NKE Electrically Insulated Ball Bearings 6326-M-C4-SQ77

The NKE 6326-M-C4-SQ77 is an electrically insulated ball bearing with a 130mm bore and 280mm outer diameter, designed to handle high loads and speeds. Its outer ring features a special coating to prevent electrical currents from damaging the bearing.

With a dynamic load rating of 229kN and a static load rating of 216kN, it’s built for demanding applications. The brass cage ensures smooth operation at speeds up to 5000 RPM.

The insulating coating (SQ77) provides a breakdown voltage of 1000-3000V, making it ideal for electric motors or generators. The C4 radial clearance offers flexibility in high-temperature environments.

Weighing 15.15kg, this bearing is robust yet manageable for industrial use. It complies with ROHS standards, ensuring safety and environmental friendliness. Perfect for applications where electrical insulation is critical.

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Description

Features

Application

Q&A

Product Parameters

Model 6326-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 280.0 mm
Width 58.0 mm
Net Weight 15.15 kg
Basic Dynamic Load Rating 229.0 kN
Basic Static Load Rating 216.0 kN
Reference Speed 5000.0 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 6326-M-C4-SQ77 dimension drawing

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Features

How Is 6326-M-C4-SQ77 Bearing Engineered for Reliability?

6326-M-C4-SQ77 Bearing features an insulating coating on the outer ring, preventing electrical damage and ensuring reliable operation.
The brass cage enhances durability and maintains precise ball alignment under high-speed conditions.

With a breakdown voltage of 1000-3000 V, 6326-M-C4-SQ77 Bearing is ideal for applications with electrical currents.
Its C4 radial internal clearance allows for thermal expansion, ensuring consistent performance.

6326-M-C4-SQ77 Bearing’s dynamic load rating of 229 kN makes it suitable for heavy-duty industrial use.
The coating thickness of 100-500 µm provides robust protection against electrical arcing.

Application

Industrial Uses of 6326-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 6326-M-C4-SQ77 Bearing Used?
You’ll often find it in wind turbines and industrial fans, where its high dynamic load rating handles heavy radial loads. The C4 clearance makes it suitable for applications with thermal expansion.

Built for Heavy-Duty Use: 6326-M-C4-SQ77 Bearing
It’s a reliable choice for conveyor systems in mining and material handling, thanks to its robust construction. The SQ77 coating provides excellent resistance to electrical arcing.

Automotive vs Aerospace: Applications of 6326-M-C4-SQ77 Bearing
In automotive alternators, this bearing ensures long-lasting performance, while in aerospace, its insulation properties protect sensitive equipment. The 280 mm outer diameter offers stability in both fields.

Perfect Fit for Automation: 6326-M-C4-SQ77 Bearing
It works well in robotic arms and CNC machines, where precision and electrical insulation are key. The 229 kN dynamic load rating means it can handle continuous operation without issues.