Premium Electrical Insulation: Features a high-grade oxide coating (VL0241 standard) on the outer ring to effectively block stray currents and prevent electric pitting.
High-Grade Steel Construction: Manufactured using vacuum-degassed chrome steel, ensuring extended fatigue life and superior load-bearing capacity compared to standard bearings.
Robust Cage Design: Equipped with a durable stamped steel cage suitable for general industrial applications, ensuring stability under fluctuating loads.
Standardized Compatibility: Fully interchangeable with top-tier brands like SKF, FAG, and NSK for seamless upgrades.
TFL’s 6316/C3VL0241 is designed to be a direct, high-quality alternative to premium brands such as SKF (INSOCOAT), FAG (J20AA), and NKE (SQ77). We understand that when you consider switching brands, you prioritize reliability without the “big brand” markup. TFL offers significantly more competitive pricing, flexible MOQs that cater to both maintenance and production needs, and faster logistics to keep your downtime to a minimum. Our manufacturing flexibility also allows for customized specifications (like C4 clearance or brass cages) that major manufacturers often put on long lead times.
| TFL | SKF | FAG | NKE | NSK | NTN |
|---|---|---|---|---|---|
|
6316/C3VL0241
|
6316/C3VL0241
|
6316-J20AA-C3
|
6316-M-C3-SQ77
|
6316HDY2C3
|
7MC3-6316C3
|
Choosing the TFL 6316/C3VL0241 ensures your high-power motors are shielded from Electrical Discharge Machining (EDM). With our advanced plasma-spraying technology, the outer ring insulation remains stable even in humid environments, offering a dielectric strength of up to 3000V DC.
Outer Ring Insulation: Specifically coated to block currents up to 3000V DC
C3 Large Clearance: Accommodates high temperature gradients typical in industrial motors.
Standard Dimensions: 80mm Bore x 170mm OD x 39mm Width, adhering strictly to ISO standards.
Electrically insulated bearings like the 6316/C3VL0241 are primarily deployed in electric motors, generators, and frequency-controlled machinery to prevent the passage of damaging electrical currents through the bearing elements. In modern industrial settings, Variable Frequency Drives (VFDs) optimize energy consumption but introduce high-frequency stray currents. Without insulation, these currents discharge through the bearing, causing “fluting” (washboard-like patterns on raceways), grease degradation, and premature failure.
In the realm of general industrial automation, medium-to-large electric motors are the most frequent consumers of the 6316/C3VL0241. Specifically, this bearing is often positioned at the Non-Drive End (NDE) of motors ranging from 75kW to 160kW (Frame sizes 280-315), where radial loads are moderate but electrical risk is high due to VFD control. In the Siemens 1LA8 and 1LG6 series of cast-iron motors, the 6316 dimension is frequently specified for the NDE position. When these motors are retrofitted with frequency converters for conveyor belt or mixer applications, standard bearings fail quickly. Replacing them with 6316/C3VL0241 ensures that the high switching frequencies from the inverter do not erode the rolling elements.
The water and wastewater industry relies heavily on high-power pumps that must run continuously. These pumps are increasingly paired with VFDs to save energy, which introduces the risk of electrical discharge. In the KSB Omega series of double-suction centrifugal pumps and the Sulzer ZPP series of process pumps, the 6316/C3VL0241 is used to isolate the motor-pump shaft system. In these applications, the insulated coating prevents the electrolytic corrosion that can occur when bearings are exposed to both electrical currents and potential moisture.
The 6316/C3VL0241 is a staple in the maintenance and production of traction motors for locomotives and high-speed trains. In Bombardier (now Alstom) Traxx locomotives, the 6316 series insulated bearing is specified to ensure that the electrical power used for propulsion does not ground through the bearing, which would otherwise lead to immediate catastrophic failure during high-speed transit. This application is critical for passenger safety and schedule reliability.
*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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