BEARING DEVICE - NTN TOYO BEARING CO LTD

Title:

BEARING DEVICE

Document Type and Number:

WIPO Patent Application WO/2013/038982

Kind Code:

A1

Abstract:

The present invention addresses the problem of providing a bearing device provided with an oil-supply device (13) that is energy-efficient, and without the use of a pump, can supply a lubricating oil from a lubricating-oil tank (39) to a rolling-element bearing (11) with no time lag. This bearing device (10), which comprises the combination of a rolling-element bearing (11) and an oil-supply device (13), is characterized in that said oil-supply device (13) comprises the following: a lubricating-oil tank (39) that stores pressurized lubricating oil and has a lubricating-oil outlet; a valve that opens and closes the outlet in the lubricating-oil tank; a drive unit that drives said valve; and a power-supply unit that generates electrical energy to drive the drive unit. This bearing device is further characterized in that the oil-supply device is attached either to the rolling-element bearing (11) or to a spacer (12) adjacent thereto.

Inventors:

ITO HIROYOSHI (JP)
OOMOTO KAORU (JP)

Application Number:

PCT/JP2012/072716

Publication Date:

March 21, 2013

Filing Date:

September 06, 2012

Export Citation:

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Assignee:

NTN TOYO BEARING CO LTD (JP)
ITO HIROYOSHI (JP)
OOMOTO KAORU (JP)

International Classes:

F16C33/66; F16C19/16; F16C19/52; F16C41/00; F16N9/02; F16N11/04; F16N11/08; F16N29/00

Foreign References:

JP2004108388A	2004-04-08
JP2008106900A	2008-05-08
JP2007138963A	2007-06-07
JP2010078114A	2010-04-08
JPH11190270A	1999-07-13
JP2004108388A	2004-04-08
JP2004316707A	2004-11-11
JP2008106900A	2008-05-08

Other References: