Title:
ANGULAR BALL BEARING
Document Type and Number:
WIPO Patent Application WO/2022/196421
Kind Code:
A1
Abstract:
The present invention provides an angular ball bearing having a plurality of balls (3) interposed between trajectory surfaces (1a, 2a) of an inner race (1) and an outer race (2), the balls (3) being retained in pockets (Pt) provided at a plurality of locations in a circumferential direction of a cylindrical retainer (4). The ratio of a ball-to-ball distance (Pd) to a diameter (Da) of the ball (3) is between 0.16 and 0.35 inclusive, the ball-to-ball distance (Pd) being calculated by subtracting the diameter (Da) of the ball (3) from a distance (Pc) between the centers of adjacent balls (3,3). Moreover, the ratio of an inner race groove curvature (Ri) to an outer race groove curvature (Ro) is between 0.97 and 0.99 inclusive. The inner race groove curvature (Ri) is calculated by dividing a diameter (Di) of a groove (1g) of the trajectory surface (1a) of the inner race (1) by the diameter (Da) of the ball (3), and the outer race groove curvature (Ro) is calculated by dividing a diameter (Do) of a groove (2g) of the trajectory surface (2a) of the outer race (2) by the diameter (Da) of the ball (3).
Inventors:
TAKEGAHANA JIN (JP)
KOYAMA MINEO (JP)
KOYAMA MINEO (JP)
Application Number:
PCT/JP2022/009839
Publication Date:
September 22, 2022
Filing Date:
March 08, 2022
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
B23B19/02; F16C19/16; F16C33/38; F16C33/58; F16C33/62
Foreign References:
| JP2020153378A | 2020-09-24 | |||
| JP2011007288A | 2011-01-13 | |||
| JP2002048144A | 2002-02-15 |
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (JP)
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