Claims
- 1. A compound ball bearing comprising:
- a bearing assembly including a spindle (1), a sleeve (2) surrounding said spindle (1) and a double-row of balls (5), (9),
- said spindle being a stepped spindle (1) having a large diameter portion (1a) and a small diameter portion (1b),
- said double-row of balls comprises a first row of balls (5) and a second row of balls (9),
- said balls (9) of the first row being provided between an outer race 7 formed on an inner ring (6) fitted on said small diameter portion (1b) of said spindle (1) and a corresponding first inner race (8) formed in said sleeve (2),
- said balls (5) of said second row being provided between an outer race (3) formed on said large diameter portion (1a) of said spindle (1) and a corresponding second inner race (4) formed in said sleeve (2),
- said spindle (1) being integrally formed as a one-piece unit with a base (16) of a motor.
- 2. The compound ball bearing of claim 1, wherein said base is a stationary part of the motor and said spindle is integrally formed therewith, said spindle being stationary and said sleeve mounted in rotational relationship with respect to said spindle.
- 3. The compound ball bearing of claim 2, wherein said sleeve surrounds said spindle.
- 4. The compound ball bearing of claim 1, wherein said first inner race (8) and said second inner race (4) are each directly formed in said sleeve (2).
Priority Claims (2)
Number |
Date |
Country |
Kind |
293858 |
Oct 1992 |
JPX |
|
323646 |
Nov 1992 |
JPX |
|
Parent Case Info
This application is a continuation-in-part of application Ser. No. 08/131,400, filed Oct. 5, 1993, now U.S. Pat. No. 5,560,717, the contents of which are hereby incorporated by reference.
US Referenced Citations (10)
Foreign Referenced Citations (2)
Number |
Date |
Country |
3224448 |
Feb 1983 |
DEX |
3540363 |
Jun 1986 |
DEX |
Non-Patent Literature Citations (3)
Entry |
Japanese Abstract No. 58-160322, vol. 9, No. 182 (p. 376) (1905), Jul. 27, 1985. |
Japanese Abstract No. 63255869, vol. 13, No. 70 (p. 829), Feb. 2, 1989. |
Japanese Abstract No. 61-224836, Oct. 6, 1986, Kazuaki Nakamaori. |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
131400 |
Oct 1993 |
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