Competitive Pricing: Factory-direct sales allow us to offer prices below the market average.
Electrical Protection: Breakdown voltage up to 3000V. Blocks stray currents to prevent electrical corrosion.
Reliable Quality: Compliant with ISO 9001 and REACH standards. The production process is fully traceable.
Variety of Types: Both C3/C4 and brass retainers, stamped steel retainers, are available for selection.
TFL 6224M/C3VL0241 is a 100% match for mainstream large-bore insulated bearings from SKF and FAG in terms of mechanical specifications (120x215x40mm), brass cage design (M), and outer-ring insulation technology (VL0241). During heavy motor overhauls or upgrades, customers can achieve direct replacement without any secondary machining of the shaft journal or housing. All products undergo rigorous dielectric and dimensional precision checks before dispatch.
| SKF | FAG | NKE | NSK | NTN |
|---|---|---|---|---|
|
6224M/C3VL0241
|
6224-M-J20AA-C3
|
6224-M-C3-SQ77
|
6224HDY2C3
|
7MC3-6224C3
|
Addressing the rigorous demands of 120mm large-bore heavy-duty insulated bearings, TFL relies on a robust high-end power transmission supply chain network and an ISO 9001 certified quality control system to seamlessly integrate imported high-purity alumina plasma spraying processes with precision heavy bearings. We not only provide high-reliability anti-erosion products that rival or exceed top global brands but also equip you with a professional engineering team for comprehensive selection and diagnostic support. With flexible No MOQ services and rapid delivery capabilities, TFL is dedicated to helping global industrial clients eliminate lead-time anxieties during urgent maintenance, achieving significant cost savings.
Large-Bore Medium Series — Dimensions 120 x 215 x 40 mm, robustly supporting substantial radial loads.
Machined Brass Cage (M) — Outstanding wear resistance, highly recommended for heavy shock and high-vibration environments.
Plasma-Sprayed Insulation — High-bond alumina coating ensuring a breakdown voltage of up to 3000 V DC.
TFL 6224M/C3VL0241 is exclusively developed for extreme heavy-industrial scenarios facing large loads, strong vibrations, and complex high-frequency VFD interference. Typical applications cover high-power AC traction motors for rail transit, main drive motors for steel rolling mills, large high-pressure mining pumps, and marine electric propulsor main shafts. With the physical toughness of the brass cage and the electrical isolation of the alumina coating, it serves as a safety barrier for the long-cycle, trouble-free operation of heavy machinery.
In AC traction motors of heavy-haul locomotives and intercity high-speed trains by CRRC and Alstom, equipment must withstand not only high-frequency common-mode voltages from traction inverters but also direct severe mechanical shocks transmitted from the tracks. TFL 6224M/C3VL0241’s solid brass cage perfectly resists mechanical vibration, while the 3000V insulation coating completely cuts off shaft current leakage loops. It is a highly recommended safety upgrade component for traction motor overhauls.
In VFD main drive motors (such as large equipment built by Siemens and ABB) for hot strip mills in steel plants, motors are continuously exposed to radiant high temperatures and frequent heavy-load start-stops. TFL 6224M/C3VL0241 utilizes a C3 large clearance to safely accommodate thermal expansion in metallurgical environments. Its extremely reliable ceramic insulation prevents "electrical arcing" erosion on the bearing raceways by parasitic currents, significantly improving the uptime of rolling production lines.
In podded electric propulsion systems like Wärtsilä or ABB Azipod used on modern large ocean-going vessels, the main shaft support bearings must handle immense propulsion torque and inverter harmonic interference. Used as a critical support point in such MW-class drive motors, TFL 6224M/C3VL0241’s brass cage provides high-strength rotational guidance under complex sea conditions, while the outer-ring insulation guarantees electrical isolation for the power system, ensuring worry-free redundancy for ocean navigation.
*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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