Title:
GREASE COMPOSITION AND ROLLING DEVICE
Document Type and Number:
Japanese Patent JP2004359823
Kind Code:
A
Abstract:
To provide a grease composition which imparts an excellent acoustic lifetime, torque performances and fretting resistance performances to a rolling device, and to provide the rolling device excellent in acoustic lifetime, torque performances and fretting resistance performances.
The grease composition G, which comprises a polyol ester oil having kinematic viscosity at 40°C of 15-60 mm2/s and lithium stearate, is filled in a space part of a deep groove ball bearing 1. The content X of lithium stearate is 15-30 mass% based on the whole grease composition G. The worked penetration of the grease composition G satisfies both of the requirements; at least 260 but at most 330, and at least 335-3X but at most 395-3X.
Inventors:
YAMAZAKI MASAHIKO
SUGIMORI YOICHIRO
KAMIMURA HIDEHIRO
MIYAJIMA HIROTOSHI
NAKATANI SHINYA
NAKA MICHIHARU
SUGIMORI YOICHIRO
KAMIMURA HIDEHIRO
MIYAJIMA HIROTOSHI
NAKATANI SHINYA
NAKA MICHIHARU
Application Number:
JP2003159948A
Publication Date:
December 24, 2004
Filing Date:
June 04, 2003
Export Citation:
Assignee:
NSK LTD
International Classes:
F16C33/66; C10M105/38; C10M117/02; C10M135/18; C10M137/10; C10M169/02; C10N10/02; C10N10/04; C10N10/12; C10N20/02; C10N20/06; C10N30/00; C10N30/06; C10N40/02; C10N50/10; (IPC1-7): C10M169/02; C10M105/38; C10M117/02; C10M135/18; C10M137/10; F16C33/66
Attorney, Agent or Firm:
Tetsuya Mori
Yoshiaki Naito
Cui Shu Tetsu
Yoshiaki Naito
Cui Shu Tetsu