Method for increasing the load-bearing capacity, and rolling device for hard rolling a surface-hardened rolling-bearing raceway

US12110926B2 · kind B2 · utility

Assignees

• THYSSENKRUPP ROTHE ERDE GERMANY GMBH · DE
• thyssenkrupp AG · DE

Inventors

• Joerg Rollmann · Lippstadt, DE
• Thomas Handreck · Erwitte, DE
• Bernd Lueneburg · Dielheim, DE
• Matthias Toefke · Lippstadt, DE
• Christian Liewen · Lippstadt, DE

Key dates

• Filing date: Dec 4, 2023
• Grant date: Oct 8, 2024
• Expiry date: Dec 4, 2043

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2360/31
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A rotor bearing having a rolling bearing raceway in an unhardened core region of a rolling bearing ring element that further includes an outer layer hardened to a surface hardening depth wherein the rolling bearing raceway is formed by a roll, wherein a diameter of the roll is 8 to 25 times the surface hardening depth.