To provide a tandem type double row angular contact ball bearing capable of preventing running-on to the shoulder of a ball (a rolling body), by enhancing axial rigidity.
This tandem type double row angular contact ball bearing has an inner race 12 having raceway surfaces 11a and 11b of double rows, an outer race 14 having raceway surfaces 13a and 13b of double rows corresponding to the raceway surfaces 11a and 11b of the inner race 12, and ball groups 15 and 16 of double rows interposed with respectively different pitch circle diameters between the raceway surfaces 11a, 11b, 13a and 13b of the respective rows of the inner race 12 and the outer race 14. A large diameter side contact angle and a small diameter side contact angle are set to 25 to 45. Assuming a ball diameter of a ball as DW, a groove curvature diameter of the raceway surfaces of the inner race as Di and a groove curvature diameter of the raceway surfaces of the outer race as Do, 1.04DWDi1.06DW is realized, and 1.08DWDo1.10DW is realized.
| JP2005265094A | 2005-09-29 | |||
| JP2004169890A | 2004-06-17 | |||
| JP2001163231A | 2001-06-19 | |||
| JP2004308792A | 2004-11-04 |
| WO2005088144A1 | 2005-09-22 |
Hideka Tanaka
Yoshiyuki Shiraishi
Kunihiko Shiromura
Tsuyoshi Kumano