Thrust Bearings are particular types of rotary bearings. Like other bearings they permit rotation between parts, but they are designed to support a high axial load while doing this.
Thrust bearings come in several varieties.
Thrust ball bearings, composed of ball bearings supported in a ring, can be used in low thrust applications where there is little axial load.
Cylindrical thrust roller bearings consist of small cylindrical rollers arranged flat with their axes pointing to the axis of the bearing. They give very good carrying capacity and are cheap, but tend to wear due to the differences in radial speed and friction which is higher than with ball bearings.
Tapered roller Thrust Bearings consist of small tapered rollers arranged so that their axes all converge at a point on the axis of the bearing. The length of the roller and the diameter of the wide and the narrow ends and the angle of rollers need to be carefully calculated to provide the correct taper so that each end of the roller rolls smoothly on the bearing face without skidding. These are the type most commonly used in automotive applications (to support the wheels of a motor car for example), where they are used in pairs to accommodate axial thrust in either direction, as well as radial loads. They can support rather larger thrust loads than the ball type due to the larger contact area, but are more expensive to manufacture.
Spherical roller Thrust Bearings consists of two rings and asymmetrical rollers of spherical shape. They can accommodate combined radial and axial loads and also accommodate misalignmet of the shafts. They are often used together with radial spherical roller bearings.
Ball Thrust Bearings, composed of ball bearings supported in a ring, can be used in low thrust applications where there is little radial load.
Roller Thrust Bearings consist of small cylindrical rollers arranged flat with their axes pointing to the axis of the bearing.
Thrust Bearings are used under purely axial loads. They are commonly used in aerospace, automotive and marine applications.
Here at Townsend Bearings we have a wide range of Thrust Bearings available in both metric and imperial sizes from stock. Ball Thrust Bearings consist of two precision chrome steel washers (rings) and a ball complement spaced by a bronze retainer. They can be supplied with or without radius ball grooves in the rings.
All of our catalogues are available to download in PDF format. To view our catalogues see links to the main Bearings and Bushes catalogue and main Thrust Bearings sections below.
Bearings, Plummer Blocks and Self Lube
Thrust Bearings Catalogue Sections
Thrust Bearings – Metric and Imperial