Are you still struggling to find compatible, cost-effective insulated bearings for your electric motors?
TFL Insulated Bearings provide a drop-in replacement for all mainstream INSOCOAT bearings — with verified compatibility, high insulation performance, and flexible customization.
- Fully interchangeable with SKF (VL0241, VL0246, VL2071, VL2076), FAG, NTN, NSK models.
- Insulation resistance ≥ 50MΩ @1000V DC — stable and reliable.
- Save 15–30% on procurement costs, with flexible OEM and custom coating services.
In short: Choose TFL for compatibility, reliability, and cost efficiency.
Why Compatibility Matters for Engineers and Buyers
When replacing insulated bearings in electric motors, inverters, or wind turbines, compatibility and performance stability are the top concerns — not the brand label. Mainstream brand models (such as SKF’s VL0241 or VL2071 suffix) are expensive, and limited supplier options lead to weak negotiating power and consistently high spare parts costs.
TFL Insulated Bearings are 100% interchangeable with SKF INSOCOAT and FAG J20AA series in terms of geometry, tolerance, and insulation performance.
No extra machining. No design modification. Just install and run.
| Parameter Comparison | SKF VL0241 | FAG J20AA | TFL VL0241 Equivalent |
|---|---|---|---|
| Insulation Resistance | ≥50 MΩ | ≥50 MΩ | ≥50 MΩ |
| Voltage Withstand | 1000V DC | 1000V DC | 1000V DC |
| Coating Thickness | 200 μm | 180–220 μm | 200 μm |
| Dimensional Tolerance | ISO 492 | ISO 492 | ISO 492 |
| Customizable | No | No | Yes |
(For more detailed model comparisons, please contact the TFL technical team)
Key Advantages of TFL Insulated Bearings:
- Cost-Effectiveness: Compared to international brands, TFL offers significant price advantages while ensuring equivalent or even superior performance, helping you effectively control procurement costs.
- Rapid Response and Delivery: Relying on localized production and efficient supply chain management, TFL can respond to your needs faster, shorten delivery cycles, and reduce downtime.
- Insulation Layer Thickness and Material Customization: Adjust the thickness of the insulation coating or select different ceramic materials based on specific application voltages and environmental requirements.
- Special Clearance and Precision Customization: Provides customization for various clearance classes (C0, C3, C4) and precision grades (P0, P6, P5) to ensure perfect matching between bearings and equipment.
Application Scenarios and Industry Standards
TFL electrically insulated bearings are widely used in industrial sectors with extremely high demands for equipment reliability.
- Wind Turbines: Main shaft and generator bearings in VFD-driven wind turbines effectively resist shaft currents, ensuring stable operation of wind farms and avoiding millions in losses due to bearing failures.
- Rail Transit: Traction motors and auxiliary system motors in electric trains ensure bearing reliability and service life in harsh operating environments, enhancing train operational safety.
- New Energy Vehicles: Motor bearings in electric drive systems meet insulation requirements under high speed and high power density, improving the reliability of electric vehicles.
- Industrial Motors and Pumps: Various motors, water pumps, and fans with VFD control in industries such as steel, chemical, and paper manufacturing significantly reduce maintenance frequency and costs.
- Mining Machinery: Motors for large-scale mining equipment resist electrical erosion in harsh conditions, reducing unplanned downtime.
TFL electrically insulated bearings strictly adhere to international standards such as ISO 281 and IEC 60034-1, ensuring that the product’s geometric accuracy (P6/P5 class), vibration and noise (Z3/V3 class), and insulation performance reach industry-leading levels. Our products have passed testing and certification by multiple third-party organizations, including TÜV Rheinland and SGS, providing you with reliable quality assurance.
TFL Insulated Bearing Series — Global Drop-in Replacements
TFL offers five main series of electrically insulated bearings that can replace major global models directly:
Electrically Insulated Deep Groove Ball Bearings
Electrically Insulated Cylindrical Roller Bearings
Electrically Insulated Tapered Roller Bearings
Spherical Roller Electrically Insulated Bearings
Customized Coated Solutions
Typical Interchange Table:
| TFL Model | SKF Equivalent | FAG Equivalent | NTN Equivalent | Application Feature |
|---|---|---|---|---|
| 6310M/C3VL0241 | 6310M/C3VL0241 | 6310-M-J20AA-C3 | 7MC3-6310L1BC3 | Standard motor bearing, 1000V insulation |
| 6312/C3VL0241 | 6312/C3VL0241 | 6312-J20AA-C3 | 7MC3-6312C3 | Wind turbine motor standard bearing |
| 6214M/C4VL0241 | 6214M/C4VL0241 | 6214-M-J20AA-C4 | 7MC3-6214C3 | For high-speed and high-temperature applications |
| 6313M/C3VL0241 | 6313M/C3VL0241 | 6313-M-J20AA-C3 | 7MC3-6313L1BC3 | For inverter-driven motors |
Compatibility covers: VL0241, VL0246, VL2071, VL2076 — and other major INSOCOAT bearing codes.
Consult the TFL-FAG-Insulated Bearing Cross-Reference now for easy TFL insulated bearing matches and hassle-free replacement!
(For more detailed model cross-reference, please contact the TFL technical team)
TFL Success Story: Wind Farm Motor Life Extended by 30%
A large wind farm experienced an average meantime between failures (MTBF) of only 2 years for its generator bearings due to shaft current effects, leading to high maintenance costs and power generation losses. With the assistance of the TFL technical team, the wind farm decided to replace all its generator bearings with TFL’s 6313/C3VL0241 electrically insulated deep groove ball bearings and NU220 ECM/C3VL0271 electrically insulated cylindrical roller bearings.
Result: After 3 consecutive years of operation, none of the TFL insulated bearings in this batch failed. Compared to traditional bearings, motor failure rates decreased by 25%, and MTBF extended by over 30%. According to the wind farm’s calculations, maintenance costs alone saved hundreds of thousands of yuan annually, while also increasing considerable power generation revenue. This case fully demonstrates the excellent performance and economic benefits of TFL electrically insulated bearings in practical applications.
Act Now to Optimize Your Equipment Performance!
Don’t let shaft current be a hidden danger to your equipment’s operation. Choose TFL electrically insulated bearings, and you will get reliable solutions, excellent product performance, and competitive prices.
Need a direct replacement for SKF or FAG insulated bearings?
Contact our engineering team to get your 1-on-1 compatibility list and instant quotation.
Email: info@sdtflbearing.com
We will offer you a complete list of interchangeable models, detailed technical specifications, and a highly competitive quotation.
Frequently Asked Questions
What voltage can TFL insulated bearings withstand?
Over 50 MΩ at voltages up to 1000V. For higher voltage applications, we can provide customized insulation solutions.
Will the insulation coating peel off?
No. TFL uses plasma spray + sealing process, achieving ≥4B adhesion and excellent resistance to humidity and temperature changes.
Can existing conventional bearings be processed into insulated bearings?
Yes. TFL offers post-coating services for existing bearing models, typically delivered within 7–10 days.
Does the insulation layer affect precision or load capacity?
No. All TFL insulated bearings maintain original ISO dimensional tolerances and dynamic load ratings.
Which brand models can TFL replace?
Fully compatible with SKF INSOCOAT (VL0241/VL2071), FAG J20AA, NTN 7MC series, NSK HDY, and others.
