US 9,810,263 B2
Retainer segment for a roller bearing for supporting a main shaft of a wind-power generator
Tatsuya Omoto, Suzuka (JP); Eiichi Nakamizo, Kunitachi (JP); and Tomoya Sakaguchi, Kuwana (JP)
Assigned to NTN CORPORATION, Osaka (JP)
Filed by NTN CORPORATION, Osaka (JP)
Filed on May 16, 2014, as Appl. No. 14/279,539.
Application 14/279,539 is a continuation of application No. 12/310,798, filed on Mar. 6, 2009, granted, now 8,764,304.
Claims priority of application No. 2006-244396 (JP), filed on Sep. 8, 2006; application No. 2006-244397 (JP), filed on Sep. 8, 2006; application No. 2006-352462 (JP), filed on Dec. 27, 2006; application No. 2007-148352 (JP), filed on Jun. 4, 2007; and application No. 2007-148353 (JP), filed on Jun. 4, 2007.
Prior Publication US 2014/0248018 A1, Sep. 4, 2014
This patent is subject to a terminal disclaimer.
Int. Cl. F16C 33/56 (2006.01); F16C 33/46 (2006.01); F16C 33/51 (2006.01); F16C 19/36 (2006.01); F03D 80/70 (2016.01); F03D 9/25 (2016.01); F16C 41/04 (2006.01); F16C 43/04 (2006.01); F16C 19/38 (2006.01)
CPC F16C 33/513 (2013.01) [F03D 9/25 (2016.05); F03D 80/70 (2016.05); F16C 19/364 (2013.01); F16C 33/467 (2013.01); F16C 33/4635 (2013.01); F16C 33/56 (2013.01); F16C 41/04 (2013.01); F16C 19/386 (2013.01); F16C 33/4676 (2013.01); F16C 43/04 (2013.01); F16C 2208/36 (2013.01); F16C 2240/46 (2013.01); F16C 2300/14 (2013.01); F16C 2360/31 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A retainer segment provided in a roller bearing, for supporting a main shaft of a wind-power generator, having a pocket to house a roller, and arranged so as to be continuously lined with each other in a circumferential direction, wherein
said retainer segment is formed of a resin containing a filler material, wherein the thermal linear expansion coefficient of said retainer segment is 1.3×10−5/C.° to 1.7×10−5/C.°, the filler material lowering the thermal linear expansion coefficient for the retainer segment as compared to a retainer segment that is made only of said resin,
wherein lowering of the thermal linear expansion coefficient of the retainer segment such that the thermal linear expansion coefficient of the retainer segment approximates a thermal linear expansion coefficient of a steel bearing component of the roller bearing and a circumferential spacing between adjacent retainer segments is within a range so that a function of the roller bearing can be prevented from being lowered as a result of pushing between adjacent retainer segments, and
further wherein the retainer segment is sized for a roller bearing that supports the main shaft of a wind power generator, the roller bearing having a pocket to house a roller, in the roller bearing, a plurality of retainer segments are continuously lined with each other in a circumferential direction of the roller bearing.