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NKE Electrically Insulated Ball Bearings 6312-M-C3-SQ77

NKE Electrically Insulated Ball Bearings 6312-M-C3-SQ77

The 6312-M-C3-SQ77 is an electrically insulated ball bearing with a 60mm bore and 130mm outer diameter, designed to prevent electrical currents from damaging machinery. It features a durable brass cage and can handle dynamic loads up to 85.2 kN.

Its outer ring has a special coating (SQ77) that provides insulation, with a breakdown voltage of 1000-3000V and high electrical resistance. This makes it ideal for use in electric motors or generators where stray currents are a concern.

The bearing operates smoothly at speeds up to 11000 r/min and works well under heavy loads. Its C3 radial clearance allows for thermal expansion in demanding conditions.

With a compact width of 31mm and weighing just 1.9kg, it’s a practical solution for industrial applications requiring electrical insulation. Compliant with RoHS standards for environmental safety.

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Product Parameters

  • Model 6312-M-C3-SQ77
  • Product Category Electrically Insulated Ball Bearings
  • Insulating Coating Types Insulation coating on outer ring
  • Coating Suffix SQ77
  • Manufacturers NKE
  • Bore Diameter 60.0 mm
  • Outside Diameter 130.0 mm
  • Width 31.0 mm
  • Net Weight 1.9 kg
  • Basic Dynamic Load Rating 85.2 kN
  • Basic Static Load Rating 52.0 kN
  • Reference Speed 11000 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 C3
  • ROHS Compliant
  • REACH Compliant
NKE Electrically Insulated Ball Bearings 6312-M-C3-SQ77 dimension drawing
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Features

How Is 6312-M-C3-SQ77 Bearing Engineered for Reliability?

6312-M-C3-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 11,000 r/min.

With a basic dynamic load rating of 85.2 kN, 6312-M-C3-SQ77 Bearing handles heavy loads reliably.
Its breakdown voltage range of 1000-3000 V makes it suitable for electrically demanding applications.

The C3 radial internal clearance allows for thermal expansion, maintaining performance under varying conditions.
6312-M-C3-SQ77 Bearing’s coating thickness of 100-500 µm ensures consistent insulation and durability.

Application

Industrial Uses of 6312-M-C3-SQ77 Bearing
The 6312-M-C3-SQ77 Bearing is commonly used in electric motors and generators, where its electrically insulated coating prevents current leakage. This makes it a reliable choice for industries dealing with high-voltage equipment.

What Makes 6312-M-C3-SQ77 Bearing a Preferred Choice?
With its brass cage and C3 radial clearance, 6312-M-C3-SQ77 Bearing handles high-speed operations smoothly, ideal for wind turbines and industrial pumps. The insulation coating also extends its lifespan in demanding environments.

Perfect Fit for Automation: 6312-M-C3-SQ77 Bearing
In robotic systems, 6312-M-C3-SQ77 Bearing ensures precise movement without electrical interference, thanks to its SQ77 coating. Its robust design suits repetitive tasks in automated production lines.

Medical vs Industrial: Where 6312-M-C3-SQ77 Bearing Excels
While 6312-M-C3-SQ77 Bearing is versatile for industrial machinery, its electrical insulation also benefits medical imaging devices. The coating ensures safety and reliability in sensitive applications.

Where Is 6312-M-C3-SQ77 Bearing Used?
You’ll find 6312-M-C3-SQ77 Bearing in HVAC systems and conveyor belts, where its insulation resists electrical damage. The high dynamic load rating makes it suitable for continuous operation.

Q&A

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