Retainer and rolling bearing with same
AssigneeNsk Ltd.
InventorYoshifumi Sugita
Life of this patent
Estimating the term…
Abstract
A retainer of an outer ring guide type, includes a retainer guide surface, a relief surface (edge relief groove), and an axial groove. The retainer guide surface is provided on at least one axial end portion of a retainer outer diameter surface and is guided by the outer ring. The relief surface is formed on the retainer outer diameter surface along a circumferential direction, located on an axial center side with respect to the retainer guide surface, and has an outer diameter smaller than that of the retainer guide surface. The axial groove extends from the pockets to an axial end on the retainer outer diameter surface, forms an axial step portion by axially traversing the retainer guide surface, and has a groove bottom on a radial inner side with respect to the relief surface.
Claims7
A retainer of an outer ring guide type, applied to a rolling bearing including an inner ring, an outer ring, and a plurality of rolling elements disposed between the outer ring and the inner ring, and has a plurality of pockets in which the rolling elements are held, the retainer comprising:
- a retainer guide surface that is provided on at least one axial end portion of a retainer outer diameter surface of the retainer and is guided by the outer ring;
- a relief surface that is formed on the retainer outer diameter surface along a circumferential direction, located on an axial center side with respect to the retainer guide surface, and has an outer diameter smaller than that of the retainer guide surface;
- and
- an axial groove that extends from the pockets to an axial end on the retainer outer diameter surface, forms an axial step portion by axially traversing the retainer guide surface, and has a groove bottom located radially inward relative to the relief surface.
Dependencies are inferred from the claim text.