Tapered roller bearing
A technology of tapered roller bearings and tapered rollers, which is applied in the direction of roller bearings, bearings, rolling contact bearings, etc., and can solve problems such as products not being seen
Active Publication Date: 2021-07-23
NTN CORP
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0002] Although no flange is formed at the large-diameter side end of the inner ring raceway surface of the inner ring, a flange protruding radially inward is formed only at the large-diameter side end of the outer ring raceway of the outer ring. The sub-bearing is disclosed in Patent Document 1 or Patent Document 2, but hardly seen as a product
Method used
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Embodiment Construction
[0087] Embodiments of the present invention will be described below based on the drawings.
[0088] The tapered roller bearing 11 of the present invention has a structure in which the contact angle α has a high slope of 40° to 50° and the roll angle has a low slope of 3.5° or less. exist Figure 3 ~ Figure 33 The tapered roller bearing 11 of the illustrated embodiment has a contact angle α of 45° and a rolling angle of 3.5°.
[0089] Such as image 3 As shown, the tapered roller bearing 11 of the embodiment of the present invention includes: an outer ring 12 having an outer ring raceway surface 12a on the inner peripheral surface; an inner ring 13 having an inner ring raceway surface 13a on the outer peripheral surface; A plurality of tapered rollers 14 are rotatably arranged between the surface 12a and the inner ring raceway surface 13a; and a cage 15 having a plurality of pockets for accommodating and holding the plurality of tapered rollers 14 at predetermined intervals. ...
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The present invention addresses the problem of achieving high moment stiffness and long service life without significantly degrading the loading capacity of a pure axial load in a tapered roller bearing in which a flange section is formed on a large diameter-side end section of the outer ring race surface of an outer ring. This tapered roller bearing 11 is provided with: an outer ring 12 having an outer ring race surface 12a on the inner peripheral surface thereof; an inner ring 13 having an inner ring race surface 13a on the outer peripheral surface thereof; a plurality of tapered rollers rollably arranged between the outer ring race surface 12a and the inner ring race surface 13a; and a retainer 15 having a plurality of pockets for accommodating and holding the plurality of tapered rollers 14 at predetermined intervals, wherein a flange section 12b protruding radially inward is formed on the large-diameter-side end section of the outer ring race surface 12a of the outer ring 12, among the small-diameter-side end section and the large-diameter-side end section of the outer ring race surface 12a of the outer ring 12, and the small-diameter-side end section and the large-diameter-side end section of the inner ring race surface 13a of the inner ring 13, the tapered roller bearing being characterized in that the contact angle is set to be 35 degrees or greater and the roller angle is set to be 3.5 degrees or less.
Description
technical field [0001] The present invention relates to a tapered roller bearing used in a reducer of a robot or a construction machine, and in particular to the small-diameter side end and the large-diameter side end of the outer ring raceway surface of the outer ring, and the inner ring raceway surface of the inner ring A tapered roller bearing in which a flange protruding radially inward is formed only at the large-diameter end of the outer ring raceway surface of the outer ring among the four ends of the small-diameter end and the large-diameter end. Background technique [0002] Although no flange is formed at the large-diameter side end of the inner ring raceway surface of the inner ring, a flange protruding radially inward is formed only at the large-diameter side end of the outer ring raceway of the outer ring. The sub-bearing is disclosed in Patent Document 1 or Patent Document 2, but hardly seen as a product. [0003] prior art literature [0004] patent document...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F16C19/36
CPCF16C19/364F16C33/366F16C33/585F16C2240/30F16C2240/70F16C33/4635F16C33/4676F16C33/4605
Inventor 林康由胁坂贵司万田佐保子
Owner NTN CORP