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 (3066 Aza Oyumida, Oaza Higashikata, Kuwana-sh, Mie 11, 5110811, JP)
大本 達也 (〒11 三重県桑名市大字東方字尾弓田３０６６ ＮＴＮ株式会社内 Mie, 5110811, JP)
NAKAMIZO, Eiichi (3066 Aza Oyumida, Oaza Higashikata, Kuwana-sh, Mie 11, 5110811, JP)
大本 達也 (〒11 三重県桑名市大字東方字尾弓田３０６６ ＮＴＮ株式会社内 Mie, 5110811, JP)
NAKAMIZO, Eiichi (3066 Aza Oyumida, Oaza Higashikata, Kuwana-sh, Mie 11, 5110811, JP)
Application Number:
JP2007/067199
Publication Date:
March 13, 2008
Filing Date:
September 04, 2007
Export Citation:
Assignee:
NTN CORPORATION (3-17, Kyomachibori 1-chome Nishi-ku, Osaka-sh, Osaka 03, 5500003, JP)
ＮＴＮ株式会社 (〒03 大阪府大阪市西区京町堀１丁目３番１７号 Osaka, 5500003, JP)
OMOTO, Tatsuya (3066 Aza Oyumida, Oaza Higashikata, Kuwana-sh, Mie 11, 5110811, JP)
大本 達也 (〒11 三重県桑名市大字東方字尾弓田３０６６ ＮＴＮ株式会社内 Mie, 5110811, JP)
ＮＴＮ株式会社 (〒03 大阪府大阪市西区京町堀１丁目３番１７号 Osaka, 5500003, JP)
OMOTO, Tatsuya (3066 Aza Oyumida, Oaza Higashikata, Kuwana-sh, Mie 11, 5110811, JP)
大本 達也 (〒11 三重県桑名市大字東方字尾弓田３０６６ ＮＴＮ株式会社内 Mie, 5110811, JP)
International Classes:
F16C19/38; F03D11/04; F16C33/36; F16C35/063
Attorney, Agent or Firm:
ITOH, Hidehiko et al. (IMY INTERNATIONAL PATENT OFFICE, Oriental Sakaisuji Bldg. 21-19, Shimanouchi 1-chome, Chuo-ku, Osaka-sh, Osaka 82, 5420082, JP)
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