INSULATING ROLLING BEARING FOR USE IN PREVENTION OF ELECTRIC CORROSION, METHOD FOR MANUFACTURE THEREOF, AND BEARING DEVICE

Title:

INSULATING ROLLING BEARING FOR USE IN PREVENTION OF ELECTRIC CORROSION, METHOD FOR MANUFACTURE THEREOF, AND BEARING DEVICE

Document Type and Number:

WIPO Patent Application WO/2007/049727

Kind Code:

A1

Abstract:

The object is to achieve all of an ensured insulating property, low cost and a good appearance at high levels. A ceramic which constitutes a insulating coating film (6) (i.e., a ceramic spraying layer) comprises alumina as the main ingredient and has a titanium oxide content of 0.01 to 0.2% by weight. The ceramic which forms the spraying layer has a particle diameter of 10 to 50 μm and an average particle diameter of 15 to 25 μm. By decreasing the content of titanium oxide, the thickness of the insulating coating film (6) can be reduced. By controlling the particle size, the degree of accuracy of the film thickness can be improved and the finishing processing can be performed in a simpler manner. Further, by adding titanium oxide, deterioration in appearance after sealing treatment can be prevented.

Inventors:

KONNO KATSUHIRO (JP)
KOTAKI KENJI (JP)
MURAI TAKASHI (JP)
FUJII OSAMU (JP)
WATANABE TETSUO (JP)
MATSUSHITA TAKAYUKI (JP)

Application Number:

PCT/JP2006/321434

Publication Date:

May 03, 2007

Filing Date:

October 26, 2006

Export Citation:

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Assignee:

NSK LTD (JP)
KONNO KATSUHIRO (JP)
KOTAKI KENJI (JP)
MURAI TAKASHI (JP)
FUJII OSAMU (JP)
WATANABE TETSUO (JP)
MATSUSHITA TAKAYUKI (JP)

International Classes:

F16C33/62; F16C19/06

Foreign References:

JP2005133876A	2005-05-26
JP2002048145A	2002-02-15
JPH10246238A	1998-09-14
JP2624337B2	1997-06-25
JPS5510111A	1980-01-24
JPH0643350U	1994-06-07
JPS6438320U	1989-03-07
JP2005042895A	2005-02-17

Other References: