Title:
CROSS ROLLER BEARING
Document Type and Number:
Japanese Patent JP2021011918
Kind Code:
A
Abstract:
To provide a cross roller bearing capable of supplying grease from a plug fitted to a roller insertion hole of an outer ring.SOLUTION: In a cross roller bearing 1 in which a plurality of rollers 4 are disposed between two inclined raceway surfaces 2a of an outer ring 2 having a roller insertion hole 2b and two inclined raceway surfaces 3a of an inner ring 3 in a manner that an inclination direction is changed in a circumferential direction, two inclined raceway surfaces 5d are formed inside of a plug 5 fitted to the roller insertion hole 2b, and the outer ring 2 and the inner ring 3 are integrally formed, a relief groove portion 2d is formed between two inclined raceway surfaces 2a of the outer ring 2, a recessed portion 5c is formed between two inclined raceway surfaces 5d of the plug 5, a grease supply hole 5b connected to the recessed portion 5c is formed on the plug 5, and a passage 11 communicated to the grease supply hole 5b is formed inside of the relief groove portion 2d and the recessed portion 5c by a cover member 10 covering openings of the relief groove portion 2d and the recessed portion 5c.SELECTED DRAWING: Figure 2
Inventors:
KAWAKAMI YUICHIRO
KATABUCHI KEITA
KATABUCHI KEITA
Application Number:
JP2019126156A
Publication Date:
February 04, 2021
Filing Date:
July 05, 2019
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F16C33/66; F16C19/36; F16C33/58; F16C43/06
Attorney, Agent or Firm:
Naoya Kamata
Bunji Kamada
Yaichiro Nakatani
Bunji Kamada
Yaichiro Nakatani