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  Tapered Roller Bearings
Tapered Roller Bearings

Bearings of this type use conical rollers guided by a back-face rib on the cone. These bearings are capable of taking high radial loads and axial loads in one direction.

In the HR series, the rollers are increased in both size and number giving it an even higher load capacity. They are generally mounted in pairs in a manner similar to single-row angular contact ball bearings. In this case, the proper internal clearance can be obtained by adjusting the axial distance between the cones or cups of the two opposed bearings. Since they are separable, the cone assemblies and cups can be mounted independently.

Depending upon the contact angle, tapered roller bearings are divided into three types; normal angle, medium angle, and steep angle.

Double-row and four-row tapered roller bearings are also available. Pressed steel cages are generally used.


Metric Design Tapered Roller Bearings
For metric-design medium-angle and steep-angle tapered roller bearings, the respective contact angle symbol C or D is added after the bore number. For normal-angle tapered roller bearings, no contact angle symbol is used. Medium-angle tapered roller bearings are primarily used for the pinion shafts of differential gears of automobiles. Among those with high load capacity (HR series), some bearings have the basic number suffixed by J to conform to the specifications of ISO for the cup back face raceway diameter, cup width, and contact angle. Therefore, the cone assembly and cup of bearings with the same basic number suffixed by J are internationally interchangeable. Among metric-design tapered roller bearings specified by ISO 355, there are those having new dimensions that are different than the dimension series 3XX used in the past. Part of them are listed in the bearing tables. They conform to the specifications of ISO for the smaller end diameter of the cup and contact angle. The cone and cup assemblies are internationally interchangeable. The bearing number formulation, which is different than that for past metric design, is as follows:

Inch Design Tapered Roller Bearings
Besides metric design tapered roller bearings, there are also inch design bearings. For the cone assemblies and cups of inch design bearings, except four-row tapered roller bearings, the bearing numbers are approximately formulated as follows:

Double-row Tapered Roller Bearings
Design and Feadtured of Combinations of Tapered Roller Bearings

   
 
A 9970
A 9941
A 9798
A 8967
A 8898
A 8897
A 8819
772
766
760
759
752
749
742
68712
687
68450
683
681
67391
67322
672
665 A
665
663/Q
663
6581 X
6580
6535
653/Q
653
652
64700
6461 A
64450
6420
598/Q
598
594/Q
594 A
594
593/Q
593
592 A
580/Q
580
5760
572/Q
572
56650
56425
560
555 S
552 A
537/Q
3994
3984
3982
39590
39585
39580
39520
395 A
394 A
3920
387 AS
387 A
382 S
382 A
382
3782
3780/Q
3780
3720/Q
3720
365973
365442
365439
365419
365208
364495
362061
362060
354278
353162
353153
353115
3525/Q
33472
33462
33287
33275
332347
33220
331257
33122
33030
33024
33022
33014
32960
32944
32940
32938
32936
32934
32928
32926
32924
32322

Total 3581 records7 NO.[1] [2] [3] [4] [5] [6] [7] [8] page 8


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