are designed to prevent electric current from passing through the bearing
have the external surfaces of either their inner or outer ring coated with an insulating aluminium oxide layer, by applying a sophisticated plasma-spray process for an outstanding quality finish
are a very cost-effective solution compared with other insulation methods
Protection against electrical erosion
With insulating properties integrated into the bearing, INSOCOAT bearings can improve reliability and increase machine uptime by virtually eliminating the problem of electrical erosion.
High electrical resistance
The aluminium oxide coating provides a minimum electrical resistance of 200 MΩ and can withstand voltages up to 3 000 V DC.
Consistent electrical performance
Plasma-spray coatings are normally hygroscopic and, therefore, vulnerable to penetration caused by condensation. To protect against this effect, INSOCOAT bearings are treated with a unique sealant.
single row deep groove ball bearings (fig. 1)
single row cylindrical roller bearings (fig. 2)
For bearing types and sizes not listed in the product tables (→ Deep groove ball bearings, Cylindrical roller bearings), contact SKF.
For applications where smaller bearings than those listed are needed, SKF recommends using SKF Hybrid bearings.
Four-point contact ball bearings (fig. 3)
Flanged tapered roller bearings (fig. 4)
Tapered roller bearing units (TBU) (fig. 5)
Traction motor bearing units (fig. 6)
For availability and detailed information, contact SKF.