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Title:
DOUBLE-ROW SELF-ALIGNING ROLLER BEARING
Document Type and Number:
WIPO Patent Application WO/2019/203265
Kind Code:
A1
Abstract:
This double-row self-aligning roller bearing is provided with: an inner ring (2); an outer ring (3) having a spherical raceway surface; and a plurality of rollers (4, 5) positioned between the inner ring (2) and the outer ring (3) so as to be arranged in two rows arranged side-by-side in the bearing width (B) direction. Each of the rollers in the two rows has an outer peripheral surface having a cross-sectional shape conforming to the raceway surface of the outer ring. In the double-row self-aligning roller bearing (1), the ratio between the contact angle θ1 of the rollers in one row, and the contact angle θ2 of the rollers in the other row is set within the range of 0.25 ≤ θ1/θ2 ≤ 0.5, and the ratio between the bearing width direction distance B1 from a bearing end surface (E1) on the side of the one row to the intersection point (P) between the two lines of action forming the contact angles of both the rows, and the bearing width direction distance B2 from a bearing end surface (E2) on the side of the other row to the intersection point (P) is set within the range of 0.5 ≤ B1/B2 ≤ 0.6.

Inventors:
SEKO, Kazumasa (3066 Aza Oyumida, Oaza Higashikata, Kuwana-sh, Mie 78, 〒5118678, JP)
HORI, Michio (3066 Aza Oyumida, Oaza Higashikata, Kuwana-sh, Mie 78, 〒5118678, JP)
INOUE, Yasuyuki (3066 Aza Oyumida, Oaza Higashikata, Kuwana-sh, Mie 78, 〒5118678, JP)
YAMAMOTO, Takashi (3066 Aza Oyumida, Oaza Higashikata, Kuwana-sh, Mie 78, 〒5118678, JP)
NAKANISHI, Masaki (105 Hidamarinooka 5-chome, Kuwana-sh, Mie 67, 〒5110867, JP)
Application Number:
JP2019/016453
Publication Date:
October 24, 2019
Filing Date:
April 17, 2019
Export Citation:
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Assignee:
NTN CORPORATION (3-17, Kyomachibori 1-chome Nishi-ku, Osaka-sh, Osaka 03, 〒5500003, JP)
International Classes:
F16C23/08; F03D80/70; F16C19/38
Domestic Patent References:
WO2017164325A12017-09-28
Foreign References:
JP2012219995A2012-11-12
JP2016186355A2016-10-27
JP2015205328A2015-11-19
JP2010112527A2010-05-20
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (Higobashi Nittai Bldg, 10-2 Edobori 1-chome, Nishi-ku, Osaka-sh, Osaka 02, 〒5500002, JP)
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