A comprehensive engineers' reference source for radial ball bearings and thrust ball bearing



Bearing land diameters are given by the maximum outside diameter of the inner ring (li) and the minimum inside diameter of the outer ring (lo). Bearing land diameters are given in the individual bearing tables.

Inner land diameter = li Outer land diameter = lo

Bearing pitch diameter dp is the diameter of the circle that the center point of a ball travels during rotation of a bearing.

Bearing pitch diameter dp~   
li + lo
Note: For pitch diameter calculations, use the land diameter values from the open (unshielded) bearing tables.

Use Bearing Tables (open bearing) for individual land dimater values.

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