Title:
GREASE COMPOSITION AND ROLLER BEARING FOR MACHINE TOOL
Document Type and Number:
Japanese Patent JP2013035916
Kind Code:
A
Abstract:
To provide a maintenance-free roller bearing for a machine tool, capable of maintaining a good rotation even under a high-speed high-load operating conditions exceeding dmN million, and to provide a grease composition suitable for the roller bearing for a machine tool.
There is provided a grease composition using as a thickener at least either one of an aromatic urea compound and an alicyclic urea compound and having a consistency equivalent to NLGI Nos. 3-4. Also, a roller bearing for a machine tool entraps the grease composition and is usable for use over dmN million.
Inventors:
TODA YUJIRO
OIKAWA ERI
OIKAWA ERI
Application Number:
JP2011171786A
Publication Date:
February 21, 2013
Filing Date:
August 05, 2011
Export Citation:
Assignee:
NSK LTD
International Classes:
C10M169/02; C10M101/02; C10M105/04; C10M105/06; C10M105/18; C10M105/38; C10M115/08; C10M135/18; F16C33/66; C10N10/04; C10N20/02; C10N30/06; C10N40/02; C10N50/10
Attorney, Agent or Firm:
Shohei Oguri
Hironori Honda
Toshimitsu Ichikawa
Hironori Honda
Toshimitsu Ichikawa