Patent ID: 8319385
Filing Date: 2012-11-27
Classification: F16C

Abstract:
1. A bearing for rotatable devices, the bearing comprising: an inner ring; an outer ring, wherein the outer ring is made in multiple parts and has a U-shaped cross section that is open to an inside in the assembled state, into which the inner ring extends, one of said inner ring and said outer ring defining a rotating ring; electromagnets; distance sensors, the electromagnets and distance sensors being disposed in the axially and radially opposite areas of the inner ring or outer ring; and one or more arrest bearings carrying the rotating ring in case of a failure of electric power supply to the electromagnets, the one or more arrest bearings being disposed next to or in the area of the electromagnets, wherein at least one of the arrest bearings is configured as an anti-friction bearing with balls or rollers that are held in a cage pre-tensioned with at least one spring.