Electric Insulated Bearings: Models, Features, Classification & Applications
Electric insulated bearings are specially engineered anti-electric-erosion bearings designed for motors, generators and frequency conversion equipment affected by stray current. Featuring stable insulation performance, full current blocking and perfect interchangeability, these bearings effectively prevent electrical corrosion and grease aging, greatly prolonging service life. With complete insulation process types and full-size models, they are widely used in various high-speed electrical mechanical equipment.
1. Core Bearing Features
•Stable Electrical Insulation: Adopts professional insulation coating process, maintaining stable insulation performance without being affected by temperature, humidity and lubrication environment, ensuring long-term safe operation.
•Complete Electric Erosion Prevention: Fully blocks internal current paths, completely eliminates electrical pitting and bearing damage caused by stray current. The service life is 3–5 times longer than standard bearings and effectively avoids grease degradation.
•High Compatibility & Interchangeability: Consistent with standard bearings in overall dimensions and installation size, realizing direct replacement and no need to modify equipment structure.
2. Product Classification
Classified by professional insulation coating technology, electric insulated bearings are divided into two mainstream types for different industrial working conditions:
•Alumina-Coated Insulated Bearings: High cost-performance, stable insulation, suitable for most conventional industrial motors and general electrical equipment.
•Silicon (Si) Insulated Bearings: High-strength insulation layer, higher breakdown voltage and temperature resistance, ideal for high-power and high-speed precision electrical equipment.
3. Full-Series Mainstream Models
We supply a full range of electric insulated bearing models covering deep groove and roller bearing series for industrial motors:
Insulated Deep Groove Ball Bearings: 6205INS, 6206INS, 6208INS, 6305INS, 6306INS, 6308INS, 6310INS, 6210INS, 6212INS, 6008INS, 6010INS
Insulated Spherical Roller Bearings: 22208CAINS, 22210CAINS, 22212CAINS, 22312CCINS, 22314CCINS, 23124CAINS
Insulated Cylindrical Roller Bearings: NU208INS, NU210INS, NU212INS, NJ214INS, NU310INS, NU312INS
High-Voltage Insulated Special Models: 6314MINS, 22316MBINS, NU2216EMINS, large-size high-resistance insulated bearings for high-power generators
4. Application Scope
Electric insulated bearings are widely applied in equipment prone to stray current and electric corrosion, including industrial AC/DC motors, frequency conversion motors, wind power generators, high-speed fans, water pump motors and large power transmission equipment.
5. Product Advantages
Our electric insulated bearings feature stable all-weather insulation, reliable anti-electric-erosion ability and ultra-long service life. All standard models are fully interchangeable with ordinary bearings, helping customers reduce equipment failure rate and maintenance costs, providing efficient and professional bearing solutions for electrical machinery industry.
