Roller bearing cage and method of producing the same

Details Roller bearing cage and method of producing the same Roller bearing cage and method of producing the same

2007-08-07

2007-08-07

Footland, Lenard A. (Department: 3682)

Bearings

Rotary bearing

Antifriction bearing

Reexamination Certificate

active

11055632

ABSTRACT:
A roller bearing cage is disclosed, which is provided inexpensively from basic minimum quantity of row material. The roller bearing cage is made with a production method using rolling operations, which is the absence of the formation of chips, while ensuring the strength and stiffness of the cage. A circular inside surface of the cage is made to give an advantage to the rolling operations. The circular inside surface is circularly recessed to have a concaved surface of just one radius of curvature R. A diametral dimension across diametrically opposing bottoms of the circular recess is made larger than the pitch circle distance P.C.D. Pillars of the cage have inside retainer lips, which are hard to make any engagement with their associated rollers, which might worsen the engine performance.

REFERENCES:
patent: 5540506 (1996-07-01), Yokota et al.
patent: 6196728 (2001-03-01), Wahler et al.
patent: 6767135 (2004-07-01), Yokota
patent: 8-219149 (1996-08-01), None
patent: 9-236130 (1997-09-01), None
patent: 9-242763 (1997-09-01), None

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