Pre-stressed roller bearing e.g. grooved ball bearing, has inner and outer bearing units, where one unit consists of hardened steel with locally different residual austenite content that is adjusted, so that pre-stressing remains constant

摘要

The bearing has inner and outer bearing units with running paths, and roller bodies rolled under pre-stressing and accommodated between the running paths. One of the bearing units consists of hardened steel with locally different residual austenite content that is adjusted, so that the pre-stressing remains constant over the service life of the bearing. The residual austenite is not stabilized against tension-induced transformation. An independent claim is also included for a method of manufacturing a roller bearing.