Thrust / Jack Bearings
Product Specification

A thrust bearing is a particular type of rotary bearing. Like other rotary bearings they permit rotation between parts, but they are designed to support a high axial load while doing this (parallel to the shaft). Different kinds of thrust bearings are used to support different amounts of axial load. Thrust ball bearings are used in applications that use little axial load, where a ring supports ball bearings. Spherical roller thrust bearings are used in applications that require high axial load, and can also support shafts that are out of alignment. Thrust bearings are used in higher speed applications that require oil lubrication, such as in the automotive and aerospace industries. Generally, thrust bearings are composed of two washers (raceways) in which those for ball bearings may be grooved, and the rolling elements.
Thrust Bearings Product Line

Thrust bearings come in several varieties including:

  • Ball Thrust Bearings - Composed of ball bearings supported in a ring, can be used in lower thrust applications where there is little radial load. Washers may be flat or grooved. Miniature thrust bearings starting with bores as small as 2 mm but as large as 340 mm.
  • Roller Thrust Bearings - Composed of cylindrical rolling elements, Roller thrust bearings have higher load carrying capacities then equally sized ball thrust bearings. Washers are typically flat (not grooved). Small roller thrust bearings start at 45 mm bores.
Bearing No. d D T B C R Mass
51216 80 115 0 28 - - 0.91
51217 85 125 0 31 - - 1.2
51218 90 135 0 35 - - 1.7
51220 100 150 0 38 - - 2.2
51222 110 160 0 38 - - 2.4
51224 120 170 0 39 - - 2.65
51226 130 190 0 45 - - 4
51228 140 200 0 46 - - 4.35
51305 25 52 0 18 - - 0.12
51306 30 60 0 21 - - 0.26
51307 35 68 0 24 - - 0.39
51308 40 78 0 26 - - 0.53
51309 45 85 0 28 - - 0.66
51310 50 95 0 31 - - 0.94
51311 55 105 0 35 - - 1.3
51312 60 110 0 35 - - 1.35
51313 65 115 0 36 - - 1.5
51314 70 125 0 40 - - 2
51315 75 135 0 44 - - 2.6
51316 80 140 0 44 - - 2.7