Sealed roller bearing e.g. deep groove ball bearing, for being mounted in e.g. electromagnetic clutch device, has sealing surface machined using steel cut after realizing treatment, where finishing of surface is obtained using immerse cut

摘要

The bearing has an inner ring (12) and an outer ring presenting tracks on external and internal peripheries, respectively. Rolling elements are disposed between the tracks, and a hermetic device presents a sealing lip and renders an annular space formed between the rings in sealed manner. A sealing surface (32) of one of the rings is in contact with the sealing lip and is machined using a tempered steel cut after realizing a thermal treatment. The finishing of the surface is obtained using an immerse cut during machining. A cutting tool (36) is pressed against the surface to be machined. An independent claim is also included for a method for manufacturing a sealed roller bearing.