Rolling bearing unit

Details Rolling bearing unit Rolling bearing unit

1997-08-20

1998-07-21

Hannon, Thomas R.

Bearings

Rotary bearing

Antifriction bearing

384492, 384516, F16C 3358, F16C 3332

Patent

active

057825637

ABSTRACT:
A rolling bearing unit having undulation on the rolling surfaces of the rolling elements where the total value of the wave components having an even number of waves per circumference is smaller than the total value of the wave components having an odd number of waves per circumference, or having undulation on the inner ring raceway and outer ring raceway, where the undulation on at least one of the raceway is conditioned such that the maximum waviness amplitude among (nZ), (nZ+1) and (nZ -1) waves per circumference is smaller than the maximum waviness amplitude among (nZ+2) and more waves per circumference, where n is a positive integer and Z is the number of rolling elements, thereby making it possible to obtain a low-cost, high-performance rolling bearing in which the vibration characteristics of the rolling bearing are improved without having to increase the precision required for manufacturing the rolling elements and inner ring raceway and outer ring raceways.

REFERENCES:
patent: 3471913 (1969-10-01), Scott
patent: 5396135 (1995-03-01), Iwazaki et al.
patent: 5411336 (1995-05-01), Takemura et al.
patent: 5443317 (1995-08-01), Momono et al.
FP Wardle; Vibration Forces Produced by Waviness of the surfaces of thrust loaded ball bearings, Part 1; 1988, vol. 202, No. C5 pp. 305-312.

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