What is Thrust ball bearings ?

[zhuyu]

Thrust ball bearings are classified into those with flat seats or aligning seats depending on the shape of the outer ring seat (housing washer). They can sustain axial loads but no radial loads. For Single-Direction Thrust Ball Bearings, pressed steel cages and machined brass cages are usually used The cages in Double- Direction Thrust Ball Bearings are the same as those in Single-Direction Thrust Ball Bearings of the same diameter series.
Both washers contain grooves for the balls. Thrust ball bearings are of two types: single type which can support axial loads in only one direction and double type that can support bi-directional loads.
The central washer of double type thrust ball bearing is located in an axial direction by a shaft shoulder and sleeve. Thrust Ball bearings are not suitable for high-speed rotation since lubri~ant is expelled by centrifugal force.
Bearings whose housing washer back face is spherical (with a spherical back face or aligning seat washer) are designed with a self-aligning capability and can accommodate the effects of inaccurate mounting.推力球

[TamiPaulus]

For heavy vehicles the ball bearing fails most frequently. To avoid this people should check regularly, allow to run in clean lube. Also people should check oil level and discoloring of hub cap window, abnormal tire wear.