Tapered Roller Bearings

Tapered roller bearings comprise solid inner and outer rings with tapered raceways and tapered rollers in a window cage.

The bearings are in the form of:

standard designs open variants matched in pairs integral designs sealed on one side, JK0S.

Open bearings are not self-retaining. As a result, the inner ring with the rollers and the cage can be fitted separately from the outer ring.

Metric and inch size bearings are available. Designs with a K in the designation have inch dimensions. For new designs, however, bearings in metric sizes should always be used in preference.   Tapered roller bearings of series T7FC are supplied in X-life design. These bearings have improved surfaces, a higher performance combination of material and heat treatment as well as an optimised contact geometry. This improves the friction behaviour and increases the basic dynamic load rating. Under the same operating conditions, a significant increase in basic rating life is achieved. For certain applications, this means that a smaller bearing arrangement can be designed.     X-life bearings are indicated in the dimension tables.   Radial and axial load capacity   Tapered roller bearings can support axial loads in one direction and high radial loads.     They must normally be axially adjusted against a second bearing fitted in a mirror image arrangement. This bearing combination is fitted in an O or X arrangement, Figure and Figure .        Top Contact angle   The axial load carrying capacity is dependent on the contact angle; i.e. the larger the angle, the higher the load to which the bearing can be subjected.     The size of the contact angle and thus the load carrying capacity is indicated by the bearing-specific value e in the dimension tables. Bearings of series 313, 323..-B, T5ED and T7FC have a very high axial load carrying capacity due to their particularly large contact angle.   Compensation of angular misalignments   The modified line contact between the tapered rollers and the raceways ensures optimum stress distribution at the contact points, prevents edge stresses and allows the bearings to undergo angular adjustment.     At a load ratio P/Cr ≦ 0,2, the tilting of the bearing rings relative to each other must not exceed a maximum of 4 angular minutes. For higher loads or tilting angles, please contact us.   Matched bearings   Tapered roller bearings with the suffix N11CA are matched in pairs in an X arrangement and can therefore support high axial forces in both directions and moment loads.     The axial internal clearance of the bearing pair is defined by a ring between the two outer rings and is indicated in the suffix, see section link.     We can also supply tapered roller bearings by agreement as matched pairs in an O arrangement (N11CB).     When ordering, the number of bearings must be stated, not the number of bearing pairs.   Integral tapered roller bearings   Tapered roller bearings of series JK0S are ready-to-fit units sealed on one side and are predominantly fitted in pairs in an O arrangement. They are not separable and do not require regreasing.        Top No setting of axial internal clearance required   There is no need to set the axial internal clearance of the bearing pair. It is the result of the very narrowly toleranced projection (dimension u)between the inner and outer ring when the inner rings are clamped using a shaft nut or shaft end cover.     In order to achieve the correct axial internal clearance after fitting, the inner and outer rings have a tight fit.     In the case of integral tapered roller bearings fitted in pairs in an O arrangement, a suitable slot is formed on the outer ring for thesnap ring BR. The snap ring must be ordered separately.   Sealing   Tapered roller bearings of standard design and matched in pairs are not sealed.     Integral tapered roller bearings JK0S have a lip seal on one side.   Lubrication   Tapered roller bearings of standard design and matched in pairs can be lubricated with oil or grease.     Integral tapered roller bearings JK0S are filled with a high quality grease.   Operating temperature   Open tapered roller bearings can be used at operating temperatures from –30 °C to +120 °C. For continuous operating temperatures above+120 °C, please contact us.     Bearings with a lip seal can be used at operating temperatures from–30 °C to +110 °C, restricted by the grease and sealing ring material.   Cages   Open tapered roller bearings have sheet steel cages.     Integral bearings JK0S have cages made fromglass fibre reinforced polyamide 66.   Suffixes   Suffixes for available designs: see table.   Available designs   Suffix Description Design A Modified internal construction Standard N11CA-A.. Two tapered roller bearings matched in an X arrangement, with an intermediate ring between the outer rings. Axial internal clearance in μm B Increased contact angle X External dimensions matched to international standards P5 Increased accuracy

http://medias.schaeffler.com/medias/en!hp.info/303
30202
30203
30204
30205
30206
30207
30208
30208
30209
30209
30209N
30210
30211
30211
30211
30212
30212
30213
30214
30215
30216
30217
30218
30219
30220
30221
30222
30224
30226
30232
30234
30236
30238
30248
30302
30303D
30303
30303
30304
30304
30305D
30305
30306D
30306
30306
30307D
30307
30308D
30308
30308N
30309D
30309
30309N
30310D
30310DS
30310
30311D
30311
30312D
30312
30313D
30313
30314D
30314
30315D
30315
30316D
30316
30317D
30317
30318D
30318
30319D
30319
30320D
30320
30321D
30321
30322
30324D
30324
30326
30328
30330
30332
30334
30336
30338
31324
31593/20
31594/20
320/22
320/28
320/32
32004
32005
320052
32006
32007
32007/1D
32007
32008
32008-3
32009
32010
32011
32012
32013
32014
32015
32016
32018
32036
32038
32040
32052
32052
32056
322/32
32204
32205
32206
32207
32207
32208
32208
32209
32209
32210
32210
32211
32212
32213
32214
32214
32215
32215
32216
32217
32217
32218
32218
32219
32220
32220
32221
32222
32224
32226
32228
32230
32232
32234
32236
32238
32240
32244
32248
32303
32304
32305
32306
32307
32308
32309
32310
32310/55
32311
32312
32313
32314
32315
32316
32317
32318
32319
32320
32321
32322
32324
32326
32328
32330
32332
32334
32907
32908LFT
32910
32911
32912
32913
32915
32916
32917
32918
32920
32921
32922
32926
32928
32932
32934
32936
33005LFT
33006
33007
33008LFT
33009
33010
33011
33012
33012S
33013
33014
33015
33016
33017
33018
33019
33030
33108
33109
33110
33111
33112
33113
33115
33116
33117
33122
33205
33206
33207
33208
33208
33209
33210
33211
33212
33213
33214
33215
33216
33217
33220