Reliable Electrical Protection: Breakdown voltage up to 3000 V — ideal for VFD motors.
Standard Dimensions: Built to international standards for direct replacement of same-model bearings.
Flexible MOQ: Low Minimum Order Quantity (MOQ). Supports both small-batch and large-volume orders.
Service Response: All inquiries are answered within 24 hours.
Fully interchangeable: The TFL 6309/C3VL0241 bearing matches SKF, FAG models in dimensions, precision, and insulation performance, enabling direct replacement.
Each TFL bearing undergoes strict dielectric and dimensional testing to ensure long-term operational stability and reliability.
Proven in VFD motor and industrial drive applications, TFL provides a reliable, cost-effective alternative to major brands,
delivering equal performance while significantly reducing the total cost of ownership (TCO).
| SKF | FAG |
|---|---|
| 6309/C3VL0241 | 6309-J20AA-C3 |
TFL use a plasma spray process to fuse a robust alumina coating onto the bearing’s outer ring. This layer not only offers a breakdown voltage of up to 3000V and a resistance of 200MΩ but also maintains the exact same mechanical properties as a standard bearing, supporting speeds up to 9500 r/min.
Plasma Spray Coating Technology – uniform, high-bond ceramic layer (100–500 μm).
High Reference Speed – up to 9500 r/min.
Alumina Coating: Breakdown voltage 1000V – 3000 V
We offer a variety of electric insulating bearings to choose from. The standard bearing classifications include deep groove ball bearings, cylindrical roller bearings, and tapered roller bearings. We have the standard bearing classifications shown below in stock and can deliver quickly.
The motor is the heart of an EV, and its bearings often fail prematurely due to electrical currents passing through them. Our insulated bearings are a highly cost-effective solution. Compared to insulating the entire motor, it’s more affordable. Compared to ordinary insulating paint, our plasma-sprayed coating is far more durable, providing long-lasting and reliable protection for your motor.
In industrial sectors such as steel, chemical, and power generation, various motors used to drive pumps, fans, and compressors, as well as those functioning as generators, also face the risk of current penetration through their bearings. These motors often operate continuously for long periods. Should a bearing fail due to electrical corrosion, it can lead to costly downtime losses and maintenance expenses.
For VFD-driven industrial pumps and fans where stray currents threaten reliability, our insulated bearings are the proven solution. They feature a specialized dielectric coating that safely interrupts the electrical path, preventing catastrophic bearing failure and costly downtime. This makes our bearings a fundamental component for ensuring the safe, continuous operation of your most vital systems.
*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.
Discover more related products for your needs. Check out our hot-selling bearing models that serve as trusted alternatives to major brands like SKF and FAG—offering the same performance with greater value.
"*" indicates required fields
"*" indicates required fields
"*" indicates required fields
