Electrical Protection – Breakdown voltage up to 3000V. Blocks stray currents to prevent electrical corrosion.
Precision Design and High-Speed Capability – With a reference speed of 9500 r/min and precision grinding, it ensures low vibration and noise, ideal for high-speed VFD applications.
Reliable Quality – Compliant with ISO 9001 and REACH standards. The production process is fully traceable.
Service Response – All inquiries are answered within 24 hours.
TFL 6314M/C4VL0241 is fully compatible with SKF/FAG/NKE/NTN/NSK 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 |
|---|---|---|---|---|
| 6314M/C4VL0241 | 6314-M-J20AA-C4 | 6314-M-C4-SQ77 | 6314HDY2C3 | 7MC3-6314L1BC4 |
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.
Plasma Spray Technology — Creates a coating with excellent wear and heat resistance.
Outer-ring insulation (VL0241) — same dimensions as standard bearing, direct replacement.
Brass Cage – Self-lubricating properties significantly reduce friction and heat generation.
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 6314M/C4VL0241 is a critical component for the traction motors of high-speed trains and heavy-haul electric locomotives, such as those operating on CRRC Fuxing or Siemens Velaro platforms. In this demanding application, the C4 clearance is essential to accommodate the rapid thermal expansion of the rotor during aggressive acceleration and sustained high-speed running, while the Machined Brass Cage (M) provides the necessary structural integrity to survive the high G-forces and vibrations from the track. Capitalizing on China’s comprehensive industrial supply chain, TFL offers a distinct advantage in production agility for these specialized brass-cage bearings; we can deliver “Drop-in” replacements with lead times drastically shorter than European manufacturers, ensuring that railway operators can maintain fleet availability without waiting months for spare parts.
Designed for the large electric motors driving vibrating screens and crushers in mining operations, typically found in Metso or Sandvik equipment lines. These motors are subjected to extreme vibration and heat generation; standard steel cages often suffer fatigue failure, making the robust Machined Brass Cage mandatory for reliability. The C4 clearance prevents the bearing from seizing under the high operating temperatures common in mining pits. Furthermore, the VL0241 insulation serves as a vital safety feature for compliance with strict mining regulations (such as ATEX or MA standards); by preventing electrical arcing caused by VFD-induced shaft voltages, it eliminates a potential ignition source in environments filled with combustible coal dust or explosive gases.
Applicable to the heavy-duty inverter motors driving the run-out tables in hot rolling mills. In this environment, the motors are exposed to intense radiant heat from the passing red-hot steel slabs, which necessitates the C4 clearance to ensure sufficient internal space for thermal expansion without locking up. The 63-series design handles the heavy shock loads of the steel slabs, while the insulated outer ring protects the bearing from electrical fluting caused by the precise speed control of the Variable Frequency Drives. TFL provides a robust, dimensionally interchangeable solution that allows steel plants to extend maintenance intervals and reduce the total cost of ownership in these grueling conditions.
*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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