Hybrid bearings
Hybrid bearings have rings made of bearing steel and rolling elements made of bearing grade silicon nitride (Si3N4), which make the bearings electrically insulating.
Silicon nitride rolling elements can extend bearing service life by offering enhanced bearing performance, even under difficult operating conditions.
Hybrid deep groove ball bearings
Deep groove ball bearings are the most widely used bearing type, especially in electric motors. SKF hybrid deep groove ball bearings:
- Are non-separable
- Are suitable for high speeds
- Accommodate radial loads and axial loads in both directions because their uninterrupted raceway grooves have a close osculation with the balls
- Are available with a bore diameter ranging from 5 to 180 mm
- With a bore diameter d ≤ 45 mm, are most suitable for electric motors in the power range 0,15 to 15 kW as well as for power tools and high-speed drives
SKF hybrid deep groove ball bearings in this size range are the most cost-effective solution against electrical erosion.
Hybrid cylindrical roller bearings
- Are separable
- Are suitable for high speeds
- Accommodate heavy radial loads
- Accommodate axial displacement (fig. 1)
- Are commonly used in electric motors, especially traction motors, and in applications running under severe operating conditions
