Current passage can occur in the use of rolling bearings in: - wheelsets and traction motors (rail vehicles); - direct current and alternating current motors (power transmission); - generators (wind power).
Under unfavourable conditions, this causes damage to raceways and rolling elements as well as degradation of the lubricant and thus to premature, unexpected failure of a motor or generator. In addition to the repair work required, this incurs additional costs due to machine downtime and lost production. It is significantly more cost-effective to provide for the use of electrically insulated bearings at the planning stage. As a result, customer benefit is increased through reduced maintenance costs and higher machine availability. Normally, it is sufficient to interrupt the circuit between the housing and shaft in order, depending on the application, to insert currentinsulating bearings at one or both bearing positions,
Publisher: Schaeffler Technologies AG & Co. KG