Title:
ROLLER BEARING
Document Type and Number:
WIPO Patent Application WO/2008/044332
Kind Code:
A1
Abstract:
A roller bearing in which contact surface pressure between an inner ring or a shaft
and rollers and that between an outer ring and the rollers are kept low to reduce
vibration and noise and in which axial movement of a retainer by a skew of the rollers
and a tilt between the outer ring and the inner ring or the shaft are prevented to
extend the rolling fatigue life of the bearing. The roller bearing has a ring-shaped
retainer (3) having a pair of annular sections (5) and circumferentially arranged
columns (6) that connect the annular sections (5) and form a pocket (3a) between
each adjacent pair of the columns, and also has the rollers (2) retained in the
pockets (3a) of the retainer (3). The rollers (2) are in rolling contact with
an inner ring-side peripheral surface (4a) that is the outer peripheral surface
of the inner ring or the shaft (4) and with an outer ring-side peripheral surface
(1a) of the outer ring (1). The annular sections (5) of the inner and outer peripheral
surfaces of the retainer (3) are made to be in sliding contact with the inner ring-side
peripheral surface (4a) and the outer ring-side peripheral surface (1a) to function
as slide bearings. A retaining ring (7A) for limiting axial movement of the retainer
(3) is provided on the outer ring (1), or the annular sections (5) of the retainer
(3), or the inner ring, or the shaft (4).
Inventors:
KAWASE TATSUO (JP)
TAMADA KENJI (JP)
TAMADA KENJI (JP)
Application Number:
PCT/JP2007/001082
Publication Date:
April 17, 2008
Filing Date:
October 04, 2007
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
KAWASE TATSUO (JP)
TAMADA KENJI (JP)
KAWASE TATSUO (JP)
TAMADA KENJI (JP)
International Classes:
F16C19/26; F16C9/02
Foreign References:
| JPH0610628U | 1994-02-10 | |||
| JPH06294418A | 1994-10-21 |
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (10-2 Edobori 1-chome, Nishi-ku, Osaka-sh, Osaka 02, JP)
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