Updated: Jan 20
FITT Resources in New South Wales, Australia found Isomag magnetic face bearing isolators to be the perfect solution for their rebuild on a SEW Eurodrive DRS Series electric motor. The DRS model 71 electric motor was experiencing problems of egress of the ISO-220 lubrication from the bearing housing, eventually causing the electric motor to fail. Their mining customer needed longer run times on these gearboxes. The culprit of this SEW Eurodrive DRS Series electric motor is the lip seals that are installed. Oil seals wear out in about 6-8 months on continuous use. Then the loss of lubrication from the bearing housing starts. On top of that, the lip seal wears a grove into the shaft, making it necessary to either refurbish the shaft or get a new one when it's time to repair.
Isomag magnetic face bearing isolators are a positive seal that wont damage the shafts of your electric motor, and work in horizontal or vertical up or down positions. Isomag magnetic face bearing isolators also work perfectly in grease lubrication environments. The Isomag bearing isolators were installed in February of 2015 and are still running leak free today. Isomag bearing isolators have a guaranteed life of 5 years, and usually run for 10+.
A brochure for Isomag bearing isolators for electric motors can be found here. Also as a reminder, Isomag bearing isolators can be custom made to fit your machine. Contact our customer service team and we will help you find the ideal solution for your needs.