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6320/C3VL0241 Electrically Insulated Ball Bearings

6320/C3VL0241 Electrically Insulated Ball Bearings

The picture shows an electrical insulated bearing 6320/C3VL0241. Its outer ring has an insulating coating and the cage is made of steel.
The picture shows an electrical insulated bearing. Its outer ring has an insulating coating and the cage is made of steel.
The picture shows an electrical insulated bearing. Its outer ring has an insulating coating and the cage is made of steel.
The picture shows an electrical insulated bearing. Its outer ring has an insulating coating and the cage is made of steel.
The picture shows an electrical insulated bearing. Its outer ring has an insulating coating and the cage is made of steel.
The picture shows an electrical insulated bearing. Its outer ring has an insulating coating and the cage is made of steel.
The picture shows an electrical insulated bearing. Its outer ring has an insulating coating and the cage is made of steel.

Specialized Accessory for VFD Motors: TFL 6320/C3VL0241 Insulated Bearings In Stock

  • Electrical Insulation Protection: Aluminum oxide coating on the outer ring isolates current, blocking electrical erosion caused by stray currents.
  • Universal Dimensions: Standard 100 × 215 × 47 mm size, capable of replacing conventional 6320 models.
  • Compatibility: Achieves a 1:1 perfect replacement with major bearing brands without requiring equipment modifications.
  • Additional Parameter Options: 6320 M/C3VL0241, 6320/C4VL0241, and 6320/C3VL2071.
$ 2925 /Each
  • Customized Logo: Min. Order 1 Piece
  • Customized Packaging: Min. Order 1 Piece
  • Inventory: In stock
  • Country of Origin: China
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Bulk orders will be discounted, please contact our sales for a bulk quote. We will ship your order via FedEx within 3-5 working days after you complete the payment and the related information will be sent to your email.
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    Description Interchangeable Features Application Q&A Related products

Product Parameters

  • Model 6320/C3VL0241
  • Equivalent Interchange 6320/C3VL0241 (SKF), 6320-J20AA-C3 (FAG), 6320-M-C3-SQ77 (NKE), 6320HDY2C3 (NSK), 7MC3-6320C3 (NTN)
  • Product Category Electrically Insulated Ball Bearings
  • Coating Suffix VL0241
  • Insulating Coating Types Insulation coating on outer ring
  • Manufacturers TFL
  • Bore Diameter 100.0 mm
  • Outside Diameter 215.0 mm
  • Width 47.0 mm
  • Net Weight 6.98kg
  • Basic Dynamic Load Rating 182.0 kN
  • Basic Static Load Rating 140.0 kN
  • Reference Speed 6700.0 r/min
  • Breakdown Voltage (DC) 1000 ~3000 V
  • Layer Thickness 100~500 µm
  • Electrical Resistance 50~200 MΩ
  • Cage Material Sheet metal
  • Radial Internal Clearance C3
  • ROHS Compliant
  • REACH Compliant
6320/C3VL0241 Electrically Insulated Ball Bearings Drawing.dwg
Download DWG Download PDF

6320/C3VL0241 Equivalent Interchange Brands

TFL’s 6320/C3VL0241 electrically insulated deep groove ball bearings are the perfect equivalent to SKF (6320/C3VL0241), NTN, FAG (e.g., J20AA series), NKE, and NSK insulated variants. Not only do they match in quality and performance to prevent electrical erosion, but TFL also offers significant advantages, including lower prices for cost savings, more flexible Minimum Order Quantities (low MOQ), faster global logistics delivery, and customization options to meet specific B2B needs.
TFL SKF FAG NKE NSK NTN
6320/C3VL0241
6320/C3VL0241
6320-J20AA-C3
6320-M-C3-SQ77
6320HDY2C3
7MC3-6320C3

Why Choose TFL 6320/C3VL0241 Electrically Insulated Bearings?

The TFL 6320/C3VL0241 utilizes advanced insulation coating technology, forming a robust electrical barrier on the outer ring, which is sealed with resin to prevent moisture. Meanwhile, TFL offers OEM quality at wholesale prices. High compatibility with brands like SKF and NTN ensures seamless integration, shorter lead times, and customizable features.
The picture shows an electrical insulated bearing 6320/C3VL0241. Its outer ring has an insulating coating and the cage is made of steel.

Features of 6320/C3VL0241

  • 6320 bearing size: 100x215x47 mm.
  • VL0241 Aluminum oxide coating on the outer ring, breakdown voltage ≥ 1000V DC.
  • Single row deep groove ball bearing, easy to install without requiring special modifications to the bearing housing.
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Common Applications of Electrically Insulated Bearings

Electrically insulated bearings like the 6320/C3VL0241 are typically used in Variable Frequency Drives (VFD) or applications where high currents may cause bearing damage. The insulating coating acts as a barrier, preventing current flow between the shaft and housing, thereby reducing pitting, fluting, and premature failure while maintaining smooth operation.
electrical insulated bearing for motor

General Variable Frequency Motors

The 6320 bearing is commonly installed at the NDE of large low- or medium-voltage AC motors. Since high-frequency common-mode voltages generated by inverters attempt to find a grounding point through the motor shaft, current can break down the oil film if ordinary steel bearings are used. The 6320/C3VL0241 utilizes its outer ring insulation coating to cut off the circuit. The WEG W22 high-efficiency motor series employs this bearing at the NDE position in mining equipment (such as crushers and hoists), ensuring reliability under severe dust and high-load conditions. High current fluctuations in mining environments can easily damage bearings, and the electrical insulation performance of the 6320/C3VL0241 effectively isolates current paths.
The picture shows the application of TFL's electrical insulated bearings in the water pump motor of a seawater desalination plant.

Wastewater Pumps

Water pumps themselves are usually well-grounded, but the motor side can generate shaft voltage due to high-frequency modulation from the inverter. If motor bearings are not insulated, current may even conduct through the coupling to the pump-side bearings or directly damage the motor's rear bearing. Fluid handling equipment in continuous operation requires insulated bearings to prevent electrical corrosion. Sulzer AHLSTAR process pumps in the paper and pulp industry use the 6320/C3VL0241 at the drive end to reduce downtime caused by current failures. These pumps handle high-viscosity media, and current leakage under VFD drive is a common source of failure. Insulated bearings effectively block the current channel.

a railway and some insolated bearing used in traction motor

Rail Traction Motors

Traction motors for subways, light rail, or electric locomotives directly drive train wheelsets. Due to high voltage input from pantographs or third rails and the action of inverters, bearings face extremely high risks of electrical erosion. The 6320 is common in medium-sized traction motors (used for subways or trams). In traction motors supplied by ABB for Alstom TGV high-speed trains, this bearing is installed in the axle box position. With TGV speeds reaching 320 km/h and extremely high traction inverter currents, bearing electrical erosion is a common issue. The 6320/C3VL0241 effectively isolates current, reduces noise and vibration, improves train comfort, and extends maintenance intervals to 500,000 kilometers.

*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

How does TFL's 6320/C3VL0241 compare to original SKF products in terms of price and availability?

TFL offers equivalent quality but at a lower cost, with lower MOQs and faster shipping options, suitable for urgent B2B needs without sacrificing performance.

Can TFL's 6320/C3VL0241 be customized for specific operating conditions?

Yes, TFL offers customization, such as alternative clearances (e.g., C4) or cages (e.g., Brass in 6320 M/C3VL0241), as well as special coatings like VL2071 to enhance chemical resistance.
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We’re more than a supplier; we’re a manufacturing partner with 20+ years of R&D experience. Speak with our engineers, and you’ll find our expertise can solve your electrical erosion issues and significantly reduce long-term maintenance costs.
 
Email: info@sdtflbearings.com
Address: Room 501, Building 1, No. 4567, Tangye Middle Road, Jinan, China

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