Title:
ころ軸受及びころ軸受用保持器
Document Type and Number:
Japanese Patent JP7141835
Kind Code:
B2
Abstract:
A tapered roller bearing is provided which includes an inner ring (1) and an outer ring (2) both made of a steel material; and a plurality of cage segments (5) circumferentially continuously disposed between the inner ring (1) and the outer ring (2), into an annular shape. The cage segments (5) are made of a resin containing a predetermined amount of a predetermined thermally expandable filler, and having, in combination with the filler, a coefficient of linear expansion of less than 1.0 X 10-5/°C. A gap (R) is defined between the flat surfaces of the firstly mounted cage segment (5a) and the lastly mounted cage segment (5b). The amount by which the cage segments (5) thermally expand is limited such that, at the upper limit value of a bearing use temperature range, the gap (R) is less than 0.12% of the circumference of the circle passing through the centers of the annular cage segments in the radial thickness directions of the cage segments (5).
Inventors:
Tomohito Ito
Application Number:
JP2018038734A
Publication Date:
September 26, 2022
Filing Date:
March 05, 2018
Export Citation:
Assignee:
ntn corporation
International Classes:
F16C33/56; B29C45/00; F16C19/36; F16C33/51
Domestic Patent References:
| JP201048342A | ||||
| JP2007303601A |
Attorney, Agent or Firm:
Naoya Kamada
Bunji Kamata
Yaichiro Nakatani
Bunji Kamata
Yaichiro Nakatani
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