Excellent Electrical Insulation – The outer ring features a plasma-sprayed aluminum oxide coating (100–500 μm thick) with dielectric strength up to 3000V, blocking shaft currents to prevent electrical erosion and lubricant degradation.
Precision Design and High-Speed Capability – With a reference speed of 11000 r/min and precision grinding, it ensures low vibration and noise, ideal for high-speed VFD applications.
Full Compatibility and Direct Replacement – Matching dimensions of SKF and FAG equivalents for seamless interchange, delivering equal reliability at a lower cost.
Service Response – All inquiries are answered within 24 hours.
TFL 6312M/C3VL0241 is fully compatible with SKF and FAG equivalents in dimensions, clearance, and insulation performance, allowing direct replacement without equipment modifications. Each bearing undergoes rigorous dielectric testing and dimensional checks, offering equivalent reliability while reducing total ownership costs. Opting for TFL provides ISO-certified quality and flexible supply chain support.
| SKF | FAG | NKE | NSK | NTN |
|---|---|---|---|---|
| 6312M/C3VL0241 | 6312-M-J20AA-C3 | 6312-M-C3-SQ77 | 6312HDY2C3 | 7MC3-6312L1BC3 |
TFL specializes in the development and manufacturing of electrically insulated bearings, using advanced plasma-spraying technology to ensure a uniform aluminum oxide coating for long-term stable insulation. Certified under ISO 9001:2015, we offer flexible delivery with no MOQ and provide end-to-end services from design to technical support. Choosing TFL means accessing cost-effective products that reduce maintenance costs and downtime risks.
Interchangeable: Compatible with SKF/FAG/NKE/NSK/NTN models for a perfect replacement.
High reference speed — up to 11000 r/min.
Brass cage with C3 clearance — for enhanced radial play and reliability.
TFL insulated bearings are widely used in VFD motors, generators, pumps, fans, and wind turbine systems. The insulation coating blocks shaft current paths to minimize electrical erosion, making them ideal for high-voltage and variable-speed operations. Our bearings ensure stable performance in humid and vibratory conditions, extending overall system life.
TFL electrically insulated deep groove ball bearings 6312M/C3VL0241 are perfectly suited for medium-sized VFD-driven motors used in industrial pumps and ventilation fans, compatible with brands like Siemens and ABB. For example, in the motors of the ABB 200 size series, the 6312M/C3VL024 and 6312/C3VL024 series of electrically insulated bearings are often used at the D-end.
TFL’s VL0241 aluminum oxide coating on the outer ring provides insulation up to 3000V DC, effectively blocking these currents while offering a direct, cost-effective alternative to SKF INSOCOAT bearings.
This model, featuring a robust machined brass cage (M suffix), is highly recommended for cooling blower motors and air compressor motors in railway traction converters. Railway auxiliary systems operate under unstable power supply conditions where circulating currents and vibrations can destroy standard bearings rapidly.
TFL combines the mechanical durability of the brass cage with superior electrical insulation, ensuring reliability under the harsh operating conditions of CRRC or Alstom rolling stock maintenance requirements.
TFL 6312M/C3VL0241 bearings are applicable for inverter-driven rollers and main drive motors in continuous production lines found in paper mills and textile plants.Downtime in these continuous processes is extremely costly; stray currents caused by speed controllers frequently degrade lubricant quality, causing unexpected stoppages.
TFL’s insulated design prevents lubricant carbonization caused by electric arcing, significantly extending maintenance intervals and matching the performance standards of FAG J20AA coated bearings.
*The brands and series mentioned are provided for industry illustration only. Final bearing selection should be confirmed through verification of dimensions, clearance class, insulation type, and operating conditions. For selection assistance or technical consultation, please contact the TFL engineering team for support.
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