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.
Service Response: All inquiries are answered within 24 hours.
TFL 6222M/C4VL0241 perfectly achieves direct replacement for equivalent insulated bearings from international brands like SKF/FAG/NSK/NTN/NKE in terms of dimensions (110x200x38mm), cage design, and C4 clearance standards. Every single unit passes 100% dielectric and dimensional testing before leaving the factory, ensuring “plug-and-play” installation and reliable lifespan in high-heat, high-impact environments such as paper mills and metallurgy.
| SKF | FAG | NKE | NSK | NTN |
|---|---|---|---|---|
|
6222M/C4VL0241
|
6222-M-J20AA-C4
|
6222-M-C4-SQ77
|
6222HDY2C3
|
7MC3-6222L1BC3
|
Manufacturing a bearing that combines a large bore (110mm), brass cage, C4 extra-large clearance, and an insulation coating represents the pinnacle of high-end bearing technology. As an ISO 9001 certified expert manufacturer, TFL employs imported high-purity alumina and patented temperature-controlled spraying processes to ensure the thermal stability and adhesion of large ceramic coatings in harsh, high-temperature conditions. We not only provide high-cost-performance products that rival or exceed original equipment, but also resolve your lead-time anxieties in urgent MRO procurement with our rapid delivery capabilities (Cost Savings).
Large-Bore Medium Series — 110 x 200 x 38 mm dimensions for substantial radial loads.
C4 Radial Internal Clearance — Essential for environments with extreme temperature gradients and heat transfer.
Outer-Ring Ceramic Insulation — Withstands up to 3000 V DC to completely stop high-frequency leakage currents.
TFL 6222M/C4VL0241 electrically insulated bearings are born for equipment operating under “extremely hot, extremely heavy, and complex electrical environments.” Typical applications encompass ultra-high-temperature dryer drives in paper machinery, main drives for hot strip mills in steel plants, large centrifugal compressors in chemical plants, and MW-class wind turbine main shafts in extreme climates. It is a core safeguard component for heavy-asset enterprises to prevent unplanned downtime under severe conditions.
In the dryer sections of modern large paper machines like those from Valmet, VFD motors continuously operate in extremely high steam-temperature environments. The C4 extra-large clearance of TFL 6222M/C4VL0241 perfectly absorbs the rapid thermal expansion conducted through the shaft system. Meanwhile, its 3000V-resistant insulation layer completely resolves inverter-induced electrical erosion, making it a recommended replacement for motor upgrades and overhauls in high-heat zones of paper mills.
In MW-class main drive motors used in steel plant hot rolling lines (such as those by Siemens or ABB), the motors frequently endure massive mechanical shocks from billet gripping and high radiant heat. The machined brass cage of TFL 6222M/C4VL0241 maintains excellent structural toughness during severe impacts. Combined with the anti-seizure C4 clearance and outer-ring anti-erosion ceramic coating, it ensures uninterrupted production for core metallurgical equipment under harsh thermodynamic conditions.
In large oil refining or air separation units, VFD-driven large multi-stage centrifugal compressors by MAN Energy Solutions are highly prone to high-frequency common-mode shaft currents. Serving as a critical support bearing with its robust 110mm bore load capacity, TFL 6222M/C4VL0241 utilizes C4 clearance to adapt to temperature rises during high-speed operation, while its VL0241 coating cuts off discharge loops, protecting the raceways from early flaking threats.
*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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