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NKE Electrically Insulated Ball Bearings 6215-M-C4-SQ77

NKE Electrically Insulated Ball Bearings 6215-M-C4-SQ77

The 6215-M-C4-SQ77 is an electrically insulated ball bearing with a 75mm bore and 130mm outer diameter, designed to prevent electrical currents from passing through. Its outer ring features a special coating (SQ77) with a breakdown voltage of 1000-3000V, making it safe for high-voltage environments.

With a dynamic load rating of 68.9 kN and a reference speed of 10,000 RPM, it handles heavy loads while spinning smoothly. The brass cage ensures durability and reduces friction during operation.

The insulation layer (100-500µm thick) provides electrical resistance of 50-200 MΩ, protecting machinery from damage. Its C4 radial clearance allows for thermal expansion in demanding conditions.

Ideal for electric motors, generators, or wind turbines where electrical insulation is crucial. Compliant with RoHS standards, it weighs 1.21kg for easy handling.

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Product Parameters

  • Model 6215-M-C4-SQ77
  • Product Category Electrically Insulated Ball Bearings
  • Insulating Coating Types Insulation coating on outer ring
  • Coating Suffix SQ77
  • Manufacturers NKE
  • Bore Diameter 75.0 mm
  • Outside Diameter 130.0 mm
  • Width 25.0 mm
  • Net Weight 1.21 kg
  • Basic Dynamic Load Rating 68.9 kN
  • Basic Static Load Rating 49.0 kN
  • Reference Speed 10000.0 r/min
  • Breakdown Voltage (DC) 1000 ~3000 V
  • Layer Thickness 100~500 µm
  • Electrical Resistance 50~200 MΩ
  • Cage Material Brass cage
  • Radial Internal Clearance C4
  • ROHS Compliant
  • REACH Compliant
NKE Electrically Insulated Ball Bearings 6215-M-C4-SQ77 dimension drawing
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Features

How Is 6215-M-C4-SQ77 Bearing Engineered for Reliability?

6215-M-C4-SQ77 Bearing features an insulating coating on the outer ring, preventing electrical current damage.
The brass cage ensures smooth operation and reduces friction, even at high speeds up to 10,000 r/min.
With a breakdown voltage of 1000-3000 V, it is ideal for applications with electrical interference.
Its C4 radial internal clearance allows for thermal expansion, maintaining performance under varying conditions.

Application

Industrial Uses of 6215-M-C4-SQ77 Bearing
The 6215-M-C4-SQ77 Bearing is commonly used in industrial motors and generators, where electrical insulation prevents current leakage and reduces bearing damage. Its brass cage and C4 clearance ensure smooth operation even under high loads.

Where Is 6215-M-C4-SQ77 Bearing Used?
You’ll often find 6215-M-C4-SQ77 Bearing in wind turbines and electric vehicles, where its insulation coating protects against stray currents. The high dynamic load rating makes it reliable for long-term use in demanding environments.

Built for Heavy-Duty Use: 6215-M-C4-SQ77 Bearing
6215-M-C4-SQ77 Bearing handles heavy loads in industrial gearboxes, thanks to its robust construction and high breakdown voltage. The brass cage adds durability, making it a solid choice for continuous operation.

Automotive vs Aerospace: Applications of 6215-M-C4-SQ77 Bearing
In automotive systems, 6215-M-C4-SQ77 Bearing is used in hybrid vehicle motors, while aerospace applications benefit from its electrical insulation in avionics. The wide temperature range ensures performance in varied conditions.

Perfect Fit for Automation: 6215-M-C4-SQ77 Bearing
6215-M-C4-SQ77 Bearing works well in robotic arms and automated machinery, where electrical insulation prevents interference. Its high reference speed keeps operations smooth and efficient.

Q&A

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