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Title:
ROLLING BODY FOR TOROIDAL TYPE CONTINUOUSLY VARIABLE TRANSMISSION, MANUFACTURE THEREOF, AND INSPECTION METHOD THEREOF
Document Type and Number:
Japanese Patent JPH10184836
Kind Code:
A
Abstract:

To provide a rolling body power roller for a toroidal type continuously variable transmission in which high surface carbon density with less dispersion is provided while rolling fatigue strength of a bearing face groove part receiving a load under high temperature and high pressure is improved further.

In a rolling body power roller 1 for a toroidal type continuously variable transmission constructed by bringing the rolling body power roller 1 into contact with a rolling body disc via lubrication oil, the surface carbon density of a bearing face groove part B of a power roller outer ring, which is finished after a carbonizing/carbonitriding process, is equal to that of a bearing groove back face part C or more, while the effective hardened layer depth of the bearing face groove part B is equal to that of the bearing groove back face part C or more. In addition, the surface carbon density and the effective hardened layer depth of the bearing face groove part B are equal to those of a bearing face groove part inside diameter side flat part A or more.


Inventors:
Kino, Nobuo
Hibi, Toshifumi
Application Number:
JP1996000342006
Publication Date:
July 14, 1998
Filing Date:
December 20, 1996
Export Citation:
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Assignee:
NISSAN MOTOR CO LTD
International Classes:
C21D9/40; C23C8/30; C23C8/80; F16H15/38; (IPC1-7): F16H15/38; C21D9/40; C23C8/30
Attorney, Agent or Firm:
小塩 豊