METHOD FOR INCREASING THE LOAD-BEARING CAPACITY, AND ROLLING DEVICE FOR HARD ROLLING A SURFACE-HARDENED ROLLING-BEARING RACEWAY

摘要

The invention relates to a method for increasing the load-bearing capacity of a surface-hardened rolling-bearing raceway of a rolling-bearing ring element, comprising - providing a rolling-bearing ring element which has an unhardened core region (K) and, at least in certain portions, a surface layer (Ra) hardened to a surface-hardening depth (Rht), wherein a rolling-bearing raceway is formed in the region of the hardened surface layer (Ra), - hard rolling the rolling-bearing raceway using a roller, wherein the diameter of the roller is chosen in the range of 8 to 25 times the surface-hardening depth (Rht), - a level of surface pressing that prevails in the rolling contact between the roller and the rolling-bearing raceway during the hard rolling process is set in the range between 2000 MPa and 3300 MPa and - after being hard rolled, the rolling-bearing raceway is machined, and the invention also relates to a rolling device for hard rolling a surface-hardened rolling-bearing raceway of a rolling-bearing ring element.