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6220/C4VL0241 Electrically Insulated Ball Bearings

6220/C4VL0241 Electrically Insulated Ball Bearings

The picture shows an electrical insulated bearing 6220/C4VL0241. 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.

Reliable 100x180x34mm 6220/C4VL0241 Bearings for VFD Motors

  • C4 Internal Clearance: Engineered with C4 radial clearance (larger than C3), making it ideal for high-speed motor applications and environments with significant thermal expansion.
  • Standard Dimensions, Specialized Performance: Maintains standard ISO dimensions (100mm x 180mm x 34mm) for easy mounting while offering superior protection against electrical erosion.
  • Electrical Insulation Coating: Ceramic-coated outer ring (VL0241) effectively blocks harmful shaft currents.
  • OEM-Level Manufacturing: Precision grinding and strict quality control ensure consistency.
$ 364 /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 6220/C4VL0241
  • Equivalent Interchange 6220/C4VL0241 (SKF), 6220-J20AA-C4 (FAG), 6220-M-C3-SQ77 (NKE), 6220HDY2C3 (NSK), 7MC3-6220C3 (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 180.0 mm
  • Width 34.0 mm
  • Net Weight 3.17 kg
  • Basic Dynamic Load Rating 127.0 kN
  • Basic Static Load Rating 93.0 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 Sheet metal
  • Radial Internal Clearance C4
  • ROHS Compliant
  • REACH Compliant
6220/C4VL0241 Electrically Insulated Ball Bearings Drawing.dwg
Download DWG Download PDF

6220/C4VL0241 Equivalent Interchange Brands

TFL electrically insulated bearings are the perfect direct drop-in replacements for insulated bearings from major brands such as SKF, FAG, and NKE. We offer significantly more flexible Minimum Order Quantities (MOQs) and faster logistical responses than major brand distributors. By switching to TFL, you receive products that fully comply with ISO insulation and geometric accuracy standards, all while enjoying lower procurement costs and versatile customization services.
TFL SKF FAG NKE NSK NTN
6220/C4VL0241
6220/C4VL0241
6220-J20AA-C4
6220-M-C3-SQ77
6220HDY2C3
7MC3-6220C3

Why Choose TFL 6220/C4VL0241 Electrically Insulated Bearings?

TFL utilizes advanced plasma spraying technology to apply our aluminum oxide coating. This ensures an extremely strong mechanical bond between the coating and the bearing steel, making it highly resistant to peeling or flaking. Unlike generic market imitations, every single TFL 6220/C4VL0241 undergoes 100% insulation resistance testing before shipment, guaranteeing consistent insulation performance even in humid or damp environments.
The picture shows an electrical insulated bearing 6220/C4VL0241. Its outer ring has an insulating coating and the cage is made of steel.

Features of 6220/C4VL0241

  • Insulation: VL0241 coating provides a high breakdown voltage.
  • Clearance: C4 radial internal clearance for thermal stability.
  • Cage: Sturdy sheet metal cage for high-speed stability.
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Common Applications of Electrically Insulated Bearings

Electrically insulated bearings are critical for any rotating equipment prone to harmful circulating currents caused by Variable Frequency Drives (VFDs), induced voltages, or grounding issues. Installing these bearings blocks the current path, preventing Electric Discharge Machining (EDM) corrosion—often called “fluting”—on the bearing raceways.
electrically insulated bearing inside an electric vehicle traction motor, highlighting the ceramic coating layer.

Industrial Inverter-Duty Motors

In medium-to-large AC motors, especially those driven by VFDs, induced shaft voltages often create circulating currents. The insulated 6220/C4VL0241 is installed at either the Drive End (DE) or Non-Drive End (NDE) to cut this current loop. In applications like the Siemens Simotics SD (Severe Duty) series or ABB M3BP process motors, this insulation prevents premature failure, ensures reliability, and extends maintenance intervals.
Left side image shows a part of heating system, include a circulation pump. Right side image shows two insulated ball bearings.

Industrial Pumps and Compressors

Pump and compressor systems in water treatment, chemical processing, and HVAC applications utilize large motors facing similar electrical challenges. Additionally, fluid handling processes can sometimes generate static charges. Insulated bearings like the 6220/C4VL0241 prevent these currents from discharging through the pump's mechanical components. They are ideal for equipment such as KSB MegaCPK centrifugal pumps or Atlas Copco GA/GX screw compressors, preventing unexpected bearing seizure.

Railway traction motor bearing maintenance showing insulated bearing preventing electrical erosion

Rail Transit and EV Traction Motors

Traction motors in electric locomotives, trams, and industrial electric vehicles operate at high power levels with frequent acceleration and deceleration, leading to high common-mode voltages. In many designs, electrically insulated bearings are mandatory to isolate the rotor. These bearings are essential for rolling stock auxiliary drives or main traction motors—for instance, in inverter-fed motors for urban rail transit or drive systems in heavy-duty mining trucks.

*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

Does the VL0241 coating affect the installation of the bearing?

No. While the VL0241 coating is applied to the outer ring, the surface is precision-ground after the coating process to meet strict ISO tolerance standards. You can install the 6220/C4VL0241 into the housing just as you would a standard non-insulated bearing. However, please exercise caution: do not strike the coated surface directly with a hammer during installation, as this may chip or crack the ceramic insulation layer.

Can you provide custom packaging or laser mark our logo on the bearings?

Absolutely. We offer custom packaging and laser marking services to support the branding and logistical needs of our B2B clients. Please contact our sales team to discuss your specific requirements and the Minimum Order Quantities (MOQ) for customization options.
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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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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.

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