About the insulated bearings and ceramic bearings

In order to block and inhibition of shaft current, effective method is to use an insulated bearings. Is a ceramic roller bearing ( Ceramic bearing) Is one of the bearing insulation. Ceramic bearing is not only for insulation, it is the most meaningful object under the low temperature of bad lubrication and wear resistance, especially in the field of wind power use. The theory and practice have proved that all use the inverter power source drive motor ( Especially the large capacity) Than using grid power supply has a larger shaft current, and all of the unbalanced magnetic circuit of the motor, as well as motor driven by the pulley have larger shaft current. In order to prevent electric bright corrosion of bearing, insulation bearing should be used. Are not a lot of use, one reason is that knowledge of shaft current hazard problems, other price is higher, because the insulation bearing a lot of people to use in the small motor. In fact because of frequent replacement of bearing cost far more than using insulation bearing from the start. For the wind turbine, we can't afford to bet on, fix a machine you do more than enough.