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The NKE 6222-M-C4-SQ77 is an electrically insulated ball bearing with a 110mm bore and 200mm outer diameter, designed to prevent electrical currents from damaging machinery. Its outer ring features a special coating (SQ77) that provides insulation, with a breakdown voltage of 1000-3000V.
This bearing handles dynamic loads up to 151kN and spins smoothly at speeds up to 6700 RPM. The brass cage ensures durability, while the C4 radial clearance offers flexibility in high-temperature or high-speed applications.
The insulation layer (100-500µm thick) resists electrical currents, making it ideal for electric motors or generators. With an electrical resistance of 50-200 MΩ, it effectively reduces stray currents.
Weighing 4.57kg, it’s a robust choice for industrial settings. Compliant with RoHS standards, it’s both safe and reliable for demanding environments.
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How Is 6222-M-C4-SQ77 Bearing Engineered for Reliability?
6222-M-C4-SQ77 Bearing features an insulating coating on the outer ring, preventing electrical damage in high-voltage environments.
The brass cage ensures smooth operation and reduces friction, even at high speeds up to 6,700 r/min.
With a basic dynamic load rating of 151 kN, 6222-M-C4-SQ77 Bearing handles heavy loads reliably.
Its breakdown voltage ranges from 1,000 to 3,000 V, making it suitable for electrically demanding applications.
The C4 radial internal clearance allows for thermal expansion, maintaining performance under varying conditions.
6222-M-C4-SQ77 Bearing’s coating thickness of 100-500 µm ensures consistent insulation and durability.
Common Applications of 6222-M-C4-SQ77 Bearing
The 6222-M-C4-SQ77 Bearing is widely used in electric motors and generators, where its insulation coating prevents electrical arcing. This makes it ideal for industries relying on high-voltage equipment.
In wind turbines, 6222-M-C4-SQ77 Bearing handles both radial and axial loads while resisting electrical damage. Its brass cage ensures smooth operation even in harsh weather conditions.
For railway systems, 6222-M-C4-SQ77 Bearing’s high breakdown voltage protects against stray currents. The C4 clearance allows for thermal expansion during long-distance travel.
Where Is 6222-M-C4-SQ77 Bearing Used?
You’ll often find 6222-M-C4-SQ77 Bearing in industrial pumps, where its insulation coating safeguards against electrical corrosion. The 200 mm outer diameter provides stable support for heavy-duty operations.
In manufacturing plants, 6222-M-C4-SQ77 Bearing works well in conveyor systems requiring electrical isolation. Its 151 kN dynamic load rating ensures longevity under continuous use.
Built for Heavy-Duty Use: 6222-M-C4-SQ77 Bearing
The 6222-M-C4-SQ77 Bearing excels in mining equipment, withstanding both mechanical stress and electrical interference. The 100-500 µm coating thickness offers reliable insulation.
For marine applications, 6222-M-C4-SQ77 Bearing’s corrosion-resistant materials perform well in salty environments. Its 6700 r/min speed rating suits high-RPM machinery.
Automotive vs Aerospace: Applications of 6222-M-C4-SQ77 Bearing
In electric vehicles, 6222-M-C4-SQ77 Bearing prevents motor damage from electrical currents. The 110 mm bore fits standard EV drivetrain components.
For aircraft systems, 6222-M-C4-SQ77 Bearing’s lightweight design (4.57 kg) reduces fuel consumption. The SQ77 coating meets aviation safety standards for electrical insulation.
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