Title:
DOUBLE-ROW ROLLER BEARING
Document Type and Number:
WIPO Patent Application WO/2020/013066
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a double-row roller bearing provided with a comb-shaped holder, in which the behavior of rollers rotating at high speed is stabilized, and heat generation or friction loss in the bearings is reduced. This double-row roller bearing is provided with: an outer race 1 having a raceway surface 1a on the inner surface; an inner race 2 having a raceway surface 2a on the outer surface; a plurality of rollers 3 arranged in two rows between the outer race 1 and the inner race 2; and a holder 4 for holding the rollers 3 that are arranged in an annular shape in each row. The holder 4 is composed of: an annular part 4a that is arranged between the two rows of rollers; and a plurality of pillar parts 4b that extend from the side surface of the annular part 4a and hold the rollers 3 in each row in a rollable manner. The minimum distance C between the end surfaces of the rollers in each row and the side surface of the annular part of the holder is less than 0.003×D+0.12 mm, where D is the maximum diameter of the roller.
Inventors:
AGATA SEIZOU (JP)
OZU TAKUYA (JP)
OZU TAKUYA (JP)
Application Number:
PCT/JP2019/026566
Publication Date:
January 16, 2020
Filing Date:
July 04, 2019
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16C33/49; F16C19/28; F16C23/08
Domestic Patent References:
| WO2010034282A1 | 2010-04-01 |
Foreign References:
| JPS60201113A | 1985-10-11 | |||
| JP2017078480A | 2017-04-27 | |||
| JP2008075758A | 2008-04-03 |
Attorney, Agent or Firm:
TORII Kazuhisa et al. (JP)
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