Electrical Protection: Breakdown voltage up to 3000V. Blocks stray currents to prevent electrical corrosion.
Variety of Types: Both C3/C4 and brass retainers, stamped steel retainers, are available for selection.
Motor Current Protection: Helps reduce bearing current damage, electrical erosion, and fluting in motor applications.
Replacement Matching: Cross-reference support for SKF INSOCOAT-type and same-size insulated bearing models.
TFL 6336M/C3VL2071 has an interchange basis with SKF, FAG, and other insulated bearing types through its dimensions, C3 clearance, and VL2071 inner-ring insulation structure. VL2071 indicates an inner-ring insulation design mainly used for large motor and generator applications requiring shaft-side current isolation.
Compared with VL0241 outer-ring insulated versions, VL2071 places the insulation coating on the inner ring. Replacement should verify the required insulation location, complete suffix, clearance class, cage type, and mounting conditions.
| SKF | FAG |
|---|---|
| 6336M/C3VL2071 | 6336-M-J20C-C3 |
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/C3VL2071, we verify dimensions, C3 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 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 continuous-duty industrial motor and generator applications.
Dielectric performance — 1000–3000 V DC breakdown voltage, 100–500 μm coating thickness, and 50–200 MΩ electrical resistance.
TFL 6336M/C3VL2071 electrically insulated deep groove ball bearing is suitable for large inverter motors, industrial generators, large 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. The C3 clearance and brass cage support continuous operation, temperature variation, and long-term load conditions.
Final selection should be verified by original dimensions, insulation location, clearance, fits, load, and speed.
TFL 6336M/C3VL2071 can be considered for large inverter motor equipment types, including Siemens 1LE0001 and ABB M3BP series.
Inverter-driven operation may generate shaft currents, allowing the bearing to become part of the current path and causing electrical erosion. The VL2071 inner-ring alumina ceramic insulation helps isolate shaft-side current paths and is suitable for replacement review where inner-ring insulation and C3 clearance are specified.
TFL 6336M/C3VL2071 can be considered for bearing positions in industrial generators and large synchronous generators, including equipment types from ABB generators and Siemens Gamesa wind generators.
Generator operation may create shaft voltage and circulating currents, which can affect standard bearings over long operating periods. The VL2071 inner-ring insulation bearing be considered during generator bearing replacement review.
TFL 6336M/C3VL2071 can be considered for bearing positions in large industrial drive systems, including equipment types such as metallurgy machinery, industrial fans, and large mechanical drive units.
These systems often operate continuously and may experience shaft current issues caused by variable-frequency control, load changes, and grounding conditions. The VL2071 inner-ring insulation structure helps reduce bearing damage risks caused by electrical current.
*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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