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.
Brass Cage & High-Speed Capability – Solid brass cage (M) enables reference speeds up to 10000 r/min, offering superior heat and wear resistance for continuous high-load and frequent start-stop conditions.
Full Compatibility and Direct Replacement – Matching dimensions of SKF and FAG equivalents for seamless interchange, delivering equal reliability at a lower cost.
Ample Stock – Our self-owned factory ensures a large inventory, capable of fulfilling most orders.
TFL 6214M/C3VL0241 is fully compatible with SKF/FAG/NKE/NTN 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 | NTN |
|---|---|---|---|
| 6214M/C3VL0241 | 6214-M-J20AA-C3 | 6214-M-C3-SQ77 | 7MC3-6214C3 |
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.
High reference speed — up to 10000 r/min.
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 6214M/C3VL0241 is a preferred choice for the motors driving onboard air compressors and cooling fans in rolling stock, such as systems manufactured by Knorr-Bremse or Wabtec. In these mobile applications, the Machined Brass Cage (M) is non-negotiable as it withstands the constant track-induced shocks and sudden stops that would fracture a standard steel cage. Furthermore, the VL0241 insulation is a critical component for ensuring compliance with railway standards like EN 50155, which mandates strict protection against electromagnetic interference and stray currents in train electronic equipment, thereby preventing bearing failure in these safety-critical air supply units.
Designed for vertical electric motors powering cargo and ballast pumps on ocean-going vessels. The lighter 62-series design allows for higher rotational speeds required by these centrifugal pumps, while the sturdy brass cage provides superior resistance to the corrosion and pitch-and-roll vibrations inherent in marine environments. Leveraging China’s highly efficient industrial manufacturing base, TFL offers ship management companies a high-quality, cost-effective replacement strategy for maintaining aging fleets, allowing operators to reduce their Maintenance, Repair, and Operations (MRO) budgets without compromising on the durability required for long sea voyages.
This bearing is widely applicable to VFD-driven vertical in-line pumps used in chemical processing, such as the Flowserve ISO or Sulzer OH series. In vertical mounting arrangements, the Machined Brass Cage offers better guidance and lubrication distribution for the rolling elements compared to pressed steel cages, reducing the risk of cage rattle and wear. The C3 clearance accommodates the standard operating temperatures of electric motors, while the insulated outer ring effectively blocks the high-frequency currents generated by modern variable speed drives, preventing electrical erosion and ensuring the continuous, safe transport of volatile chemical fluids.
*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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