Breakdown Voltage Protection: Guaranteed 1000-3000 V DC resistance to block stray currents effectively.
Anti-Fretting Design: Reduces raceway damage caused by electrical discharge (EDM).
Versatile Material Options: Available in standard steel or 6217M/C3VL0241 with a machined brass cage for heavy-duty vibration.
Moisture-Resistant Sealing: The oxide coating is sealed with a unique resin to prevent the ingress of humidity, ensuring dielectric strength is maintained in damp environments.
TFL’s 6217/C3VL0241 serves as a high-precision, direct replacement for international benchmarks such as SKF, FAG, and NSK. TFL offers equivalent technical performance at a more accessible price point, coupled with flexible order quantities and rapid logistical response. Whether dealing with urgent maintenance or large-scale OEM assembly, the 6217/C3VL0241 from TFL provides the same reliability as major brands while optimizing the overall procurement budget and supply chain efficiency.
| TFL | SKF | FAG | NKE | NSK | NTN |
|---|---|---|---|---|---|
| 6217/C3VL0241 | 6217/C3VL0241 | 6217-J20AA-C3 | 6217-M-C3-SQ77 | 6217HDY2C3 | 7MC3-6217C3 |
TFL utilizes advanced plasma-spraying technology to ensure the insulation layer remains consistent even under extreme thermal stress. Every batch undergoes 100% dielectric testing to verify the 1000V DC threshold, ensuring that the 6217/C3VL0241 provides maximum protection against electrical erosion. TFL offers a comprehensive range, including heavy-duty variants like 6217M/C3VL0241 (Brass Cage), allowing customers to source all their insulated bearing needs from a single, reliable partner known for high cost-performance capability.
VL0241 Insulation Technology: A 100-500 µm layer of Aluminium Oxide is applied to the outer ring, providing resistance > 1000V DC, specifically designed for inverter-fed motors.
Standardized Dimensions: With an 85x150x28mm size, it fits standard NDE (Non-Drive End) housings of 45kW-90kW motors without modification.
Corrosion-Resistant Coating: The insulation layer also provides a secondary benefit of protecting the outer ring from moisture and surface oxidation.
The TFL 6217/C3VL0241 is a staple component in medium-sized low-voltage electric motors (typically 45kW to 90kW) driven by Variable Frequency Drives (VFDs). It is most commonly installed on the Non-Drive End (NDE) to break the path of circulating bearing currents.
Large industrial ventilation systems often employ high-efficiency process performance motors. The 6217/C3VL0241 is frequently used in the non-drive end of motors similar to the ABB M3BP Process Performance series (frame size 250 or 280). When these motors are controlled by inverters to regulate air flow, stray currents are generated. This bearing prevents electrical arcing that would otherwise destroy the raceways, ensuring continuous air supply in factories.
In water treatment and chemical processing, severe duty motors drive centrifugal pumps. The Siemens Simotics SD (Severe Duty) motor series (specifically frame size 280) often utilizes 6217 bearings. The TFL 6217/C3VL0241 protects these critical pump motors from electrical erosion caused by the frequency converters used to optimize pump speed and energy consumption, preventing costly pump failures.
Rotary screw air compressors typically use electric motors that run continuously. In models utilizing motors around the 75kW mark, such as those found in Atlas Copco compressor units, VFDs are standard to match air demand. The 6217/C3VL0241 serves as a reliable replacement bearing that withstands the thermal loads and electrical stresses, ensuring the compressor facility maintains consistent air pressure without bearing-related downtime.
*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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