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Patent Searching and Data


Title:
MANUFACTURING METHOD FOR WHEEL BEARING DEVICE
Document Type and Number:
Japanese Patent JP2008106904
Kind Code:
A
Abstract:

To provide a manufacturing method for a wheel bearing device that allows easily and efficiently managing bearing clearance and providing accurate clearance.

A manufacturing method is provided for a wheel bearing device in which, of groups of double row balls 3, the group of outer balls 3 have their pitch circle diameters PCDo set to be larger than the pitch circle diameters PCDi of the group of inner balls 3, and in which an inner ring 5 is axially fixed in place by a tightening part 8 formed by the plastic deformation of an end of the small-diameter stepped portion 4b of a hub ring 4. The double-row outer rolling surfaces 2a, 2b of an outer member 2 are first ground by a formed grinding wheel and their touch diameters and touch-part pitch lengths are computed while the diameter of a prepared ball 3 is taken into consideration. This information is fed back to a grinding process for the respective inner rolling surfaces 4a, 5a of the hub ring 4 and the inner ring 5 and the inner rolling surfaces 4a, 5a are ground.


Inventors:
KAMETAKA KOJI
Application Number:
JP2006292431A
Publication Date:
May 08, 2008
Filing Date:
October 27, 2006
Export Citation:
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Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F16C33/64; F16C35/063; F16C43/04
Attorney, Agent or Firm:
Takao Koshikawa