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6319M/C3VL0241 Electrically Insulated Ball Bearings

6319M/C3VL0241 Electrically Insulated Ball Bearings

The picture shows an electrical insulated bearing 6319M/C3VL0241. 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.
The picture shows an electrical insulated bearing. Its outer ring has an insulating coating and the cage is made of brass.

Best Insulated Bearing Dealer for 6319M/C3VL0241: Flexible MOQ & Faster Delivery

  • Durability: Features a robust machined brass cage and aluminum oxide coating, designed for long-lasting performance in high-voltage environments.
  • High Dimensional Precision: Manufactured strictly to ISO P6/P5 standards, ensuring a perfect fit for 95mm shafts and low-noise operation.
  • Insulation Protection: Offers electrical resistance up to 3,000 V DC, preventing damage caused by electric currents and extending bearing life.
  • Customization Flexibility: Available in variants such as 6319/C3VL0241 and 6319M/C4VL0241 to match specific clearance and application requirements.
$ 2310 /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 6319M/C3VL0241
  • Equivalent Interchange 6319M/C3VL0241 (SKF), 6319-M-J20AA-C3 (FAG), 6319-M-C4-SQ77 (NKE), 6319HDY2C3 (NSK), 7MC3-6319L1BC3 (NTN)
  • Product Category Electrically Insulated Ball Bearings
  • Coating Suffix VL0241
  • Insulating Coating Types Insulation coating on outer ring
  • Manufacturers TFL
  • Bore Diameter 95.0 mm
  • Outside Diameter 200.0 mm
  • Width 45.0 mm
  • Net Weight 6.52 kg
  • Basic Dynamic Load Rating 159.0 kN
  • Basic Static Load Rating 118.0 kN
  • Reference Speed 7000.0 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
6319M/C3VL0241 Electrically Insulated Ball Bearings Drawing.dwg
Download DWG Download PDF

6319M/C3VL0241 Equivalent Interchange Brands

As a superior alternative to equivalent models from SKF, NTN, FAG, NKE, and NSK, TFL’s 6319M/C3VL0241 electrically insulated bearing matches or exceeds quality standards for preventing electrical erosion in motors and generators. Furthermore, it delivers better value through significantly lower prices and more flexible minimum order quantities (with sample MOQs as low as one piece). TFL partners with rapid global logistics providers like DHL and FedEx to support custom coating or sizing options for unique B2B needs.
TFL SKF FAG NKE NSK NTN
6319M/C3VL0241
6319M/C3VL0241
6319-M-J20AA-C3
6319-M-C4-SQ77
6319HDY2C3
7MC3-6319L1BC3

Why Choose TFL 6319M/C3VL0241 Electrically Insulated Bearings?

TFL’s 6319M/C3VL0241 undergoes rigorous megohmmeter insulation testing. By combining the mechanical strength of a machined brass cage with advanced plasma-sprayed insulation technology, we provide a cost-effective core component that effectively protects expensive motors and prevents unexpected downtime.
The picture shows an electrical insulated bearing 6319M/C3VL0241. Its outer ring has an insulating coating and the cage is made of brass.

Features of 6319M/C3VL0241

  • Advanced aluminum oxide coating on the outer ring, providing superior electrical insulation up to 3,000 V DC.
  • Standard interchange dimensions: 95mm ID x 200mm OD x 45mm Width.
  • C3 Internal Clearance to prevent bearing seizure caused by motor temperature rise.
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Common Applications of Electrically Insulated Bearings

Electrically insulated bearings like the 6319M/C3VL0241 are commonly used in applications prone to electrical currents from VFDs or generators, where they prevent bearing pitting, lubricant degradation, and premature failure by blocking stray currents. This insulation role is crucial in maintaining operational efficiency and reducing maintenance costs across industries.

The picture shows the insulated bearings used on the motor.

Electric Motors

In electric motors, insulated bearings are typically used at the Non-Drive End (NDE) to prevent arcing caused by currents from Variable Frequency Drives (VFDs) or inverters. The 6319 series is commonly used in motors exceeding 75 kW, where higher power increases electrical risks. Siemens SIMOTICS GP (General Purpose) and SD (Severe Duty) series motors, in frame sizes 315-400 (4 to 8 poles), utilize 6319.C3 insulated bearings. In railway traction or industrial drive systems, this bearing supports shafts in high-voltage (up to 690V) setups, where the insulation layer prevents capacitive discharge.
The picture shows the insulated bearings used on wind turbines.

Wind Turbines

In wind turbines, insulated bearings are applied in generators or gearboxes, acting as a shield against stray currents from converters in variable-speed systems. This is critical for offshore or onshore wind farms, as electrical erosion accelerates wear; insulation improves sustainability by reducing maintenance in remote locations. Large Siemens Gamesa wind turbines employ insulated bearings to effectively prevent damage from high-voltage converters. Within gearbox assemblies, the 6319 bearing mitigates current flow (as discussed in patent literature), offering reliable protection for developers facing downtime issues.

The picture shows the insulated bearings used on pumps.

Pumps

In pump applications, the bearing’s insulation offsets currents generated by VFD-controlled motors (common in variable-speed pumps). This prevents corrosion in humid, highly conductive environments and improves efficiency by maintaining smooth rotation. In Grundfos TP/TPD vertical in-line pumps, motors exceeding 22 kW (6-pole) require insulated bearings to prevent harmful currents in HVAC or industrial circulation systems. The 6319 model supports the shaft in an electrically isolated configuration, thereby minimizing noise and improving the energy efficiency of building equipment.

*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

Can I replace a standard 6319 bearing with this one?

Absolutely. The dimensions (95x200x45mm) are identical. However, if your motor is controlled by a Variable Frequency Drive (VFD), we strongly recommend upgrading to the 6319M/C3VL0241. It serves not only as a physical replacement but also provides additional electrical insulation protection, preventing premature bearing failure due to current corrosion.

What should I watch out for when installing insulated bearings?

The most critical step is to protect the insulation coating on the outer ring from damage. Never strike the outer ring directly with a hammer during installation. We recommend using an induction heater to heat the inner ring for a shrink-fit installation. Additionally, ensure the bearing housing bore is clean, smooth, and free of burrs before installation to avoid scratching the insulation layer.
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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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