Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
THRUST NEEDLE ROLLER BEARING
Document Type and Number:
Japanese Patent JP2004190778
Kind Code:
A
Abstract:

To provide a thrust needle roller bearing allowing an increase in lubrication oil passing property and an increase in the durability of the bearing even if the bearing is used in a specific use condition where an eccentric amount is large.

This thrust needle roller bearing 1 comprises a plurality of needle rollers 2 and two sheets of cages 3 and 4. The needle rollers 2 are vertically held by roller holding parts 5a and 6a formed in a plurality of pockets 5 and 6 which are slightly longer than the length of the needle rollers 2 in a radial direction. The radial length La of the roller holding parts 5a and 6a is made shorter than the length L of the needle rollers 2 and, by bending, both vertical thicknesses T1 and T2 in the radial outer and inner portions are formed thinner than the vertical thickness T0 of the roller holding parts 5a and 6a. The outer and inner portions of two sheets of cages 3 and 4 are vertically overlapped with each other, and both the radial outermost end part and the radial innermost end part are joined to each other by plastic deformation.


Inventors:
OISHI SHINJI
OBAYASHI KOSUKE
Application Number:
JP2002358918A
Publication Date:
July 08, 2004
Filing Date:
December 11, 2002
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F16C33/48; F16C19/48; F16C33/34; (IPC1-7): F16C33/48; F16C19/48; F16C33/34
Attorney, Agent or Firm:
Takao Koshikawa