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The NKE 6218-M-C4-SQ77 is an electrically insulated ball bearing with a 90mm bore and 160mm outer diameter, designed to handle both radial and axial loads. It features a brass cage and a special outer ring coating for electrical insulation.
With a dynamic load rating of 101kN and a static load rating of 73.5kN, it can withstand heavy loads while maintaining smooth operation. Its reference speed reaches 8500 rpm, making it suitable for high-speed applications.
The SQ77 coating provides excellent electrical resistance (50-200 MΩ) and breakdown voltage (1000-3000V), protecting against electric currents. The C4 radial clearance ensures reliable performance under varying thermal conditions.
Ideal for electric motors, generators, and other applications where electrical insulation is crucial. Compliant with ROHS standards, it’s a safe choice for industrial use. Weighing 1.26kg, it balances durability with manageable size.
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How Is 6218-M-C4-SQ77 Bearing Engineered for Reliability?
6218-M-C4-SQ77 Bearing features an insulating coating on the outer ring, preventing electrical damage and ensuring long-term reliability.
The brass cage enhances durability and maintains smooth operation even at high speeds.
With a breakdown voltage of 1000~3000 V, it effectively protects against electrical currents.
Its C4 radial internal clearance allows for optimal performance in various operating conditions.
Industrial Uses of 6218-M-C4-SQ77 Bearing
The 6218-M-C4-SQ77 Bearing is commonly used in industrial motors and generators, where electrical insulation is needed to prevent current leakage. Its brass cage and C4 clearance ensure smooth operation even under heavy loads.
What Makes 6218-M-C4-SQ77 Bearing a Preferred Choice?
In wind turbines, 6218-M-C4-SQ77 Bearing handles high speeds and electrical isolation, reducing downtime. The SQ77 coating provides reliable insulation, making it ideal for harsh environments.
Perfect Fit for Automation: 6218-M-C4-SQ77 Bearing
This bearing is a great match for robotic arms in automated production lines, where precision and electrical safety are key. Its high dynamic load rating ensures long service life.
Medical vs Industrial: Where 6218-M-C4-SQ77 Bearing Excels
While 6218-M-C4-SQ77 Bearing suits industrial gearboxes, it also works well in medical imaging devices needing electrical insulation. The coating resists wear, even in high-use scenarios.
Where Is 6218-M-C4-SQ77 Bearing Used?
You’ll find 6218-M-C4-SQ77 Bearing in electric vehicle motors, where its insulation properties prevent damage from stray currents. The robust design handles both radial and axial loads effortlessly.
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