Title:
SELF-ALIGNING ROLLER BEARING FOR AXIAL OR RADIAL ECCENTRIC LOADING OPERATION CONDITIONS, AND HEAT TREATMENT PROCESS
Document Type and Number:
WIPO Patent Application WO/2022/016832
Kind Code:
A1
Abstract:
A self-aligning roller bearing for axial or radial eccentric loading operation conditions, pertaining to the technical field of bearings. The roller bearing comprises: an outer ring (100); an inner ring (200); and two arrays of symmetrical spherical rollers retained by a retainer between two inner raceways and a shared outer raceway. The two arrays of rollers have different lengths, such that the two arrays of rollers constitute long rollers (310) and short rollers (320), respectively. The maximum diameter of the short rollers (320) is less than the maximum diameter of the long rollers (310). The center of the spherical surface of the outer raceway is offset from an axial center of the bearing toward the end of the short rollers (320) in an axial direction of the bearing. Further disclosed is a heat treatment process for a self-aligning roller bearing for axial or radial eccentric loading operation conditions. The self-aligning roller bearing for axial or radial eccentric loading operation conditions and the heat treatment process increase the allowable deflection angle of the bearing, achieves contact stress uniformity for rollers on both sides and on the raceways, improves the overall service life of the bearing, and offers high hardness, size stability, and wear resistance of the bearing at high temperatures, thereby being applicable as main transmission box output bearings of marine engineering equipment, metallurgical machinery, electric power equipment, special vehicles, axial fans, and the like.
Inventors:
CAI MEIGUI (CN)
CAI YUQUAN (CN)
CAI XINYI (CN)
ZHANG MINGYUAN (CN)
CAI YUQUAN (CN)
CAI XINYI (CN)
ZHANG MINGYUAN (CN)
Application Number:
PCT/CN2021/071038
Publication Date:
January 27, 2022
Filing Date:
January 11, 2021
Export Citation:
Assignee:
SHANDONG YUJIE BEARING MFG CO LTD (CN)
International Classes:
F16C23/08; C21D1/18; C21D9/40; F16C19/50; F16C33/36; F16C33/37; F16C33/48; F16C33/58; F16C33/64
Foreign References:
| CN108026964A | 2018-05-11 | |||
| CN107191340A | 2017-09-22 | |||
| CN107740811A | 2018-02-27 | |||
| US20070127858A1 | 2007-06-07 | |||
| CN212509216U | 2021-02-09 | |||
| CN111720434A | 2020-09-29 | |||
| CN101586621A | 2009-11-25 | |||
| CN102829083A | 2012-12-19 | |||
| JP2000065052A | 2000-03-03 |
Attorney, Agent or Firm:
JINAN LUKE PATENT AGENCY CO., LTD (CN)
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