Spherical Roller Bearing
Product Specification

A spherical bearing is a bearing that permits angular rotation about a central point in two orthogonal directions (usually within a specified angular limit based on the bearing geometry). Typically these bearings support a rotating shaft in the [bore] of the inner ring that must move not only rotationally, but also at an angle.

Spherical bearings can be of a hydrostatic or mechanical construction. A spherical bearing by itself consists of an outer ring and an inner ring and a locking feature that makes the inner ring captive within the outer ring in the axial direction only. The outer surface of the inner ring and the inner surface of the outer ring are spherical and are collectively considered the raceway and they slide against each other, either with a lubricant, a maintenance-free or they incorporate a rolling element such as a race of ball-bearings, allowing lower friction. Spherical bearings are used in countless applications, wherever rotational motion must be allowed to change the alignment of its rotation axis.

Bearing No. d D T B C R Mass
21306 30.000 72.000 - 19.000 - - 0.380
21307 35.000 80.000 - 21.000 - - 0.510
21308 40.000 90.000 - 23.000 - - 0.710
21309 45.000 100.000 - 25.000 - - 0.950
21310 50.000 110.000 - 27.000 - - 1.200
21311 55.000 120.000 - 29.000 - - 1.600
21312 60.000 130.000 - 31.000 - - 1.950
21313 65.000 140.000 - 33.000 - - 2.450
21314 70.000 150.000 - 35.000 - - 3.000
21315 75.000 160.000 - 37.000 - - 3.550
21316 80.000 170.000 - 39.000 - - 4.200
21317 85.000 180.000 - 41.000 - - 5.000
21318 90.000 190.000 - 43.000 - - 5.800
22205 25.000 52.000 - 18.000 - - 0.180
22206 30.000 62.000 - 20.000 - - 0.280
22207 35.000 72.000 - 23.000 - - 0.430
22208 40.000 80.000 - 23.000 - - 0.520
22209 45.000 85.000 - 23.000 - - 0.560
22210 50.000 90.000 - 23.000 - - 0.600
22211 55.000 100.000 - 25.000 - - 0.820