Electrical Isolation – The outer ring is coated with plasma-sprayed aluminum oxide layer (100–500 μm thick), offering breakdown voltage up to 3000V to isolate shaft currents and avoid electrical corrosion or lubricant deterioration.
High Speed Rating – Precision geometry minimizes friction, perfect for modern VFD motors.
TFL 6315M/C3VL0241 matches SKF/FAG/NKE/NSK/NTN equivalents perfectly in specifications, clearance, and insulation metrics, enabling installation without any modifications. Every unit is verified through high-pressure endurance and dimensional accuracy tests, optimizing overall costs while matching performance. Choosing TFL grants you ISO-standard quality assurance and highly adaptable supply chain collaboration.
| SKF | FAG | NKE | NSK | NTN |
|---|---|---|---|---|
| 6315M/C3VL0241 | 6315-M-J20AA-C3 | 6315-M-C3-SQ77 | 6315HDY2C3 | 7MC3-6315L1BC3 |
TFL focuses on innovative manufacturing in electrically insulated bearings, leveraging cutting-edge plasma-spraying to ensure tight bonding of the aluminum oxide ceramic layer for enduring reliable isolation. Holding ISO 9001:2015 certification, we enable flexible no-MOQ supplies and comprehensive services from conceptual design to post-sale technical aid. Adopting TFL solutions not only secures economical products but also effectively cuts repair expenses and equipment interruption risks.
Breakdown voltage (DC) — 1000–3000 V; electrical resistance 50–200 MΩ.
High reference speed — up to 9000 r/min.
Machined Brass Cage – Offers superior durability and shock resistance for heavy-duty applications.
TFL insulated bearings are commonly applied in VFD motors, generator units, pumping equipment, fan systems, and wind power fields. The ceramic layer reliably severs shaft current channels to cut down on electrical corrosion damage, particularly fitting for high-voltage and frequent speed variation conditions. These bearings aid machinery in maintaining efficient performance amid moist or oscillatory settings, markedly boosting overall system durability.
TFL 6315M/C3VL0241 is extensively used in the non-drive end of traction motors for metro and commuter trains, such as those found on CRRC or Siemens Mobility platforms. In this rugged application, the Machined Brass Cage (M) is strictly required to withstand the high shock loads and accelerations caused by track irregularities, ensuring the bearing does not disintegrate under stress. The VL0241 insulation protects the bearing from electric erosion caused by the traction inverter’s switching frequencies. By leveraging China’s robust industrial manufacturing base, TFL can offer these specialized brass-cage bearings with production turnaround times significantly faster than European competitors, providing global railway operators with a reliable “Drop-in” replacement solution to ensure fleet maintenance schedules are met without delays.
This bearing is designed for the heavy-duty electric motors driving main ventilation fans in underground coal or metal mines, typically manufactured by Howden or TLT-Turbo. These fans operate continuously under heavy radial loads, requiring the robust geometry of the 63-series combined with the stability of a Brass Cage to prevent catastrophic fatigue failure. The C3 clearance manages the operating temperature equilibrium. Crucially, the VL0241 insulated outer ring acts as a vital safety component; by blocking stray currents and preventing spark generation within the bearing, it helps mining operators strictly comply with ATEX or MA (Mining Safety) explosion-proof regulations, effectively mitigating the risk of ignition in methane-rich environments.
Applicable to API 610 compliant process pumps used in refineries and petrochemical plants. These pumps often handle high-viscosity or volatile fluids, placing significant stress on the motor bearings. The Machined Brass Cage offers superior wear resistance and durability in chemically aggressive atmospheres compared to steel cages. As major energy companies increasingly implement Supply Chain Resilience strategies to diversify risks, TFL guarantees 100% dimensional interchangeability and consistent quality, serving as a strategic “Second Source” to European brands. This ensures that critical refining processes remain operational even during global supply chain disruptions.
*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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