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US 12,110,926 B2Granted
Method for increasing the load-bearing capacity, and rolling device for hard rolling a surface-hardened rolling-bearing raceway
Assigneesthyssenkrupp rothe erde Germany GmbH, thyssenkrupp AG
InventorsJoerg Rollmann, Thomas Handreck, Bernd Lueneburg, Matthias Toefke, Christian Liewen
Life of this patent
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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.
Claims8
A rolling apparatus for hard rolling a surface-hardened rolling bearing raceway of a rolling bearing ring element, comprising:
- a support apparatus with a supporting roll configured to support the rolling bearing ring element;
- a yoke that is held by tension rods that are articulated on the support apparatus, wherein the yoke, the tension rods, and the support apparatus together form a closed frame through which the rolling bearing ring element can be guided during the hard rolling;
- a roll stand that is hydraulically supported on the yoke, the roll stand being mounted so as to be displaceable in a longitudinal direction of the yoke by a positioning device;
- and
- a roll that is configured to process the rolling bearing raceway and is mounted in the roll stand.
2 more elements
Dependencies are inferred from the claim text.