Linear motion bearing

摘要

A linear motion ball bearing having an outer sleeve and a cylindrical ball-guide cage with endless rows of balls axially movable on a central shaft, the cage defining for each row a main guideway for loaded balls engaged by a race plate and a return guideway for unloaded balls, this race plate situated partially in a recess extending radially inward in the cage and partially in a depression extending radially outward in an adjacent portion of the bore surface of the outer sleeve. During assembly of the bearing the race plates are movable radially inward when the cage is inserted axially into the bore of the outer sleeve, and the race plates are moved radially outward into the depressions of the sleeve when balls are inserted in the cage's guideways.