Alumina Coating: Breakdown voltage up to 3000V and resistance up to 200 MΩ.
Competitive Pricing: Efficient sourcing channels allow us to offer more competitive pricing than the market average.
Flexible MOQ: Low Minimum Order Quantity (MOQ). Supports both small-batch and large-volume orders.
Interchangeable: Compatible with SKF/FAG models for a perfect replacement.
TFL 6326M/C4VL0241 is a 100% equivalent and direct replacement for large-size heavy-duty insulated bearings from SKF and FAG in terms of mechanical dimensions (130x280x58mm), solid brass cage design (M), C4 clearance, and VL0241 parameters. During equipment overhauls or VFD upgrades, customers do not need to perform any secondary machining of the shaft journal or housing bore to achieve seamless plug-and-play installation. All delivered products pass rigorous dielectric strength and dimensional precision checks.
| SKF | FAG | NKE | NSK | NTN |
|---|---|---|---|---|
| 6326M/C4VL0241 | 6326-M-J20AA-C4 | 6326-M-C4-SQ77 | 6326HDY2C3 | 7MC3-6326L1BC3 |
Meeting the extreme industrial demand that overlays a “130mm large size, solid brass cage, C4 extra-large clearance, and insulation coating” relies on a premium supply chain. Backed by a robust high-end power transmission network and an ISO 9001 certified quality control system, TFL seamlessly integrates imported plasma ceramic spraying processes with precision large-bearing standards. We provide high-reliability anti-erosion products rivaling top global brands, backed by a professional engineering team for technical selection and diagnostic support. With rapid-response stock scheduling and No MOQ, TFL is dedicated to helping global clients eliminate lead-time risks on large specialized parts, achieving significant cost optimization.
C4 Extra-Large Clearance — Absolutely critical for surviving extreme temperature gradients and massive heat transfer.
Machined Brass Cage (M) — Provides extreme resistance to heavy vibration and ensures structural integrity under shock.
Outer-Ring Ceramic Insulation — Breakdown voltage up to 3000 V DC to reliably stop high-frequency leakage currents.
TFL 6326M/C4VL0241 is exclusively tailor-made for extreme heavy-industrial equipment facing massive loads, strong mechanical vibrations, extreme operating temperatures, and complex high-frequency VFD interference. Typical applications cover VFD main motors for large rotary kilns and heavy crushers in cement and mining, main drives for metallurgy hot strip rolling lines, and dryer drive motors in high-temperature paper machinery. Its robust brass cage grants the system superior vibration and impact toughness, the C4 extra-large clearance safely counteracts thermal expansion under extreme temperatures, and the outer-ring alumina coating perfectly cuts off high-frequency shaft voltages within standard housing seats to protect raceways.
In hot and cold rolling production lines at steel plants, MW-class main drive motors manufactured by Siemens or ABB are constantly exposed to high radiant temperatures and immense mechanical impacts when billets are gripped. The 280mm massive cross-section and robust brass cage of TFL 6326M/C4VL0241 effectively resist extreme impacts, while the C4 extra-large clearance safely accommodates internal expansion caused by heat surges. Its stable ceramic insulation prevents “arcing” erosion on the bearing raceways by parasitic currents, acting as a standard solution for the long-term operation of metallurgical equipment.
In the dryer sections of ultra-large paper machines by Valmet and Voith, giant drive motors operate year-round in extremely high-temperature steam environments. Using standard-clearance large bearings often leads to seizure as thermal expansion depletes the internal clearance. TFL 6326M/C4VL0241’s C4 extra-large clearance perfectly absorbs intense thermal stress conducted through the shaft, while the brass cage resists continuous vibration from the heavy-duty rolls. Concurrently, its 3000V outer-ring insulation entirely resolves inverter-induced electrical erosion, making it the top choice for motor overhauls in high-heat zones of paper mills.
In the main drive systems of large cement rotary kilns and heavy crushers by FLSmidth or Metso, the main motor endures feedback shocks from hundreds of tons of material alongside extreme heat conducted from the kiln body. TFL 6326M/C4VL0241’s 63 series ultra-heavy-duty structure provides unmatched radial support. The C4 clearance prevents seizure caused by continuous high-temp operations, while its insulated ceramic layer cuts off the discharge loop triggered by high-voltage VFD controls, ensuring the safe and continuous operation of heavy mining and cement equipment under extremely harsh conditions.
*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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