Title:
SLEWING BEARING
Document Type and Number:
Japanese Patent JP2019203540
Kind Code:
A
Abstract:
To provide a slewing bearing which can prevent a torque variation caused by meeting and parting of rolling elements while suppressing wear caused by a slide with an inner ring and an outer ring by using a spacer which is easily formed of a resin.SOLUTION: In a slewing bearing (B) which comprises: an outer ring (3) in which an outer ring raceway groove (3a) is formed; an inner ring (1) in which an inner ring raceway groove (1a) is formed; a plurality of balls (5) interposed between the outer ring raceway groove (3a) and the inner ring raceway groove (1a); and a plurality of spacers (7) interposed between the plurality of balls (5), at least one spacer out of the plurality of spacers (7) is formed as an elastic spacer (7B) having a first spacer piece (13) in contact with one ball out of the balls (5) at both sides, a second spacer piece (15) in contact with the other ball, and an elastic body (17) interposed between the first spacer piece (13) and the second spacer piece (15) so as to be elongated and contracted in an opposing direction (X) of both the spacer pieces (13, 15).SELECTED DRAWING: Figure 2
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Inventors:
NAKAJO SHINYA
Application Number:
JP2018098017A
Publication Date:
November 28, 2019
Filing Date:
May 22, 2018
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F16C33/374; F16C19/18; F16C33/372
Attorney, Agent or Firm:
Masashi Noda
Shuji Sugimoto
Shuji Sugimoto