51209 bearing is Complete Set of Thrust Ball Bearing Assembly with 2 Steel Grooved Washers and pre-lubricated with light oil to allow them to be ready to use upon arrival.
Sizes: ID 45mm x OD 73mm x W 20mm
Interchange : 51209, 51209A, 51209(X)
The thrust ball bearings are typically installed between two surfaces to accommodate and manage axial loads in mechanical systems.
These two surfaces are usually the two bearing washers that come with the thrust ball bearing assembly.
Here's how they work:
1- Upper Washer (Housing Washer): This washer is typically mounted to a stationary part of the machinery or system.
It provides a stable surface against which the axial load is applied.
The upper washer also helps to retain the balls within the bearing assembly.
2- Lower Washer (Shaft Washer): The lower washer is attached to the rotating component, such as a shaft or spindle.
This component is subjected to axial forces that need to be supported and managed.
The lower washer is in contact with the thrust ball bearing's set of balls.