Electrical Protection: Breakdown voltage up to 3000V. Blocks stray currents to prevent electrical corrosion.
Ample Stock: A stable supply chain and sufficient inventory enable us to fulfill most orders.
Competitive Pricing: Efficient sourcing channels allow us to offer more competitive pricing than the market average.
Alumina Coating: Breakdown voltage up to 3000V and resistance up to 200 MΩ.
TFL 6328M/C3VL0241 is a 100% equivalent and direct replacement for large-size heavy-duty insulated bearings from SKF and FAG in terms of dimensions (140x300x62mm), solid brass cage design (M), C3 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 | NTN |
|---|---|---|
| 6328M/C3VL0241 | 6328-M-J20AA-C3 | 7MC3-6328C3 |
Supplying large-bore insulated bearings with a 140mm bore poses strict demands on supply chain integration and precision tolerances. Relying on a robust premium industrial transmission supply chain network and a strict quality control system, TFL provides high-quality products that deeply integrate advanced coating processes with precision large-bearing standards. We provide high-reliability anti-erosion solutions rivaling top global brands, backed by a professional engineering team for technical selection and diagnostic support. With rapid-response stock availability and No MOQ, TFL is dedicated to helping global clients eliminate lead-time risks on large specialized parts, achieving significant cost optimization.
Heavy-Duty 63 Series Design — Dimensions 140 x 300 x 62 mm, designed for massive radial and axial load support.
Machined Brass Cage (M) — High-strength solid brass design, optimized for high vibration, severe shocks, and marginal lubrication.
Stable Electrical Resistance — Maintains 50–200 MΩ, efficiently eliminating VFD-induced raceway fluting.
TFL 6328M/C3VL0241 is exclusively developed for extreme heavy-industrial scenarios facing massive loads, strong mechanical vibrations, and complex high-frequency VFD interference. Typical applications cover VFD main motors for mining crushers and ball mills, heavy hot rolling table motors in metallurgy, large centrifugal chemical compressors, and marine main drive motors. Its robust brass cage grants the system superior vibration and impact toughness, while the outer-ring alumina coating perfectly cuts off high-frequency electrical loops introduced by VFD systems within standard housing seats to prevent raceway electro-erosion.
In large mining cone crushers and high-pressure grinding rolls by Metso or Sandvik, the accompanying ABB high-power high-voltage VFD motors must handle extremely violent load fluctuations and continuous severe vibrations. The ultra-high-strength solid brass cage (M) of TFL 6328M/C3VL0241 perfectly resists these brutal mechanical vibrations, while the 3000V outer-ring alumina insulation cuts off high-frequency shaft current loops. It is a highly recommended long-life insulated bearing solution for harsh mining conditions.
In hot and cold rolling production lines at steel plants, MW-class VFD main drive motors manufactured by Siemens are constantly exposed to high radiant temperatures and immense mechanical impacts when billets are gripped. TFL 6328M/C3VL0241 utilizes a C3 large clearance to safely accommodate internal thermal expansion in high-heat environments. Its solid brass cage eliminates the risk of fatigue fracture caused by severe impacts, while the outer-ring ceramic coating prevents galvanic damage, drastically reducing unplanned downtime in metallurgical transmission shafting.
In podded electric propulsion systems like Wärtsilä or ABB Azipod used on modern large ocean-going vessels, the main shaft bearings must handle immense propulsion torque and inverter harmonic interference. Used at the non-drive end (NDE) of such MW-class drive motors, TFL 6328M/C3VL0241 maintains stable, absolute electrical isolation under high-humidity, salt-fog conditions. The brass cage guarantees high-strength rotational guidance under complex wave flow fields, ensuring foolproof 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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