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
32005 25.000 47.000 15.000 15.000 11.500 - 0.110
32006 30.000 55.000 17.000 17.000 13.000 - 0.170
32007 35.000 62.000 18.000 18.000 140.000 - 0.220
32008 40.000 68.000 19.000 19.000 14.500 - 0.270
32009 45.000 75.000 20.000 20.000 15.500 - 0.340
32010 50.000 80.000 20.000 20.000 15.500 - 0.370
32011 55.000 90.000 23.000 23.000 17.500 - 0.550
32012 60.000 95.000 23.000 23.000 17.500 - 0.590
32013 65.000 100.000 23.000 23.000 17.500 - 0.630
32014 70.000 110.000 25.000 25.000 19.000 - 0.840
32015 75.000 115.000 25.000 25.000 19.000 - 0.900
32016 80.000 125.000 29.000 29.000 22.000 - 1.300
32017 85.000 130.000 29.000 29.000 22.000 - 1.350
32018 90.000 140.000 32.000 32.000 24.000 - 1.750
32019 95.000 145.000 32.000 32.000 24.000 - 1.800
32020 100.000 150.000 32.000 32.000 24.000 - 1.900
32021 105.000 160.000 35.000 35.000 26.000 - 2.400
32022 110.000 170.000 38.000 38.000 29.000 - 3.050
32024 120.000 180.000 38.000 38.000 29.000 - 3.250
32026 130.000 200.000 45.000 45.000 34.000 - 4.950