PULLEY ROTATINGLY SUPPORTING DEVICE

Title:

PULLEY ROTATINGLY SUPPORTING DEVICE

Document Type and Number:

WIPO Patent Application WO/2003/025409

Kind Code:

A1

Abstract:

A pulley rotatingly supporting device, comprising a three−point contact type or a four−point contact type radial ball bearing (14b), wherein an offset amount (&dgr ) as an axial distance between the center portion (&agr ) of a radial load applied from an endless belt (11) to a driven pulley (4b) and the center position (β) of the radial ball bearing (14b) is set to 40% or less of the pitch circle diameter of the radial ball bearing (14b), and the radial clearance of the radial ball bearing (14b) is set to 0.2% or less of the pitch circle diameter, whereby the durability of the endless belt (11) applied onto the driven pulley (4b) and the pulley rotatingly supporting device for supporting the driven pulley (4b) can be assured with a downsized structure.

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Inventors:

TANABE KOUICHI (JP)
MIYAGAWA TAKAYUKI (JP)
TANIGUCHI MASATO (JP)

Application Number:

PCT/JP2002/009228

Publication Date:

March 27, 2003

Filing Date:

September 10, 2002

Export Citation:

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Assignee:

NSK LTD (JP)
TANABE KOUICHI (JP)
MIYAGAWA TAKAYUKI (JP)
TANIGUCHI MASATO (JP)

International Classes:

F16C13/00; F16C19/16; F16C33/41; F16C33/78; F16H55/36; (IPC1-7): F16C19/16; F16C33/41; F16C33/66; F16C33/78; F16H7/02; F16H55/36

Foreign References:

US6273230B1	2001-08-14
JPH11210766A	1999-08-03
JPH11336795A	1999-12-07
US20010028754A1	2001-10-11
JPH08177871A	1996-07-12
JP2001304279A	2001-10-31
JPH08232967A	1996-09-10
JPH047726U	1992-01-23
JPH0673454U	1994-10-18

Other References: