Date: 2013-08-01

Electrically Insulated Bearings Prevent Damages by Electro Corrosion

For modern electrical machines with high degree of performance and demanding reliability and service life, equipment failures due to electro corrosion could cause significant problems. NKE Austria offers electrically insulated bearings which provide optimum protection against damages by undesirable passage of currents.
NKE electrically insulated rolling bearings reliably prevent current discharge. Three versions are available. Bearings with oxide ceramic insulating layers - Applied with plasma technology, the insulation has a guaranteed dielectric strength of at least 1000 V ac or dc.

SQ77: Insulation on the outer ring.

SQ77E: Insulation on the inner ring.

SQ77B (hybrid bearing): Rolling bearing with oxide ceramic rolling elements. Resistance of insulation theoretically indefinte.

The advantages of NKE electrically insulated bearings are:

- Higher operational reliability through optimum protection against electrical corrosion

More economic than, for example, insulation on housings or shafts.

- Interchangeable: Same key dimensions and technical properties as conventional bearings

Coating resistant to damage if correctly handled

NKE manufactures electrically insulated cylindrical roller and deep groove ball bearings in standard sizes with outer ring diameter between 80mm and 400mm. Other bearing types and special sizes are available upon request.

Enter 52 or XX at www.engineerlive.com/ede

NKE AUSTRIA GmbH is based in Steyr-Gleink, Austria. www.nke.at

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