Alumina Coating: Breakdown voltage up to 3000V and resistance up to 200 MΩ.
Ample Stock: A stable supply chain and sufficient inventory enable us to fulfill most orders.
Competitive Pricing: Efficient sourcing channels allow us to offer more competitive pricing than the market average.
Reliable Quality: Compliant with ISO 9001 and REACH standards. The production process is fully traceable.
TFL 6336M/C4VL2071 has an interchange basis with SKF, FAG, and other insulated bearing types through its dimensions, C4 clearance, and VL2071 inner-ring insulation structure. VL2071 indicates an inner-ring insulation design for large motor and generator applications requiring shaft-side current isolation.
Compared with C3 clearance versions, C4 clearance is mainly selected for higher operating temperatures, greater thermal expansion, or applications requiring increased internal clearance. Replacement should verify the complete designation, insulation location, clearance class, and operating conditions.
| SKF | FAG |
|---|---|
| 6336M/C4VL2071 | 6336-M-J20C-C4 |
TFL focuses on electrically insulated bearing supply, providing model verification, interchange review, and delivery support for industrial buyers, motor repair teams, and distributors. For large VL2071 inner-ring insulated bearings such as 6336M/C4VL2071, we verify dimensions, C4 clearance, insulation location, cage type, and complete original designations to reduce selection errors.
TFL supports No MOQ, small maintenance orders, bulk purchasing, OEM/ODM, and consolidated shipments, helping customers meet high-temperature operation and electrical insulation requirements while reducing sourcing costs.
VL2071 inner-ring insulation — alumina ceramic coating applied to the inner ring for shaft-side electrical isolation.
Brass cage design — suitable for large industrial motor and generator applications.
C4 radial internal clearance — suitable for applications requiring increased clearance due to thermal expansion and temperature rise.
TFL 6336M/C4VL2071 electrically insulated deep groove ball bearing is suitable for large inverter motors, industrial generators, high-temperature continuous-duty electric drive systems, and other equipment where shaft current protection is required.
The VL2071 inner-ring insulation structure helps isolate shaft-side current paths and reduce electrical erosion risks. C4 clearance is suitable for large equipment with higher operating temperatures, greater thermal expansion, or increased internal clearance requirements.
Final selection should be verified by original dimensions, insulation location, clearance, fits, load, and speed.
TFL 6336M/C4VL2071 can be considered for bearing positions in large inverter motors, including industrial motor series such as ABB M3BP and Siemens 1LE0001.
During long-term operation of large VFD motors, shaft voltage may generate circulating currents through the bearing, causing electrical erosion at rolling contact areas. For motors operating with higher temperature rise and thermal expansion, the C4 clearance of 6336M/C4VL2071 provides additional operating clearance, while the VL2071 inner-ring ceramic insulation helps isolate shaft-side current paths.
TFL 6336M/C4VL2071 can be considered for bearing positions in large industrial generators and synchronous generator systems, including equipment types such as ABB industrial generators and Siemens Gamesa power generation systems.
During generator operation, magnetic field changes and rotor systems may generate shaft voltage, allowing the bearing to become a leakage path for electrical current. Compared with standard bearings, electrically insulated bearings help reduce the risk of current passing through rolling contact areas. The VL2071 inner-ring insulation of 6336M/C4VL2071 is suitable for generator applications requiring shaft-side electrical isolation and increased internal clearance.
TFL 6336M/C4VL2071 can be considered for high-temperature continuous-duty industrial drive systems, including metallurgy equipment, heavy machinery drive units, and large production line motor systems.
These applications often operate for extended periods and may experience temperature rise, thermal expansion, and electrical interference caused by variable-frequency control. The C4 clearance of 6336M/C4VL2071 supports applications requiring increased internal clearance, while the VL2071 inner-ring insulation helps reduce bearing damage risks caused by shaft currents.
*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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