Tapered roller bearing are bearing that can take large axial forces ( they are good ) as well as being able to sustain large radial forces.

The inner and outer ring raceways are segments of cones and the rollers are also made with a taper so that the conical surfaces of the raceways and the roller axes if projected, would all meet at a common point on the main axis of the bearing.

This conical geometry is used as it gives a larger contact patch, which permits greater loads to be carried than with spherical (ball) bearings, while the geometry means that the tangential speeds of the surfaces of each of the rollers are the same as their raceways along the whole length of the and no differential scrubbing occurs. When a roller slides rather than rolls, it can generate wear at the roller-to-race interface, i. e. The differences in surface speeds creates a scrubbing action. Wear will degenerate the close tolerances normally held in the bearing and can lead to other problems. Much closer to pure rolling can be achieved in a tapered roller bearing and this avoids rapid wear.

The rollers are guided by a flange on the inner ring. This stops the rollers from sliding out at high speed due to their momentum.

The larger the half angles of these cones the larger the axial force that the bearing can sustain.

Tapered roller bearings are separable and have the following components: Outer ring, inner ring, and roller assembly (containing the rollers and a cage). The non-separable inner ring and roller assembly is called the cone, and the outer ring is called the cup. Internal clearance is established during mounting by the axial position of the cone relative to the cup.

The series are below:

31306X2A/P6 32328
31307 32330
320/28 32332
320/28/YB2 32334/YA6
32005 32930X2A
32006 32932X2A
32006/P6XYB5 32934
32007 32934X2A
32008 32936X2A
32008X1WC 32938X2A
32204 32940X2A
32205 32944X2A
32205 32948X2A
32205/P6X 32952X2A
32206 32956X2A
32206 32960X2A
32206/YA8 352940X2-1
32207 3-GG-5006-03-S
32207 7526EY
32207 EE517060D/517117
32207/P5 EE738101DW/738172
32207/YA8 GG61/2
32304 H917840-90010
32305 HH234010
32306 HH234048/HH234010
32306 HM237510
32306 HM237542/HM237510
32307 HM252310
32307 HM252348/HM252310
32307 HM256810
32307.01 HM256849D/HM256810
32307.01 IR-HM133555
32307/HAP6X JHM522649/JHM522610
32307A/HAP5 JHM840449/JHM840410
32307A/HAP5 JM734410