Title:
NEEDLE ROLLER BEARING, AND METHOD FOR MANUFACTURING THE SAME
Document Type and Number:
Japanese Patent JP2004183802
Kind Code:
A
Abstract:
To provide a needle roller bearing capable of restricting heat treatment deformation while securing prescribed hardness.
Steel material for forming at least one of an inner ring 2, an outer ring 4, and a needle roller 3 is quenched and hardened by atmospheric cooling. A surface layer part quenched and hardened has hardness of HV650 or more.
Inventors:
OKI TSUTOMU
MAEDA KIKUO
MAEDA KIKUO
Application Number:
JP2002352241A
Publication Date:
July 02, 2004
Filing Date:
December 04, 2002
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F16H53/06; F16C19/46; F16C33/34; F16C33/64; (IPC1-7): F16C19/46; F16C33/34; F16C33/64; F16H53/06
Attorney, Agent or Firm:
Kuro Fukami
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Hisato Noda
Masayuki Sakai
Seiichi Watanabe
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Hisato Noda
Masayuki Sakai
Seiichi Watanabe