COOLING STRUCTURE FOR BEARING DEVICE - NTN TOYO BEARING CO LTD

Title:

COOLING STRUCTURE FOR BEARING DEVICE

Document Type and Number:

WIPO Patent Application WO/2014/046153

Kind Code:

A1

Abstract:

In a bearing device of the present invention, an outer ring spacer (4) and an inner ring spacer (5) are provided between an outer ring and an inner ring (3) of a plurality of axially aligned rolling bearings, the outer ring and the outer ring spacer (4) are disposed in a housing, and the inner ring (3) and the inner ring spacer (5) are fit onto a primary shaft (7). On the outer ring spacer (4), provided is a nozzle (12) that sprays cooling fluid comprising a mixture of air and oil, or oil only, onto the outer circumferential surface of the inner ring (3) or the inner ring spacer to provide the cooling fluid to the rolling bearing. The discharge opening end of this nozzle (12) is disposed at a forward incline in the direction of rotation of the primary shaft (7). As a result of this configuration, the bearing device can favorably lubricate a rolling bearing and can efficiently cool the inner ring (3) and the inner ring spacer (5) of the rolling bearing as well as the primary shaft (7) that is fit into the inner periphery of these elements.

Inventors:

MORI MASATSUGU (JP)
MIZUTANI MAMORU (JP)
ONDA YUUSHI (JP)
TAMADA KENJI (JP)
HAYASHI YASUYOSHI (JP)

Application Number:

PCT/JP2013/075223

Publication Date:

March 27, 2014

Filing Date:

September 19, 2013

Export Citation:

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Assignee:

NTN TOYO BEARING CO LTD (JP)

International Classes:

F16C37/00; B23B19/02; B23Q11/12; F16C19/00; F16C19/36; F16C33/66

Foreign References:

JP2007092886A	2007-04-12
JP2010127399A	2010-06-10
JP2003207094A	2003-07-25
JP2000161375A	2000-06-13
JP2007010017A	2007-01-18
JP2005180531A	2005-07-07
JP2000161375A	2000-06-13
JP2000296439A	2000-10-24
JP2012026496A	2012-02-09
JP4261083B2	2009-04-30

Other References: