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:
Aug. 04, 1998
Filed:
Nov. 01, 1996
Sanyo Special Steel Co., Ltd., Hyogo-ken, JP;
NSK Ltd., Tokyo-to, JP;
Abstract
A bearing steel is provided which can satisfy bearing property requirements and, at the same time, is improved in mechanical properties, such as impact, crushing, and transverse properties, while reducing the cost of materials and the cost of heat treatment for the production of a bearing. The bearing steel comprises by weight C: 0.70 to 0.93%, Si: 0.15 to 0.50%, Mn: 0.50 to 1.10%, Cr: 0.30 to 0.65%, and N: 0.005 to 0.02% with the balance consisting of Fe and unavoidable impurities and 0.4.ltoreq.Cr/C.ltoreq.0.7, the steel further comprising at least one of (1) Al: 0.01 to 0.1% with Al.times.N.gtoreq.0.00015 and (2) Nb: 0.02 to 0.1%. A rolling bearing produced from the bearing steel is also provided.