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Rolling bearing for supporting spindle of machine tool, satisfies preset inequality involving radial and axial lengths of retainer and pitch circle diameter of each roller held by retainer
Rolling bearing for supporting spindle of machine tool, satisfies preset inequality involving radial and axial lengths of retainer and pitch circle diameter of each roller held by retainer
A retainer (14), made from resin, holds the rollers (13) between the outer ring (11) and the inner ring (12) of a rolling bearing (10). The retainer comprises of a pair of axially spaced annular portions joined by a columnar portion. Axial and radial lengths of a section of the annular portion and the pitch circle diameter of each roller satisfies a preset inequality. - An INDEPENDENT CLAIM is also included for a spindle apparatus for a machine tool.
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