Machine Design
The function of the washer is to

Fill up the axial gap
Provide bearing area
Provide cushioning effect
Absorb shocks and vibrations

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Machine Design
Tapered roller bearings can take

Axial load only
Both radial and axial loads and the ratio of these being less than unity
Radial load only
Both radial and axial loads and the ratio of these being greater than unity

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Machine Design
Slenderness ratio is the ratio of

Effective length of column to least radius of gyration of the column
Maximum size of column to minimum size of column
Effective length of column to width of column
Width of column to depth of column

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