Flexible Delivery and Technical Support – No MOQ, with fast stock availability and one-on-one engineering consultation to ensure smooth selection and installation.
TFL 6215/C3VL0241 is fully compatible with SKF/FAG/NKE/NSK/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 | NSK | NTN |
|---|---|---|---|---|
| 6215/C3VL0241 | 6215-J20AA-C3 | 6215-M-C4-SQ77 | 6215HDY2C3 | 7MC3-6215C3 |
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.
Breakdown voltage (DC) — 1000–3000 V; electrical resistance 50–200 MΩ.
High reference speed — up to 10000 r/min.
C3 Clearance – Accommodates thermal expansion to prevent seizing during high-speed motor operation.
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 6215/C3VL0241 is widely used in the drive motors of large axial or centrifugal fans for commercial building ventilation, such as those produced by Systemair or FläktGroup. In these applications, the fan motors often run at high speeds to move large volumes of air; the lightweight design of the 62-series minimizes rolling resistance and heat generation, while the C3 clearance allows for thermal expansion during continuous operation. Leveraging the massive scale and efficiency of China’s bearing manufacturing sector, TFL provides these standard insulated bearings with a significant cost advantage and rapid availability compared to European suppliers. This enables HVAC maintenance contractors to competitively bid on large-scale facility management contracts (like airports or shopping malls) by reducing material costs without compromising on the insulation quality required for VFD-driven motors.
Designed for electric motors powering vertical or horizontal circulation pumps in district heating networks, typical of Grundfos or Wilo heavy-duty lines. These pumps handle hot water, transferring heat to the motor shaft, which makes the C3 clearance essential to prevent radial seizing. Furthermore, as strict environmental regulations like the EU Ecodesign Directive compel pump operators to install Variable Frequency Drives (VFDs) for energy efficiency, the risk of shaft voltages increases significantly. TFL’s VL0241 insulated outer ring acts as a critical compliance component, ensuring the motor system meets these energy-saving mandates safely by blocking stray currents that would otherwise cause premature bearing failure and system downtime.
This bearing is a standard fitment for the main motors of medium-sized rotary screw compressors (approx. 55kW – 75kW range), such as models from Ingersoll Rand. The Pressed Steel Cage is the industry standard for these steady-state applications, offering low noise and vibration levels. Since modern compressors rely heavily on VSD (Variable Speed Drive) technology to match air supply with demand, electrical erosion is a constant threat. TFL’s insulated bearing offers a direct, dimensionally interchangeable solution that protects the motor from “fluting,” extending the service life of the compressor air-end and matching the reliability standards of OEM specified bearings like SKF INSOCOAT or FAG Current-Insulated types.
*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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