Title:
BEARING AND SPEED REDUCER
Document Type and Number:
WIPO Patent Application WO/2023/013201
Kind Code:
A1
Abstract:
A bearing comprising: a first raceway ring having a first raceway surface on the inner peripheral surface; a second raceway ring which has a second raceway surface facing the first raceway surface in the radial direction on the outer peripheral surface, a plurality of first through holes formed side by side in the circumferential direction, and a plurality of third raceway surfaces surrounding the plurality of first through holes; a plurality of third raceway rings each having a fourth raceway surface facing the third raceway surface in the radial direction on the outer peripheral surface; a plurality of first rolling elements arranged in a annular track along the first raceway surface and second raceway surface; and a plurality of second rolling elements arranged in a annular track along the third raceway surface and fourth raceway surface. The first raceway ring includes a pair of annular first steel plates disposed so as to be stacked on each other in the axial direction. The second raceway ring includes a pair of annular second steel plates disposed so as to be stacked on each other in the axial direction. The third raceway ring includes a pair of annular third steel plates disposed so as to be stacked on each other in the axial direction.
Inventors:
TSURUTA KENICHIRO (JP)
Application Number:
PCT/JP2022/020193
Publication Date:
February 09, 2023
Filing Date:
May 13, 2022
Export Citation:
Assignee:
NIPPON THOMPSON CO LTD (JP)
International Classes:
F16C19/54; F16C33/60; F16C33/62; F16H1/28
Domestic Patent References:
| WO2003050435A1 | 2003-06-19 | |||
| WO2021060489A1 | 2021-04-01 |
Foreign References:
| JP2507561Y2 | 1996-08-14 | |||
| CN110966370A | 2020-04-07 | |||
| CN212657187U | 2021-03-05 | |||
| JPS4922375U | 1974-02-25 |
Attorney, Agent or Firm:
KITANO Shuhei et al. (JP)
Download PDF: