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The FAG 6218-M-J20AA-C4 is a current-insulated bearing with a 90mm bore and 160mm outer diameter, designed to prevent electrical damage. Its outer ring features a ceramic coating, providing insulation up to 3000V.
This model handles dynamic loads up to 102kN and spins smoothly at speeds up to 8200 RPM. The brass cage ensures durability, while the C4 radial clearance offers flexibility in high-temperature applications.
The insulating coating maintains high resistance (50MΩ dry, 10MΩ damp), making it ideal for electric motors or generators. Its compact 30mm width and 2.57kg weight balance strength and portability.
Compliant with RoHS and REACH standards, it’s a reliable choice for industries where electrical insulation is critical. Perfect for wind turbines or industrial machinery exposed to stray currents.
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How Is 6218-M-J20AA-C4 Bearing Engineered for Reliability?
6218-M-J20AA-C4 Bearing features an outer ring ceramic coating, providing excellent insulation against electrical currents.
The brass cage ensures smooth operation and reduces friction, even at high speeds up to 8,200 rpm.
With a basic dynamic load rating of 102 kN, it handles heavy loads reliably in demanding applications.
The C4 radial internal clearance allows for thermal expansion, making it suitable for varying operating conditions.
Its breakdown voltage of up to 3,000 V and high electrical resistance prevent damage from stray currents.
This makes 6218-M-J20AA-C4 Bearing ideal for use in electric motors and generators.
Common Applications of 6218-M-J20AA-C4 Bearing
In industrial settings, 6218-M-J20AA-C4 Bearing is commonly used in electric motors and generators, where its current-insulating properties prevent electrical damage. The ceramic coating on the outer ring ensures reliable performance in high-voltage environments.
For wind turbine systems, 6218-M-J20AA-C4 Bearing helps manage electrical currents that can cause premature wear. Its brass cage and C4 clearance make it suitable for variable load conditions often encountered in renewable energy applications.
In railway traction motors, 6218-M-J20AA-C4 Bearing’s insulation capabilities protect against stray currents, extending service life. The high dynamic load rating also supports the demanding operational requirements of rail transport.
Where Is 6218-M-J20AA-C4 Bearing Used?
You’ll often find 6218-M-J20AA-C4 Bearing in industrial pumps, where its insulation properties guard against electrical corrosion. The 200 µm coating thickness provides durable protection in wet or damp conditions.
In conveyor systems, 6218-M-J20AA-C4 Bearing handles both radial and axial loads while preventing electrical arcing. Its 102 kN dynamic load rating ensures it can cope with continuous operation in material handling applications.
Built for Heavy-Duty Use: 6218-M-J20AA-C4 Bearing
6218-M-J20AA-C4 Bearing is a solid choice for mining equipment, where electrical insulation and high load capacity are both critical. The C4 radial clearance accommodates thermal expansion in harsh environments.
For steel mill machinery, 6218-M-J20AA-C4 Bearing’s ceramic coating resists electrical pitting from induced currents. Its 8200 r/min reference speed suits high-speed rolling mill applications.
Medical vs Industrial: Where 6218-M-J20AA-C4 Bearing Excels
While not typically used in medical devices, 6218-M-J20AA-C4 Bearing shines in industrial MRI power systems where electrical insulation matters. The 50MΩ dry resistance effectively blocks stray currents.
In factory automation, 6218-M-J20AA-C4 Bearing protects servo motors from damaging electrical discharges. Its 30mm width provides a compact solution for space-constrained motor designs.
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