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Title:
THRUST ROLLER BEARING
Document Type and Number:
Japanese Patent JP2012145153
Kind Code:
A
Abstract:

To provide a thrust roller bearing appropriate for uses to support various load from a light load to a normal load, and to facilitate control of a mutual difference of the roller diameters in a stage of manufacturing the bearing.

A shaft bearing washer 1, a housing bearing washer 2 and a plurality of rollers 3 are respectively formed from a steel having 206 GPa or less of Young's modulus. A mutual difference of the roller diameter between the roller 3 having the maximum roller diameter Da1 and the roller 3 having the minimum roller diameter Da2 is set at 3 μm and below. The roller 3 has a hollow part 6 formed into a concentric circle in any plane vertical to the roller center axis, and the hollow parts 6 of all the rollers 3 are provided at a hollow part diameter 0.5-0.6 time of the maximum roller diameter Da1 in any of the planes.


Inventors:
MAEDA TAKESHI
Application Number:
JP2011003009A
Publication Date:
August 02, 2012
Filing Date:
January 11, 2011
Export Citation:
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Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F16C19/30; F16C27/04; F16C33/34; F16C33/46; F16C33/62
Domestic Patent References:
JPS63312512A1988-12-21
JP2002061644A2002-02-28
JPS4964751A1974-06-22
JP2002364648A2002-12-18
JP2008246637A2008-10-16
JP2008075803A2008-04-03
JPH11325083A1999-11-26
JPS63312512A1988-12-21
JP2002061644A2002-02-28
Foreign References:
WO2003029669A12003-04-10
WO2003029669A12003-04-10
Attorney, Agent or Firm:
Bunji Kamada
Takayoshi Tagawa
Higashio Masahiro
Tounaga Mitsuhiro



 
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