Title:
DOUBLE-ROW SELF-ALIGNING ROLLER BEARING
Document Type and Number:
WIPO Patent Application WO/2017/164325
Kind Code:
A8
Abstract:
In this double-row self-aligning roller bearing (1), rollers (4, 5) are interposed, between an inner race (2) and an outer race (3), in two rows beside each other in the widthwise direction of the bearing, a raceway surface (3a) of the outer race (3) is spherical, and the outer peripheral surfaces of the two rows of rollers (4, 5) have a cross-sectional shape that conforms to the raceway surface (3a) of the outer race (3). The two rows of rollers (4, 5) have different lengths (L1, L2) and the length (L1) of the long roller (5) is at least 39% of the bearing width (B). The ratio of the contact angle (θ1) of the short roller (4) to the contact angle (θ2) of the long roller (5) is within the range 1:2 to 1:4. Thus, the present invention can simultaneously receive both axial load and radial load, can be used in applications in which loads of different sizes act on two rows of rollers beside each other in the axial direction, and makes it possible to sufficiently increase, within the constraints of boundary dimensions, the load capacity of the roller in the row that receives the axial load.
Inventors:
YAMAMOTO TAKASHI (JP)
SEKO KAZUMASA (JP)
INOUE YASUYUKI (JP)
HORI MICHIO (JP)
SEKO KAZUMASA (JP)
INOUE YASUYUKI (JP)
HORI MICHIO (JP)
Application Number:
PCT/JP2017/011775
Publication Date:
September 07, 2018
Filing Date:
March 23, 2017
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16C23/08; F16C19/38
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (JP)
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