Alumina Coating: Breakdown voltage up to 3000V and resistance up to 200 MΩ.
Flexible MOQ: Low Minimum Order Quantity (MOQ). Supports both small-batch and large-volume orders.
Reliable Quality: Compliant with ISO 9001 and REACH standards. The production process is fully traceable.
Service Response: All inquiries are answered within 24 hours.
TFL 6330M/C3VL2071 can replace equivalent brass-cage inner-ring insulated bearings from premium global brands like SKF and FAG in physical dimensions, precision, and dielectric properties. Its “VL2071” (SKF) and “J20C” (FAG) suffixes identify the industry-standard inner-ring coating solution, enabling plug-and-play replacement without modifying the geometry of existing generators or VFD drives. Comprehensive dielectric strength testing prior to delivery ensures consistent field performance.
| SKF | FAG | NKE |
|---|---|---|
| 6330M/C3VL2071 | 6330-M-J20C-C3 | 6330-M-C3-SQ77E |
TFL is an integrated supplier focused on the field of industrial electrically insulated bearings. By building a refined supply chain evaluation system and ISO 9001 quality management processes, we ensure the supply of premium, internationally compliant large-scale transmission components to global users. By offering flexible support with zero MOQ, fast-turnaround warehousing delivery, and expert engineering analysis, TFL is dedicated to helping equipment engineers and procurement managers achieve high equipment uptime and optimal procurement value.
Machined Brass Cage (M) — High-strength mechanical design, ideal for heavy vibration and shock load conditions.
Heavy-duty 63 Series (150mm Bore) — Provides superior radial and bidirectional axial load ratings.
Inner Ring Insulation (VL2071) — Uniform plasma-sprayed alumina coating resisting up to 3000 V DC.
The TFL 6330M/C3VL2071 high-voltage insulated bearing is specifically supplied for severe heavy-industrial VFD drive applications. Typical uses include megawatt-class wind turbine generators, rail traction motor assemblies, large paper machine dryer cylinder gear shafts, and massive multistage centrifugal circulation pump systems with intense fluid impulses.
TFL 6330M/C3VL2071 can be applied in Vestas or Goldwind 3.0MW to 5.0MW wind turbine main generators. Its machined brass cage effectively withstands frequent inertial torque impacts from variable wind speeds, while the 3000V inner-ring insulation, with a smaller capacitive surface area, demonstrates superior high-frequency stray voltage blocking capability, extending the generator’s grid-connection operating cycle.
In the maintenance of rail traction power packs, the TFL 6330M/C3VL2071 is suitable for high-power traction AC motors from brands like Bombardier or CRRC. Its machined brass structure resists fracturing under continuous high-load vibrations, while the inner-ring insulation blocks electro-erosion damage caused by inverter common-mode voltages, guaranteeing steady train powertrain performance.
For high-speed paper machinery drive sections from brands like Valmet or Voith, operating under high heat, high humidity, and extreme static tension vibrations, the TFL 6330M/C3VL2071 is the ideal spare part for dryer and drive sections. Its brass cage provides excellent heat dissipation under long-term oil lubrication, and the high-hardness inner-ring insulation eliminates raceway scratches and control board interference caused by electrostatic discharges.
*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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