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:
Jan. 16, 2024
Filed:
Nov. 26, 2020
Thyssenkrupp Rothe Erde Germany Gmbh, Dortmund, DE;
Thyssenkrupp Ag, Essen, DE;
Joerg Rollmann, Lippstadt, DE;
Thomas Handreck, Anroechte, DE;
Bernd Lueneburg, Muelheim, DE;
Matthias Toefke, Lippstadt, DE;
Christian Liewen, Lippstadt, DE;
thyssenkrupp rothe erde Germany GmbH, Dortmund, DE;
thyssenkrupp AG, Essen, DE;
Abstract
A method for increasing load capacity of a surface-hardened rolling bearing raceway of a rolling bearing ring element may involve providing a rolling bearing ring element with an unhardened core region and, at least in certain portions, an outer layer hardened to a surface hardening depth. A rolling bearing raceway may be formed in a region of the hardened outer layer. The method may further involve hard rolling the rolling bearing raceway with a roll. The diameter of the roll is 8 to 25 times the surface hardening depth. A surface pressure prevailing in a rolling contact between the roll and the rolling bearing raceway during the hard rolling is between 2000 MPa and 3300 MPa. The method further involves machining the rolling bearing raceway after the hard rolling.