High-Voltage Dielectric Protection – Plasma-sprayed alumina coating (100–500 μm) provides 1000–3000 V dielectric strength, preventing shaft-current-related fluting damage.
Solid Brass Cage for Thermal & Mechanical Stability – The M-design brass cage ensures excellent heat resistance and durability under vibration and fluctuating loads.
C4 Internal Clearance for High-Temperature Applications – Extra clearance supports thermal expansion and reliable high-speed rotation.
Full Interchangeability – Direct replacement for SKF 6212M/C4VL0241, FAG 6212-M-J20AA-C4, and NKE 6212-M-C4-SQ77, supported by TFL’s no-MOQ policy and fast delivery.
TFL 6212M/C4VL0241 matches SKF, FAG, and NKE equivalents in dimensions, tolerances, brass cage structure, and insulation performance. Every bearing is tested for dielectric strength (DC 1000–3000 V) and dimensional precision, ensuring full compatibility with improved cost efficiency and faster availability.
| SKF | FAG | NKE |
|---|---|---|
| 6212M/C4VL0241 | 6212-M-J20AA-C4 | 6212-M-C4-SQ77 |
TFL uses an advanced plasma-spraying process to form a dense and firmly bonded ceramic insulation layer, ensuring stable dielectric performance even under humidity, temperature fluctuations, and high-frequency VFD operation. Certified under ISO 9001, ROHS, and REACH, TFL supports OEM/ODM customization, no MOQ, and fast delivery—providing a cost-effective alternative to SKF and FAG while maintaining equivalent performance.
Plasma-sprayed alumina coating — 100–500 μm insulation layer
High speed — The reference rotation speed of the bearing is 13000 r/min
Outer-ring insulation (VL0241) — same size as standard 6212M
TFL 6212M/C4VL0241 is widely used in high-temperature VFD motors, generators, centrifugal pumps, compressors, power-plant auxiliary drives, and wind turbine generators. The insulation blocks shaft currents while the C4 clearance and brass cage support thermal expansion and heavy-duty operation.
TFL 6212M/C4VL0241 is suitable for Siemens 1LE0001 and ABB M3BP VFD motors. High temperature and PWM switching induce shaft currents; the C4 clearance and ceramic insulation maintain stability under these conditions (compatibility example only).
Applicable for Grundfos CR pumps, KSB Eta pumps, and Siemens industrial fans. High temperatures and humidity accelerate degradation in standard bearings, while the insulated outer ring and brass cage provide enhanced durability (illustrative example only).
TFL 6212M/C4VL0241 can be applied in Goldwind GW121/2500, Vestas V90, and Siemens Gamesa 2.3 MW turbine generators. Wind turbines face humidity, variable speeds, and temperature fluctuations; the ceramic insulation withstands up to 3000 V while the C4 clearance supports thermal movement (example only).
*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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