DOUBLE-ROW BALL BEARING AND BEARING DEVICE FOR SUPPORTING PINION SHAFT

Title:

DOUBLE-ROW BALL BEARING AND BEARING DEVICE FOR SUPPORTING PINION SHAFT

Document Type and Number:

WIPO Patent Application WO/2003/089798

Kind Code:

A1

Abstract:

A double-row ball bearing rotatably supports a pinion shaft having a pinion gear at its one end. The double-row ball bearing includes an outer ring member having a large diameter raceway surface and a small diameter raceway surface; an inner ring member having a large diameter raceway surface and a small diameter raceway surface corresponding respectively to the large diameter raceway surface and the small diameter raceway surface of the outer ring member; a large diameter-side ball row interposed between both large diameter raceway surfaces; a small diameter-side ball row interposed between both small diameter raceway surfaces; a large diameter-side retainer for retaining the large diameter-side ball row; and a small diameter-side retainer for retaining the small diameter-side ball row. Of both ball rows, the ball row, opposed to the pinion gear receives the load before the pinion gear-side ball row receives it.

Inventors:

FUKUDA TOSHIRO (JP)
UEDA HIDEO (JP)
KAWAGUCHI TOSHIHIRO (JP)
YOKOTA KUNIHIKO (JP)
KAWAMURA MOTOSHI (JP)
AKIYAMA MUNEYASU (JP)
NAKASHITA TOMONORI (JP)

Application Number:

PCT/JP2003/004907

Publication Date:

October 30, 2003

Filing Date:

April 17, 2003

Export Citation:

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Assignee:

KOYO SEIKO CO (JP)
FUKUDA TOSHIRO (JP)
UEDA HIDEO (JP)
KAWAGUCHI TOSHIHIRO (JP)
YOKOTA KUNIHIKO (JP)
KAWAMURA MOTOSHI (JP)
AKIYAMA MUNEYASU (JP)
NAKASHITA TOMONORI (JP)

International Classes:

F16C19/18; F16C19/54; F16C25/06; F16C33/58; F16C35/06; F16H1/04; F16H57/037; F16H57/038; F16H57/039; F16H57/04; (IPC1-7): F16C19/18; F16C19/54; F16H1/04

Domestic Patent References:

WO1993017251A1

1993-09-02

Foreign References:

DE19839481A1	2000-03-02
JPH0566327U	1993-09-03

Other References: