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
51122 110 145 0 25 - - 1.05
51124 120 155 0 25 - - 1.15
51126 130 170 0 30 - - 1.85
51128 140 180 0 31 - - 2.05
51200 10 26 0 11 - - 0.03
51201 12 28 0 11 - - 0.03
51202 15 32 0 12 - - 0.04
51203 17 35 0 12 - - 0.05
51204 20 40 0 14 - - 0.08
51205 25 47 0 15 - - 0.11
51206 30 52 0 16 - - 0.13
51207 35 62 0 18 - - 0.22
51208 40 68 0 19 - - 0.27
51209 45 73 0 20 - - 0.32
51210 50 78 0 22 - - 0.37
51211 55 90 0 25 - - 0.59
51212 60 95 0 26 - - 0.65
51213 65 100 0 27 - - 0.78
51214 70 105 0 27 - - 0.79
51215 75 110 0 27 - - 0.83