Title:
rolling -- the maintenance machine for bearings -- and -- rolling -- a bearing
Document Type and Number:
Japanese Patent JP6114007
Kind Code:
B2
Abstract:
It is an object of the present invention to provide a cage for a rolling bearing having a film, formed on a surface thereof, which wears little over a long period of time from an initial stage of sliding contact between the film and rolling elements as well as other members and does not peel off the surface of a base material of the cage or dissolve in lubricating oil containing a sulfur-based additive and a rolling bearing having the cage. A cage (2) retains needle rollers (3) which are rolling elements of a needle rolling bearing (1). Of an entire outer surface of the cage (2), a tin alloy film consisting of tin and a metal other than the tin is formed on at least a sliding-contact surface of the cage (2) to be subjected to sliding contact with the needle rollers (3) and a sliding-contact surface thereof to be subjected to sliding contact with other members. The metal other than the tin has a lower surface free energy than iron. In the tin alloy film, as a weight ratio (wt%) between the tin and the metal other than the tin, (tin : metal other than tin) = (65:35) to (95:5).
Inventors:
Youji Sato
Akemi Tada
Hidenobu Mikami
Akemi Tada
Hidenobu Mikami
Application Number:
JP2012246550A
Publication Date:
April 12, 2017
Filing Date:
November 08, 2012
Export Citation:
Assignee:
ntn corporation
International Classes:
F16C33/46; C23C26/00; C25D21/12; F16C9/04; F16C19/26; F16C19/46
Domestic Patent References:
| JP2010002034A |
Foreign References:
| WO2007010982A1 | ||||
| WO2008133194A1 |
Attorney, Agent or Firm:
Wake Manipulation
Wake Hikari
Wake Hikari