BEARING AND REDUCTION GEAR

Japanese Patent JP2023022891

A

To provide a bearing which allows size reduction of a device having a plurality of different rotating shafts in an axial direction.SOLUTION: A bearing comprises: a first bearing ring having a first raceway surface at an internal peripheral face; a second bearing ring which has a second raceway surface opposing the first raceway surface in a radial direction at an external peripheral face, in which a plurality of first penetration holes are formed while being aligned in a circumferential direction, and which has a plurality of third raceway surfaces surrounding the plurality of first penetration holes; a plurality of third bearing rings having fourth raceway surfaces opposing the third raceway surfaces in the radial direction at external peripheral faces; a plurality of first rolling bodies arranged on a circular ring-shaped raceway along the first raceway surface and the second raceway surface; and a plurality of second rolling bodies arranged on a circular ring-shaped raceway along the third raceway surface and the fourth raceway surface. The first bearing ring includes a pair of circular ring-shaped first steel plates which are arranged while being superimposed on one another in an axial direction. The second bearing ring includes a pair of circular ring-shaped second steel plates which are arranged while being superimposed on one another in the axial direction. The third bearing ring includes a pair of circular ring-shaped third steel plates which are arranged while being superimposed on one another in the axial direction.SELECTED DRAWING: Figure 4

TSURUTA KENTARO

JP2021127952A

February 16, 2023

August 04, 2021

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NIPPON THOMPSON CO LTD

F16C33/60; F16C19/16; F16H1/28

Shuhei Kitano
Katsuya Tanaka
Southern history
Satoshi Aoki

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