Title:
FOUR-POINT CONTACT BALL BEARING AND CAGE FOR BALL BEARING USING THE SAME
Document Type and Number:
Japanese Patent JP2019173918
Kind Code:
A
Abstract:
To provide a four-point contact ball bearing in which a lubricant is stably supplied between balls and a pocket inner surface, and a cage for the ball bearing using the same.SOLUTION: A four-point contact ball bearing includes a cage 14 for retaining a plurality of balls 13 rolling between a raceway groove 15 of an outer ring 11 and a raceway groove 16 of an inner ring 12 axially divided into two at intervals in a circumferential direction, the balls 13 are kept into contact with an inner surface of the raceway groove 15 of the outer ring 11 and an inner surface of the raceway groove 16 of the inner ring 12 respectively at two places, the cage 14 has through holes 22, 23 communicated with an inner surface of a pocket 21 from axial outer end faces 18a, 19a of annular portions 18, 19 positioned at an axial outer side of a pillar portion 20, and the through holes 22, 23 are disposed in parallel with a tangential line to a rotating direction of the retainer 14, and formed with an inclination angle with respect to an axial direction.SELECTED DRAWING: Figure 1
Inventors:
YAMADA HIROAKI
Application Number:
JP2018064546A
Publication Date:
October 10, 2019
Filing Date:
March 29, 2018
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F16C33/66; F16C19/16; F16C33/38; F16C33/60
Attorney, Agent or Firm:
Naoya Kamata
Bunji Kamada
Yaichiro Nakatani
Bunji Kamada
Yaichiro Nakatani