The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 21, 2023
Filed:
Feb. 17, 2022
Applicant:
Aktiebolaget Skf, Gothenburg, SE;
Inventors:
Feizhou Zhang, Shanghai, CN;
Staffan Larsson, Gothenburg, SE;
Assignee:
AKTIEBOLAGET SKF, Gothenburg, SE;
Primary Examiner:
Int. Cl.
CPC ...
F16C 33/62 (2006.01); F16C 33/34 (2006.01); C21D 9/38 (2006.01);
U.S. Cl.
CPC ...
F16C 33/62 (2013.01); C21D 9/38 (2013.01); F16C 33/34 (2013.01); F16C 2204/72 (2013.01); F16C 2223/12 (2013.01); F16C 2223/16 (2013.01);
Abstract
An inner ring or and outer ring for a roller bearing includes: 0.30-0.45 wt. % carbon, 0.1-0.7 wt. % silicon, 0.6-0.9 wt. % manganese, 0.9-1.2 wt. % chromium, 0.15-0.7 wt. % molybdenum, 0-2.0 wt. % nickel, 0-0.02 wt. % phosphorus, and 0-0.02 wt. % sulfur, the balance being iron and unavoidable impurities. The microstructure of the steel composition contains bainite, and a carbonitrided case layer is provided on a surface of the inner ring or outer ring.