TFL 6218M/C3VL0241 is a direct replacement for equivalent insulated bearings from SKF/FAG/NSK/NTN/NKE. The “M” suffix indicates a machined brass cage, which combined with “VL0241” outer-ring insulation, matches international standards in geometry and performance. Every batch undergoes 100% dielectric and precision testing to ensure seamless installation in VFD systems.
| SKF | FAG | NKE | NSK | NTN |
|---|---|---|---|---|
|
6218M/C3VL0241
|
6218-M-J20AA-C3
|
6218-M-C3-SQ77
|
6218HDY2C3
|
7MC3-6218L1BC3
|
TFL focuses on solving bearing failures in complex industrial environments. Our 6218M/C3VL0241 utilizes industry-leading plasma ceramic coating combined with a high-strength machined brass cage, significantly extending service life in high-vibration and high-voltage conditions. Certified to ISO 9001, we offer no-MOQ ordering and expert technical support, aiming to provide the best balance of performance and cost for maintenance supervisors worldwide.
Machined Brass Cage (M) — Provides high strength, superior lubrication retention, and vibration damping.
C3 Radial Internal Clearance — Allows for thermal expansion and compensates for shaft deflection.
Resistance Range — 50–200 MΩ, ensuring zero shaft current leakage through the bearing.
TFL 6218M/C3VL0241 is designed for demanding heavy-industrial applications. Typical uses include VFD high-power motors in steel mills, paper machine dryer section drives, rail traction motors, and high-pressure centrifugal pumps. The stability of its brass cage excels in variable-speed systems with significant vibration or frequent start-stops, preventing downtime caused by electrical erosion.
TFL 6218M/C3VL0241 is suitable for heavy-duty motors over 200kW, such as Siemens 1LG4 or ABB M3GP series. In high-vibration environments, the machined brass cage offers better dynamic reliability than steel, and combined with 3000V insulation, it is the ideal choice for VFD systems in the cement and mining industries.
In large VFD-driven centrifugal pumps from KSB or Sulzer, TFL 6218M/C3VL0241 serves as a critical safeguard for the non-drive end. It withstands impacts from fluid pulsations and eliminates electrical erosion on raceways, acting as a reliable SKF 6218 M/C3VL0241 equivalent to increase system uptime.
In the MRO market for rail traction motors (e.g., matching specifications for Bombardier or Alstom systems), TFL 6218M/C3VL0241 provides excellent resistance to high-frequency pulse currents. Its solid brass structure ensures safety under high acceleration, making it a recommended insulation solution for modern AC rail drive systems.
*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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