Sweden brand equivalent 6414M/C3VL0241 6414M/C3J20AA 70x180x42mm electric insulated bearing for wind power

Because even if the production is strictly controlled during the manufacturing process of the motor, it is difficult to completely avoid the magnetic asymmetry of the armature and the rotor. This asymmetry will generate a voltage between the stator, which will generate a current passing through the bearings, especially for AC motors. The current is more serious in the bearing raceway and rolling element surface, causing corrosion pits, melt marks, electric corrosion filings, discoloration, wear and other damage. Of course, this phenomenon will also occur on motors using inverter and frequency conversion technology. In order to block this current from flowing through the bearing, it is necessary to cut off its circuit, so insulated bearings and insulated bearing chambers came into being. The insulated bearing chamber is made of insulating material with a certain hardness in the bore and end face of the bearing chamber.