Electrical Isolation – Outer ring treated with plasma-sprayed aluminum oxide ceramic layer (100–500 μm thick), with breakdown voltage up to 3000V to sever shaft currents and prevent corrosion or lubricant failure.
TFL 6315-Z/C3VL0241 aligns precisely with SKF/FAG/NKE/NSK/NTN equivalents in specs, clearance, and insulation metrics, enabling installation without alterations. Every unit passes high-pressure endurance and dimensional precision checks, streamlining overall expenses while matching efficacy. Selecting TFL grants ISO-standard quality assurance and highly adaptive supply chain collaboration.
| SKF | FAG | NKE | NSK | NTN |
|---|---|---|---|---|
| 6315-Z/C3VL0241 | 6315-J20AA-C3 | 6315-M-C3-SQ77 | 6315HDY2C3 | 7MC3-6315C3 |
TFL is committed to innovative production of electrically insulated bearings, utilizing cutting-edge plasma-spraying to firmly bond the aluminum oxide ceramic layer for durable isolation efficacy. Holding ISO 9001:2015 certification, we allow elastic no-minimum-order supplies and cover full-process services from conceptual design to ongoing technical aid. Adopting TFL schemes not only yields affordable efficient products but also clearly reduces upkeep expenditures and operational interruption hazards.
Plasma spray alumina coating — uniform, high-bond ceramic layer (100–500 μm).
Z Metal Shield – Non-contact gap design minimizes friction torque, enabling higher speeds than rubber seals.
C3 Clearance – Optimized for electric motors to ensure smooth running under variable temperatures.
TFL is committed to innovative production of electrically insulated bearings, utilizing cutting-edge plasma-spraying to firmly bond the aluminum oxide ceramic layer for durable isolation efficacy. Holding ISO 9001:2015 certification, we allow elastic no-minimum-order supplies and cover full-process services from conceptual design to ongoing technical aid. Adopting TFL schemes not only yields affordable efficient products but also clearly reduces upkeep expenditures and operational interruption hazards.
TFL 6315-Z/C3VL0241 is a specific configuration often required for the drive-end of medium-voltage industrial motors (e.g., Siemens Simotics or ABB M3 series). In these designs, the Single Shield (Z) is crucial: it faces the motor windings to act as a barrier, preventing grease from migrating into the stator coils, while the open side allows for periodic re-lubrication from the motor’s grease reservoir. Leveraging the flexibility of China’s industrial manufacturing, TFL can supply this specific “Single Z” configuration rapidly, whereas European suppliers often stock only open or double-shielded versions, forcing customers to wait for customizations. This agility allows global motor repair shops to adhere to strict re-lubrication specifications without project delays.
Designed for the input shafts of heavy-duty helical or bevel gearboxes, such as those from SEW-Eurodrive or Flender, which are coupled to VFD-controlled motors. The 63-series handles the heavy radial and axial loads from the coupling, while the VL0241 insulation prevents stray currents from traveling from the motor shaft into the gearbox, protecting the delicate gear teeth and downstream bearings. Furthermore, as industries worldwide strive to meet Carbon Neutrality goals by upgrading to high-efficiency (IE4/IE5) inverter-driven systems, this insulated bearing serves as a key enabler, ensuring that the energy-saving VFDs do not cause collateral damage to the mechanical drivetrain.
Applicable to single-stage suction pumps used in water transport and chemical processing. The C3 clearance accommodates the thermal expansion of the 75mm shaft during continuous operation. The Single Shield (Z) is particularly useful here to separate the bearing internal lubrication from the external environment on one side, while allowing oil-mist or grease circulation from the housing on the open side. TFL’s insulated outer ring provides a robust defense against electrical fluting, ensuring reliable operation in automated, speed-controlled pumping stations where minimizing maintenance interventions is a priority.
*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.
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