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NKE Electrically Insulated Ball Bearings 6226-M-C4-SQ77
NKE Electrically Insulated Ball Bearings 6226-M-C4-SQ77

NKE Electrically Insulated Ball Bearings 6226-M-C4-SQ77

The NKE 6226-M-C4-SQ77 is an electrically insulated ball bearing with a 130mm bore and 230mm 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 156kN and spins smoothly at speeds up to 5600 RPM. The brass cage ensures durability, while the C4 radial clearance allows for thermal expansion in demanding conditions.

The insulation layer (100-500µm thick) offers high electrical resistance (50-200 MΩ), making it ideal for electric motors or generators. It’s also RoHS compliant for safe use.

Weighing 1.26kg, this robust bearing suits industrial applications where electrical insulation is critical, such as wind turbines or conveyor systems.

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Product Parameters

  • Model 6226-M-C4-SQ77
  • Product Category Electrically Insulated Ball Bearings
  • Insulating Coating Types Insulation coating on outer ring
  • Coating Suffix SQ77
  • Manufacturers NKE
  • Bore Diameter 130.0 mm
  • Outside Diameter 230.0 mm
  • Width 40.0 mm
  • Net Weight 1.26 kg
  • Basic Dynamic Load Rating 156.0 kN
  • Basic Static Load Rating 132.0 kN
  • Reference Speed 5600.0 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

Features

How Is 6226-M-C4-SQ77 Bearing Engineered for Reliability?

6226-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, enhancing durability.
With a basic dynamic load rating of 156.0 kN, it handles heavy loads efficiently.
Its breakdown voltage of 1000~3000 V makes it ideal for electrical applications.

What Makes 6226-M-C4-SQ77 Bearing Suitable for High-Temperature Applications?

6226-M-C4-SQ77 Bearing is designed with a robust brass cage, maintaining stability under high temperatures.
The insulation coating resists electrical currents, ensuring reliable performance in demanding conditions.
Its reference speed of 5600.0 r/min allows for high-speed operations without compromising safety.
The C4 radial internal clearance accommodates thermal expansion, reducing wear.

Built for Reliability: 6226-M-C4-SQ77 Bearing

6226-M-C4-SQ77 Bearing’s insulating coating provides protection against electrical currents, extending its service life.
The brass cage minimises friction, ensuring smooth and quiet operation.
With a basic static load rating of 132.0 kN, it offers dependable performance under heavy loads.
Its electrical resistance of 50~200 MΩ makes it suitable for sensitive applications.

Steel vs Ceramic Bearings: Strengths of 6226-M-C4-SQ77 Bearing

6226-M-C4-SQ77 Bearing combines the durability of steel with an insulating coating for electrical resistance.
The brass cage enhances performance, reducing wear and tear over time.
Its layer thickness of 100~500 µm ensures consistent insulation properties.
With a net weight of 1.26 kg, it balances strength and ease of installation.

Application

Industrial Uses of 6226-M-C4-SQ77 Bearing
This bearing is commonly used in electric motors and generators, where its insulating coating prevents electrical currents from causing damage. The brass cage ensures smooth operation even under high-speed conditions.

Where Is 6226-M-C4-SQ77 Bearing Used?
You’ll often find this bearing in wind turbines, where it handles both radial and axial loads while resisting electrical arcing. Its C4 clearance makes it suitable for applications with thermal expansion.

Built for Heavy-Duty Use: 6226-M-C4-SQ77 Bearing
In industrial pumps, this bearing’s high dynamic load rating ensures long-lasting performance. The SQ77 coating provides reliable insulation, even in harsh environments.

Automotive vs Aerospace: Applications of 6226-M-C4-SQ77 Bearing
In automotive alternators, this bearing reduces electrical wear, while in aerospace, its lightweight design and insulation are key. The 230 mm outer diameter fits various compact spaces.

Perfect Fit for Automation: 6226-M-C4-SQ77 Bearing
This bearing works well in robotic arms, where electrical insulation and precision are crucial. The 40 mm width balances strength and space efficiency.

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