Electrically Insulated Bearings

Insulated bearing (ceramic-coated bearings）refers to the ability to block the current through the bearing itself has insulating properties of the bearing of the general term. Its insulation performance is usually a special process in the bearing inner ring or outer ring coated with a protective layer of insulating material or its rolling body made of ceramic to achieve the purpose of insulation.

Insulated bearings are based on the type of bearings they belong to, and the bearings are insulated. Therefore, in addition to the original functions of all kinds of bearings, insulated bearings also have insulating properties. The most effective solution to the problem of current corrosion in bearings is the use of insulated bearings. Commonly, there are three types of insulated bearings: ceramic-coated, resin-coated, and ceramic rolling elements. Ceramic-coated bearings are the most widely used. This guide details what you need to know about insulated bearings!

6220M/C3VL0271 6220M/C3J20C 100x180x34mm inner ring insulated bearings for water pump

6220M/C3VL0241 6220M/C3J20AA 100x180x34mm inner ring insulated bearings for compactors

6221M/C3VL0241 6221M/C3J20AA 105x190x36mm inner ring insulated bearings for compactors

6221M/C3VL0271 6221M/C3J20C 105x190x36mm inner ring insulated bearings for wind turbine

6226M/C3VL0271 6226M/C3J20C 130x230x40mm inner ring insulated bearings for wind turbine

6226M/C3VL0241 6226M/C3J20AA 130x230x40mm inner ring insulated bearings for wind turbine

6228M/C3VL0241 6228M/C3J20AA 140x250x42mm inner ring insulated bearings for wind turbine

Special insulated cylindrical roller bearings for motors NU311 NU312EM1F1 J20B C4

80x170x39mm insulated deep groove ball bearing for wind power 6316 VL2071

Alternative famous insulated bearings for inverter motor 6319 6320M C3 VL0241

NU318 NU317EM1F1 J20AB Electrically insulated bearing for rail vehicles

6228M/C3VL0241 6228M/C3J20AA 140x250x42mm outer ring insulated bearings for wind turbine

Electrically insulated bearing for wind power 6316 6324M C3 VL0241

6216 6219M C3 VL0241 VL2071 Interchangeable insulated bearing with standard bearings

Top quality Current-insulating bearings with outer coating 6315 6314M C3 J20AA

6244M/C3VL0271 6244M/C3J20C 220x400x65mm inner ring insulated bearing for High Voltage Motors

6244M/C3VL0241 6244M/C3J20AA 220x400x65mm outer ring insulated bearing for High Voltage Motors

6317M/C3VL2071 6317M/C3J20AA 85x180x41mm inner ring insulated bearings for High Voltage Motors

6317M/C3VL0241 6317M/C3J20AA 85x180x41mm outer ring insulated bearings for High Voltage Motors

Ceramic Coated Insulated roller Bearing with discount NU219 NU220 ECM C3 VL2071

NU217 NU218ECM Current Insulating Bearings for electric motors

6318M/C3VL0241 6318M/C3J20AA 90x190x43mm outer ring insulated bearings for Variable Frequency Motors

6318M/C3VL2071 6318M/C3J20C 90x190x43mm inner ring insulated bearings for Variable Frequency Motors

Original brand insulated bearings for Wind Turbines 6340M C3VL0241 6336M C3VL2071

FAQ

Motor bearings play an important role in the efficient operation of motors. Even with strict production control during motor manufacturing, it is difficult to completely avoid magnetic asymmetry of the armature and rotor. This asymmetry generates a voltage between the stators. The current through the bearings is even worse, especially in AC motors. This current produces corrosion pits, fusion marks, galvanic corrosion marks, discoloration, abrasion and other damage on the bearing raceways and rolling element surfaces. Of course, motors with inverter and 0-converter technology also produce this phenomenon. In order to block the current flowing through the bearings, it is necessary to cut off the electrical circuit, so insulated bearings and insulated bearing housings are created.

1. Electric power industry: Insulated cylindrical roller bearings for generators, wind turbines, hydroelectric generators, and thermal generators. They are suitable for motors and generators, especially for variable frequency motors.

2. Railway industry: Insulated cylindrical roller bearings for diesel locomotive traction motors: used in locomotives, etc.

3. Machinery and metallurgical industry: Insulated bearings for high-power variable frequency motors: used in cranes, textile machinery, printing machinery, iron-making equipment, steel-making equipment, steel rolling equipment, cutting equipment, coking equipment, complete sets of smelting equipment, etc.

4. Mining machinery industry: Insulated bearings for high-power high-voltage motors, suitable for mining machinery, coal preparation machines, coal washers, crushers, ball mills, grinders, and sand mills

5. Petrochemical industry: Insulated bearings for high-power explosion-proof motors: used in compressors, etc.