Thrust ball bearings can handle loads in the axial direction only. Both washers contain raceways for the balls.
Thrust ball bearings are available as both single and bidirectional types
The bidirectional thrust bearing incorporates a third washer and an additional set of balls.
This center washer is located in the axial direction by a shaft shoulder and sleeve.
Thrust ball bearings are divided into single and double direction types. The former is able to accommodate
axial load in one direction, while the latter is able to accommodate it in both directions.
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