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Title:
MANUFACTURING METHOD FOR RETAINER OF THRUST ROLLER BEARING
Document Type and Number:
Japanese Patent JP2006220228
Kind Code:
A
Abstract:

To provide a manufacturing method for a retainer of a thrust roller bearing excellent in durability by securing a sufficient plate thickness in order to maintain strength of the retainer and a pertinent clearance between a roller and a roller retaining part.

A circular ring-like member is drawn (process b) by a blanking process from a coil material(process a) and a projected part is formed (process c) in the center of the circular ring-like member by press-working the circular ring upper member. By lifting both ends, the cross section is formed into a W shape (process d) and the inside and outside diameter of the retainer are finished to a predetermined size and shape (process e, f). Next, through the blanking process a plurality of pockets to accommodate rollers (process g) and a first roller contact part and a second roller contact part are formed on the wall surface of the pocket and a roller stop part is formed (process h) through a plane pressing process in the roller contact part.


Inventors:
Oishi, Shinji
Application Number:
JP2005000034771
Publication Date:
August 24, 2006
Filing Date:
February 10, 2005
Export Citation:
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Assignee:
NTN CORP
International Classes:
F16C33/54; B21D53/12; B24B39/00; F16C19/30; F16C33/56; F16C33/46; B21D53/10; B24B39/00; F16C19/22