Title:
ROLLING SUPPORT DEVICE AND METHOD OF MANUFACTURING COMPONENT OF THE SAME
Document Type and Number:
Japanese Patent JP2007046759
Kind Code:
A
Abstract:
To provide a rolling support device having excellent durability even when used under severe lubricating conditions.
A roller 6 constituting a tappet roller bearing, and a support shaft 5 are manufactured by machining material formed of steel, into predetermined shape and then applying heat treatment including nitriding. Hardness is set to Hv650 or more in a surface layer forming the inner peripheral surface (a sliding contact surface) 6a of the roller 6, and the N content is set to 3.0 mass% or more and hardness is set to Hv700 or more in a surface layer part forming the outer peripheral surface 5a (a sliding contact surface) of the support shaft 5.
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Inventors:
KOMATA HIROKI
Application Number:
JP2005234634A
Publication Date:
February 22, 2007
Filing Date:
August 12, 2005
Export Citation:
Assignee:
NSK LTD
International Classes:
F16H53/06; F01L1/14
Attorney, Agent or Firm:
Osamu Akiyama