Machined Brass Cage (M): Features a robust solid brass cage that withstands high vibration, shock loads, and acceleration better than standard steel cages.
Outer Ring Insulation (VL0241): Premium plasma-sprayed ceramic coating on the outer ring acts as a barrier against damaging shaft currents up to 3000V DC.
C4 Radial Clearance: Specifically designed for applications with high temperature gradients and thermal expansion.
Corrosion Resistance: The ceramic coating also provides extra protection against housing corrosion.
The 6316M/C4VL0241 is a specialized, high-specification component often subject to long lead times from major brands like SKF, FAG, or NKE due to the specific combination of a Brass Cage and C4 Clearance. TFL fills this gap. We not only match the heavy-duty specifications (providing the same load ratings and electrical resistance) but also offer superior availability.
| TFL | SKF | FAG | NKE | NSK | NTN |
|---|---|---|---|---|---|
|
6316M/C4VL0241
|
6316M/C4VL0241
|
6316-M-J20AA-C4
|
6316-M-C4-SQ77
|
6316HDY2C3
|
7MC3-6316L1BC4
|
TFL 6316M/C4VL0241 is the specialized choice for environments where high vibration and high temperatures are the norm. By combining a heavy-duty brass cage with C4 clearance and an insulated outer ring, we provide a “fit-and-forget” solution for traction motors and heavy industrial gearboxes that demand maximum uptime.
Machined Brass Cage (Suffix M): Provides superior strength, lower friction at high speeds, and excellent dampening properties compared to pressed steel.
C4 Radial Clearance: Larger internal gap than C3; specifically engineered to compensate for high thermal expansion in the shaft or housing.
Standard Dimensions: 80x170x39mm
The 6316/C3VL2071, with its alumina-oxide coating on the inner ring, acts as a high-resistance barrier, ensuring the stray currents cannot complete a circuit through the rolling elements, thereby extending the service life of the entire drive system.
The railway industry relies heavily on electrically insulated bearings to manage the complex grounding paths found in electric trains. The 6316/C3VL2071 is specifically sized for the rotor shafts of traction motors used in light rail and metro systems. For example, CRRC subway traction motors utilize similar deep groove ball bearings where the inner ring coating prevents current from passing through the rolling elements during the frequent acceleration and regenerative braking cycles which generate significant electrical noise.
In the realm of general industrial automation, the 6316/C3VL2071 is a standard component for the Non-Drive End (NDE) of heavy-duty asynchronous motors, particularly those in the 75kW to 200kW power range (Frame sizes 280 to 315). For instance, in WEG W22 Mining Series Motors, the 6316/C3VL2071 is deployed to handle the high radial loads of belt-driven applications while isolating the rotor shaft from the grounded frame, effectively neutralizing the high-frequency switching currents typical of mining inverters.
Renewable energy systems are notorious for generating high-frequency harmonics that damage mechanical components. In wind turbines, specifically in the generator systems of double-fed induction generators (DFIG) found in models like the Vestas V80 or V90 platforms, the 6316/C3VL2071 serves as an ideal solution for the non-drive end of the generator or the high-speed stage of associated gearboxes. The inner ring insulation is vital here because these generators often utilize slip rings; if the grounding brushes wear down, the path of least resistance for the current becomes the bearing.
*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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