6036M/C3VL0241 6036M/C3J20AA 180x280x46mm outer ring electric insulated bearing for engine

The so-called insulated bearings are that able to block the current through the bearing itself bearings general terms. Insulated bearings usually involve a special process in the bearing’s inner ring or outer ring coated with a layer of insulating material or its rolling body using ceramic made to ensure the insulating properties.

The first situation is where the shaft voltage of a motor or other energized device is high. In this case, if ordinary bearings are used, the shaft current may flow through the conductive path between the rolling elements and the track, which not only damages the bearings but may also lead to equipment failure. Therefore, insulated bearings become necessary in order to block this potential current path.
The second scenario occurs when there is a voltage difference between the motor’s housing and the ground. Due to the small potential differences that can exist between different materials, this can lead to a flow of current from a high potential to a low potential, creating a so-called ground leakage current. The use of insulated bearings effectively blocks these leakage currents and protects the motor’s insulation system from damage.