Taper Roller Bearing
Product Specification

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 contact patch 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.

Bearing No. d D T B C R Mass
32222 110.000 200.000 56.000 53.000 46.000 - 7.100
32224 120.000 215.000 61.500 58.000 50.000 - 9.150
32226 130.000 230.000 67.750 64.000 54.000 - 11.500
32228 140.000 250.000 71.750 68.000 58.000 - 14.500
32230 150.000 270.000 77.000 73.000 60.000 - 17.890
32305 25.000 62.000 25.250 24.000 20.000 - 0.360
32306 30.000 72.000 28.750 27.000 23.000 - 0.550
32307 35.000 80.000 32.750 31.000 25.000 - 0.730
32308 40.000 90.000 35.250 33.000 27.000 - 1.000
32309 45.000 100.000 38.250 36.000 30.000 - 1.350
32310 50.000 110.000 42.250 40.000 33.000 - 1.800
32311 55.000 120.000 45.500 43.000 35.000 - 2.300
32312 60.000 130.000 48.500 46.000 37.000 - 2.850
32313 65.000 140.000 51.000 48.000 39.000 - 3.350
32314 70.000 150.000 54.000 51.000 42.000 - 4.300
32315 75.000 160.000 58.000 55.000 45.000 - 5.200
32316 80.000 170.000 61.500 58.000 48.000 - 6.200
32317 85.000 180.000 63.500 60.000 49.000 - 6.850
32924 120.000 165.000 29.000 27.000 23.000 - 1.624
33005 25.000 47.000 17.000 17.000 14.000 - 0.131