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6318M/C3VL0241 Electrically Insulated Ball Bearings

6318M/C3VL0241 Electrically Insulated Ball Bearings

Economical / Budget-Friendly 6318M/C3VL0241 - with Full Engineering Support

$ 311 /Each
  • Customized Logo: Min. Order 1 Piece
  • Customized Packaging: Min. Order 1 Piece
  • Inventory: In stock
  • Country of Origin: China
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Product Parameters

  • Model 6318M/C3VL0241
  • Equivalent Interchange 6318M/C3VL0241 (SKF); 6318-M-J20AA-C3 (FAG); 6318-M-C3-SQ77 (NKE); 6318HDY2C3 (NSK); 7MC3-6318L1BC3 (NTN);
  • Product Category Electrically Insulated Ball Bearings
  • Coating Suffix VL0241
  • Insulating Coating Types Insulation coating on outer ring
  • Manufacturers TFL
  • Bore Diameter 90.0 mm
  • Outside Diameter 190.0 mm
  • Width 43.0 mm
  • Net Weight 5.58 kg
  • Basic Dynamic Load Rating 151.0 kN
  • Basic Static Load Rating 108.0 kN
  • Reference Speed 7500.0 r/min
  • Breakdown Voltage (DC) 1000 ~3000 V
  • Layer Thickness 100~500 µm
  • Electrical Resistance 50~200 MΩ
  • Cage Material Brass cage
  • Radial Internal Clearance C3
  • ROHS Compliant
  • REACH Compliant

6318M/C3VL0241 Equivalent Interchange Brands

TFL 6318M/C3VL0241 is fully equivalent to SKF, FAG, and other mainstream INSOCOAT bearings in dimensional tolerances, heavy-load capacity, and dielectric properties. Its standardized outer-ring ceramic coating and machined brass cage ensure a plug-and-play direct replacement without modifying existing equipment structures. Every dispatched bearing passes strict voltage resistance tests, providing strong support for cost reduction and efficiency improvement.

SKF FAG NKE NSK NTN
6318M/C3VL0241
6318-M-J20AA-C3
6318-M-C3-SQ77
6318HDY2C3
7MC3-6318L1BC3

Why Choose TFL?

TFL specializes in the electrically insulated bearing sector, utilizing leading plasma-spraying technology to create a uniform and dense high-purity alumina ceramic coating on heavy-duty bearing outer rings. As an ISO 9001 certified manufacturer, we provide not only exceptional anti-erosion products but also full-cycle technical support. Whether you need OEM components or urgent MRO maintenance, TFL’s no-MOQ policy and fast delivery capabilities help you achieve cost savings while guaranteeing uncompromised quality.

Features of 6318M/C3VL0241

Common Applications of Electrically Insulated Bearings

TFL 6318M/C3VL0241 electrically insulated bearings are widely used in mining machinery, metallurgical rolling mills, high-power VFD motors, and heavy industrial pumps. These environments frequently face massive radial loads, intense shock vibrations, and shaft voltages generated by high-frequency inverters. With its robust brass cage and 3000V insulation, this model is the premier choice for enhancing equipment stability in extreme heavy-industrial scenarios.

siemens motor and insulated bearing for motor

Heavy-Duty Motors & Generators

TFL 6318M/C3VL0241 is suitable for ultra-high-power VFD motors such as the Siemens 1LE0001 and ABB M3BP series. In these machines, heavy loads and inverter harmonics often cause both mechanical and electrical failures in standard bearings. TFL’s brass cage and alumina ceramic insulation provide reliable protection while maintaining standard interchangeability, making it a recommended alternative to SKF INSOCOAT heavy-duty equivalents.

The picture shows the bearings of TFL, which are the electrically insulated ball bearings used in the pump.

Large Industrial Pumps

In VFD-controlled heavy centrifugal pumps by Sulzer and KSB used in mine dewatering or chemical plants, fluid pulsation and imbalance cause severe vibrations. TFL 6318M/C3VL0241 is highly recommended for the non-drive end of these units. The solid brass structure resists mechanical fatigue, while the VL0241 outer-ring insulation effectively cuts off the shaft current loop, preventing premature grease degradation.

Internal view of a wind turbine nacelle showing the generator and gearbox components requiring electrical insulation.

Wind Turbines

In the wind power sector, TFL 6318M/C3VL0241 can be applied in the yaw or generator drivetrains of MW-class turbine systems like Vestas and Siemens Gamesa. Such applications endure variable loads and must withstand electrostatic and stray current shocks. TFL’s coating resists up to 3000 V with extreme hardness, making it a recommended insulated, long-life solution for wind turbine overhauls and the MRO market.

*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.

Q&A

What is the main difference between 6318M/C3VL0241 and 6218M/C3VL0241?

Both models share the same bore size (90mm), but the 6318 is a heavy-duty series (Outer Diameter: 190mm) with a wider cross-section and larger balls than the 6218 (Outer Diameter: 160mm). Therefore, the 6318M/C3VL0241 can handle significantly higher radial loads and shocks, designed specifically for more demanding heavy industrial applications.

What is the unique advantage of the brass cage in TFL 6318M/C3VL0241 for heavy-duty equipment?

The machined brass solid cage (M) provides extremely high mechanical strength and generates minimal friction with the steel balls. In heavy VFD pumps or generators, it effectively damps high-frequency vibrations and prevents catastrophic bearing failure during temporary marginal lubrication conditions.

If my existing motor uses SKF 6318 M/C3VL0241, can I directly replace it with your model?

Absolutely. TFL 6318M/C3VL0241 is a direct replacement for the SKF equivalent. It 100% matches in dimensional tolerances, C3 large clearance, load capacity, and VL0241 electrical insulation properties, requiring zero structural modifications to the motor.
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