XL hybrid bearings from SKF are aimed at wind-turbine generators and engineered to provide insulation against electric currents. Their use can almost eliminate the risk of premature bearing failures due to erosion from electric currents. In addition the units can maximize lubricant effectiveness for long-term performance, even under poor lubrication conditions.
These bearings benefit from a deep groove ball design combining steel rings and bearing-grade silicon nitride (ceramic) rolling elements. The units are lighter, harder, less dense, and more durable than all-steel bearing counterparts, and they conform to standard bearing boundary dimensions.
Resulting benefits include higher reliability than conventional bearings along with reductions in life-cycle costs, total operating costs, and maintenance requirements. The bearings can upgrade existing wind-turbine generators without redesigning them.
The bearings are available in many sizes. Custom designs are also possible.