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US 5,007,747 AGranted
Radial roller bearing
AssigneeKoyo Seiko Co., Ltd.
InventorsMasamichi Takeuchi, Yasuo Asai
Life of this patent
Estimating the term…
Abstract
A radial roller bearing consisting of rings and rollers, either the rolling contact surface of each roller or the raceway surfaces of the rings or both are crowned, the amount of crowning which is defined as .DELTA.t/l i.e., the depth of crowning .DELTA.t to the effective roller length of l, is set to 0.0007 to 0.002, the ring has a rib at its one end, the end surface of each roller which makes contact with the rib is spherically convex, while the contacted surface of the rib is spherically concave.
Claims5
A radial roller bearing comprising:
- a inner ring;
- a outer ring;
- and
- a plurality of rollers disposed between said rings and a retainer for said rollers;
- at least one surface of raceway surfaces of said inner ring, a raceway surface of said outer ring and rolling contact surfaces of said rollers being crowned so that the amount of crowning is 0.0007 to 0.002;
- one end surface of each roller being formed spherically convex;
- at least one of elements of said inner ring and said outer ring being provided with a rib at its one end opposed to a convex end surface of each roller, said convex end surface of each roller being in contact with said rib, said contact surface of said rib being formed spherically concave in contact with said convex end surface of each roller.
4 more elements
Dependencies are inferred from the claim text.