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6216M/C4VL0241 Electrically Insulated Ball Bearings

6216M/C4VL0241 Electrically Insulated Ball Bearings

6216M/C4VL0241 TFL Electrically Insulated Bearings
The picture shows an electrical insulated bearing. Its outer ring has an insulating coating and the cage is made of brass.
The picture shows an electrical insulated bearing. Its outer ring has an insulating coating and the cage is made of brass.
The picture shows an electrical insulated bearing. Its outer ring has an insulating coating and the cage is made of brass.
The picture shows an electrical insulated bearing. Its outer ring has an insulating coating and the cage is made of brass.
The picture shows an electrical insulated bearing. Its outer ring has an insulating coating and the cage is made of brass.

Factory Wholesale for 6216M/C4VL0241 TFL Electrically Insulated Bearings

  • Precision: C4 clearance supports operations up to 8500 RPM, perfect for demanding high-speed machinery.
  • Insulation: Aluminum oxide layer offers up to 1000 V DC resistance, safeguarding against arcing and material degradation.
  • Compatibility: Direct replacement for leading brands like SKF, delivering reliable performance in electric motors and similar setups.
  • Cost-Effectiveness: Competitive pricing paired with adaptable order quantities, ideal for worldwide B2B procurement.
$ 1875 /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 6216M/C4VL0241
  • Equivalent Interchange 6216M/C4VL0241 (SKF), 6216-M-J20AA-C4 (FAG), 6216-M-C4-SQ77 (NKE), 6216HDY2C3 (NSK), 7MC3-6216C3 (NTN)
  • Product Category Electrically Insulated Ball Bearings
  • Coating Suffix VL0241
  • Insulating Coating Types Insulation coating on outer ring
  • Manufacturers TFL
  • Bore Diameter 80.0 mm
  • Outside Diameter 140.0 mm
  • Width 26.0 mm
  • Net Weight 1.71 kg
  • Basic Dynamic Load Rating 72.8 kN
  • Basic Static Load Rating 55.0 kN
  • Reference Speed 9500.0 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 C4
  • ROHS Compliant
  • REACH Compliant
6216M/C4VL0241 Electrically Insulated Ball Bearings Drawing.dwg
Download DWG Download PDF

6216M/C4VL0241 Equivalent Interchange Brands

TFL’s 6216M/C4VL0241 is an ideal interchange for insulated bearings from SKF, NTN, FAG, NKE, and NSK. It not only equals or surpasses their quality in combating electrical erosion but also delivers notable benefits like reduced costs, greater MOQ flexibility, expedited shipping, and enhanced customization for tailored needs.

 

TFL SKF FAG NKE NSK NTN
6216M/C4VL0241
6216M/C4VL0241
6216-M-J20AA-C4
6216-M-C4-SQ77
6216HDY2C3
7MC3-6216C3

Why Choose TFL 6216M/C4VL0241 Electrically Insulated Bearings?

Opt for TFL’s 6216M/C4VL0241 for exceptional defense against electrical currents in voltage-intensive settings, promoting prolonged machinery uptime and lower repair expenses. Its economical pricing, quick logistics, and seamless integration as a substitute for top-tier brands make it an optimal selection for B2B clients prioritizing value and dependability.
The picture shows an electrical insulated bearing 6216M/C4VL0241. Its outer ring has an insulating coating and the cage is made of brass.

Features of 6216M/C4VL0241

  • Enhanced Cage: Machined brass cage for improved strength and performance under high loads and speeds.
  • Optimized Internal Clearance: C4 internal clearance (with the “VL0241” indicating the insulation type) is specifically designed for applications experiencing higher operating temperatures or requiring greater running precision.
  • Integrated Ceramic Coating: Features a high-resistance ceramic coating on the outer ring surface, providing effective electrical insulation up to 3000V DC.
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Common Applications of Electrically Insulated Bearings

The 6216M/C4VL0241 features an insulating coating capable of withstanding kilovolt-level DC voltages. Its purpose is to block shaft currents or parasitic currents from passing through the rolling elements and cage, thereby preventing electrical erosion (fluting) and lubricant degradation. It is commonly used in rotating equipment equipped with Variable Frequency Drives (VFDs), subject to frequent starts and stops, or where shaft currents are likely to occur, such as motors, generators, wind turbine main shafts, and pump motors.
electrical insulated bearing for motor

Motor - DE/NDE

The 6216M model bearing is often used at the Drive End (DE) of electric motors to provide smooth rotation and load support, while also preventing vibration and managing axial loads at the Non-Drive End (NDE). The addition of the insulating coating serves to block stray currents caused by VFDs, avoiding internal arcing damage to the bearing, particularly during high-frequency operation. In specific Siemens motor frame sizes (Frame Size 180-225 range), such as the 1LG4 186 or 1LG6 207, selecting option code L27 configures an insulated bearing similar to the 6216M/C4VL0241 for installation at the Non-Drive End (NDE).
Electrically insulated deep groove ball bearings used for pumps

Pumps

When water pumps (especially models with built-in motors or integrated motor-pumps, such as submersible pumps, in-line pumps, and circulation pumps) are controlled by VFDs or experience grounding/electrical issues, shaft currents can damage the motor bearings. In motors paired with large industrial pumps, the 6216 is a common bearing model. In high-end water utility or HVAC applications, insulated bearings are used as an upgrade to prevent electrical corrosion caused by VFD control. For example, in Wilo's Helix V36 water pumps, using the 6216M/C4VL0241 insulated bearing can reduce early bearing failure caused by VFDs or electrolytic corrosion.

electrical insulated bearing for wind turbines

Wind Turbines

In the auxiliary motors of wind turbines or small-scale wind generators, 6216 insulated bearings are used at the Non-Drive End of Pitch Motors or Yaw Motors. These motors are responsible for adjusting blade angles or nacelle orientation and are precisely controlled via VFDs. The 6216M/C4VL0241 can also be used as the rotor bearing for small wind generators in the 100kW – 800kW class. Wind farms are typical high-frequency VFD environments; insulated bearings are utilized to prevent induced currents from damaging internal motor structures, thereby reducing the extremely high costs associated with high-altitude maintenance.

*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 do I know if I need a C3 or C4 internal clearance for my 6216 series bearing?

The choice between C3 and C4 internal clearance depends on your operating conditions. C3 clearance is suitable for standard operating temperatures and loads. C4 clearance (as in 6216M/C4VL0241) provides a larger internal space, making it ideal for applications with higher operating temperatures, heavier loads, or where increased thermal expansion is expected. Always refer to your equipment's specifications or consult with our experts for the best fit.

Can TFL 6216M/C4VL0241 be directly interchanged with other brands' insulated bearings?

Yes, TFL 6216M/C4VL0241 is designed for direct interchangeability with electrically insulated bearings of the same dimensions and specifications from leading brands like SKF, NTN, and FAG. Our bearings meet or exceed industry standards for performance and quality, offering a reliable and cost-effective alternative without requiring modifications to your existing equipment.
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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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