:301)

Minimum radial internal clearance required after mounting, control value

d

Shaft

Sleeve

Shaft

Sleeve

With CN (Group N)

With C3 (Group 3)

With C4 (Group 4)

mm

mm

mm

mm

mm

mm

mm

mm

over

incl.

min.

max.

min.

max.

min.

max.

min.

max.

min.

min.

min.

24

30

0,3

0,35

0,3

0,4

0,015

0,02

0,035

30

40

0,35

0,4

0,35

0,45

0,015

0,025

0,04

40

50

0,4

0,45

0,45

0,5

0,02

0,03

0,05

50

65

0,45

0,6

0,5

0,7

0,025

0,035

0,055

65

80

0,6

0,75

0,7

0,85

0,025

0,04

0,07

80

100

0,7

0,9

0,75

1

1,7

2,2

1,8

2,4

0,035

0,05

0,08

100

120

0,7

1,1

0,8

1,2

1,9

2,7

2

2,8

0,05

0,065

0,1

120

140

1,1

1,4

1,2

1,5

2,7

3,5

2,8

3,6

0,055

0,08

0,11

140

160

1,2

1,6

1,3

1,7

3

4

3,1

4,2

0,055

0,09

0,13

160

180

1,3

1,7

1,4

1,9

3,2

4,2

3,3

4,6

0,06

0,1

0,15

180

200

1,4

2

1,5

2,2

3,5

4,5

3,6

5

0,07

0,1

0,16

200

225

1,6

2,2

1,7

2,4

4

5,5

4,2

5,7

0,08

0,12

0,18

225

250

1,7

2,4

1,8

2,6

4,2

6

4,6

6,2

0,09

0,13

0,2

250

280

1,9

2,6

2

2,9

4,7

6,7

4,8

6,9

0,1

0,14

0,22

280

315

2

3

2,2

3,2

5

7,5

5,2

7,7

0,11

0,15

0,24

315

355

2,4

3,4

2,6

3,6

6

8,2

6,2

8,4

0,12

0,17

0,26

355

400

2,6

3,6

2,9

3,9

6,5

9

5,8

9,2

0,13

0,19

0,29

400

450

3,1

4,1

3,4

4,4

7,7

10

8

10,4

0,13

0,2

0,31

450

500

3,3

4,4

3,6

4,8

8,2

11

8,4

11,2

0,16

0,23

0,35

500

560

3,7

5

4,1

5,4

9,2

12,5

9,6

12,8

0,17

0,25

0,36

560

630

4

5,4

4,4

5,9

10

13,5

10,4

14

0,2

0,29

0,41

630

710

4,6

6,2

5,1

6,8

11,5

15,5

12

16

0,21

0,31

0,45

710

800

5,3

7

5,8

7,6

13,3

17,5

13,6

18

0,23

0,35

0,51

800

900

5,7

7,8

6,3

8,5

14,3

19,5

14,8

20

0,27

0,39

0,57

900

1 000

6,3

8,5

7

9,4

15,8

21

16,4

22

0,3

0,43

0,64

1 000

1 120

6,8

9

7,6

10,2

17

23

18

24

0,32

0,48

0,7

1 120

1 250

7,4

9,8

8,3

11

18,5

25

19,6

26

0,34

0,54

0,77

1 250

1 400

8,3

10,8

9,3

12,1

21

27

22,2

28,3

0,36

0,59

0,84

  1. Valid only for solid steel shafts and hollow shafts with a bore no larger than half the shaft diameter. The following applies: bearings with a radial internal clearance before mounting in the upper half of the tolerance range are mounted using the larger value for the axial drive-up distance, while bearings in the lower half of the tolerance range are mounted using the smaller value for the axial drive-up distance.

Schaeffler Mounting Handbook

Rolling bearings must be handled with great care

Rolling bearings are well-proven precision machine elements for the design of economical and reliable bearing arrangements, which offer high operational security. In order that these products can function correctly and achieve the envisaged operating life without detrimental effect, they must be handled with care.

The Schaeffler Mounting Handbook MH 1 gives comprehensive information about the correct storage, mounting, dismounting and maintenance of rotary rolling bearings http://www.schaeffler.de/std/1B68. It also provides information which should be observed by the designer, in relation to the mounting, dismounting and maintenance of bearings, in the original design of the bearing position. This book is available from Schaeffler on request.

Legal notice regarding data freshness

The further development of products may also result in technical changes to catalogue products

Of central interest to Schaeffler is the further development and optimisation of its products and the satisfaction of its customers. In order that you, as the customer, can keep yourself optimally informed about the progress that is being made here and with regard to the current technical status of the products, we publish any product changes which differ from the printed version in our electronic product catalogue.

We therefore reserve the right to make changes to the data and illus­trations in this catalogue. This catalogue reflects the status at the time of printing. More recent publications released by us (as printed or digital media) will automatically precede this catalogue if they involve the same subject. Therefore, please always use our electronic product catalogue to check whether more up-to-date information or modification notices exist for your desired product.

Further information

In addition to the data in this chapter, the following chapters in Technical principles must also be observed in the design of bearing arrangements: