Reliable Quality: Compliant with ISO 9001 and REACH standards. The production process is fully traceable.
Electrical Protection: Breakdown voltage up to 3000V. Blocks stray currents to prevent electrical corrosion.
Variety of Types: Both C3/C4 and brass retainers, stamped steel retainers, are available for selection.
Service Response: All inquiries are answered within 24 hours.
TFL 6222M/C3VL0241 is a 100% match for mainstream large-bore insulated bearings from SKF/FAG/NSK/NTN/NKE in terms of mechanical specifications (110x200x38mm), brass cage design (M), and outer-ring insulation technology (VL0241). During motor overhauls or upgrades, customers can achieve direct replacement without any secondary machining of the shaft journal or housing. All products undergo 100% dielectric and dimensional precision testing before dispatch.
| SKF | FAG | NKE | NSK | NTN |
|---|---|---|---|---|
|
6222M/C3VL0241
|
6222-M-J20AA-C3
|
6222-M-C3-SQ77
|
6222HDY2C3
|
7MC3-6222L1BC3
|
Manufacturing heavy-duty specialty insulated bearings with bore sizes of 110mm and above demands exceptionally high production standards. Relying on advanced imported plasma-spraying equipment, TFL has successfully overcome the challenges of coating adhesion and uniformity on large outer rings. As an ISO 9001 certified premium supplier, we provide not only exceptional anti-erosion products but also professional technical support, ensuring global heavy-industry clients achieve significant procurement cost optimization while enjoying top-tier performance.
Large-Bore Medium Series — Dimensions 110 x 200 x 38 mm, balanced for high load capacity and stable speed.
Machined Brass Cage (M) — High wear resistance, highly recommended for environments with severe vibration.
Plasma-Sprayed Insulation — Uniform alumina coating with breakdown voltage guaranteed up to 3000V DC.
TFL 6222M/C3VL0241 is exclusively developed for extreme heavy-industrial scenarios facing large loads, strong vibrations, and complex electromagnetic interference. Typical applications cover high-power AC traction motors for rail transit, main drive motors for steel rolling mills, large industrial centrifugal compressors, and marine electric propulsor main shafts. With the physical toughness of the brass cage and the electrical blockage of the alumina coating, it serves as a reliable safeguard for the long-cycle, trouble-free operation of heavy machinery.
In AC traction motors of modern high-speed trains and heavy-haul locomotives by CRRC and Alstom, motors experience strong common-mode voltages from high-frequency inverters alongside severe mechanical shocks transmitted from the tracks. TFL 6222M/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 for traction motor overhauls.
VFD main drive motors (such as large units built by Siemens and ABB) in steel plant hot and cold rolling lines are continuously exposed to extreme high temperatures and frequent heavy-load start-stops. TFL 6222M/C3VL0241 utilizes a large C3 clearance to accommodate extreme thermal expansion in metallurgical environments. Its reliable ceramic insulation prevents "electrical arcing" erosion on the bearings, significantly improving the uptime of rolling production lines.
In podded electric propulsion systems like Wärtsilä or ABB Azipod used on modern large icebreakers and ocean-going Ro-Pax ferries, the main shaft support bearings must handle immense propulsion torque and inverter harmonic interference. Used at the non-drive end (NDE) of such MW-class drive motors, TFL 6222M/C3VL0241 maintains stable electrical isolation even under high-humidity, salt-fog conditions and complex stress, ensuring worry-free redundancy for marine power 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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