ROLLER BEARING, RETAINER SEGMENT FOR WIND-POWER PLANT SPINDLE SUPPORTING ROLLER BEARING, AND SPINDLE SUPPORTING STRUCTURE OF WIND-POWER PLANT

Title:

ROLLER BEARING, RETAINER SEGMENT FOR WIND-POWER PLANT SPINDLE SUPPORTING ROLLER BEARING, AND SPINDLE SUPPORTING STRUCTURE OF WIND-POWER PLANT

Document Type and Number:

WIPO Patent Application WO/2008/029796

Kind Code:

A1

Abstract:

A conical roller bearing (31a) includes a plurality of retainer segments (11a and 11d) having pockets for accommodating conical rollers (34a) and arranged sequentially in the circumferential direction between an outer ring (32a) and an inner ring (33a). The retainer segments (11a and 11d) are made of a resin containing a filler for lowering a thermal expansion coefficient. In case the retainer segments (11a and 11d) are arranged without any clearance in the circumferential direction, a clearance (39a) is formed between the first-arranged retainer segment (11a) and the last-arranged retainer segment (11d). Here, at the room temperature, the circumferential size (R) of the clearance (39a) is larger than 0.075 % and smaller than 0.12 % of the circumference of the circle passing through the centers of the retainer segments (11a and 11d).

Inventors:

OMOTO TATSUYA (JP)
NAKAMIZO EIICHI (JP)
SAKAGUCHI TOMOYA (JP)

Application Number:

PCT/JP2007/067199

Publication Date:

March 13, 2008

Filing Date:

September 04, 2007

Export Citation:

Click for automatic bibliography generation Help

Assignee:

NTN TOYO BEARING CO LTD (JP)
OMOTO TATSUYA (JP)
NAKAMIZO EIICHI (JP)
SAKAGUCHI TOMOYA (JP)

International Classes:

F16C19/38; F03D11/04; F16C33/36; F16C35/063

Foreign References:

JP2003336642A	2003-11-28
JP2005061434A	2005-03-10
JPH01242662A	1989-09-27
JP2006308080A	2006-11-09
JP2003278746A	2003-10-02
JP2004019921A	2004-01-22
JP2002122148A	2002-04-26
JP2005147331A	2005-06-09
EP1408248A2	2004-04-14
JP2005061434A	2005-03-10
JP2003336642A	2003-11-28
JP2004278746A	2004-10-07
GB2361965A	2001-11-07

Other References:

J.A. BARNES ET AL.: "Thermal expansion characteristics of PEEK composites", JOURNAL OF MATERIALS SCIENCE, vol. 26, no. 8, 1 January 1991 (1991-01-01), pages 2259 - 2271, XP055008085, DOI: doi:10.1007/BF00549197
See also references of EP 2060806A4

Attorney, Agent or Firm:

ITOH, Hidehiko et al. (Oriental Sakaisuji Bldg. 21-19, Shimanouchi 1-chome, Chuo-ku, Osaka-sh, Osaka 82, JP)

Download PDF:

View/Download PDF PDF Help

Previous Patent: METHOD OF REINFORCING EXISTING STRUCTURE WITH CARBON FIBER

Next Patent: SIMULATION METHOD, FIBER ORIENTATION CONTROL METHOD, AND FIBER ORIENTATION CONTROL DEVICE