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FAG Current-Insulated Single Row Cylindrical Roller Bearing NU228-E-XL-M1-J20AA

FAG Current-Insulated Single Row Cylindrical Roller Bearing NU228-E-XL-M1-J20AA

The FAG NU228-E-XL-M1-J20AA is a current-insulated cylindrical roller bearing with a 140mm bore and 250mm outer diameter, designed for heavy-duty applications. Its ceramic-coated outer ring provides reliable insulation, with a breakdown voltage of up to 1000V.

With a dynamic load rating of 460 kN and a static load rating of 510 kN, it handles high loads efficiently. The brass cage ensures smooth operation at speeds up to 2600 rpm.

The bearing features a normal radial internal clearance (Cn) and weighs 8.6 kg, making it sturdy yet manageable. It complies with RoHS and REACH standards for environmental safety.

Ideal for electric motors or generators, this bearing prevents electrical current damage while maintaining strong performance in damp or dry conditions.

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Product Parameters

  • Model NU228-E-XL-M1-J20AA
  • Product Category Current-Insulated Cylindrical Roller Bearing Single Row
  • Insulating Coating Types Outer ring ceramic coated
  • Coating Suffix J20AA
  • Manufacturers FAG
  • Bore Diameter 140.0 mm
  • Outside Diameter 250.0 mm
  • Width 42.0 mm
  • Net Weight 8.6 kg
  • Basic Dynamic Load Rating 460 kN
  • Basic Static Load Rating 510 kN
  • Reference Speed 2600r/min
  • Breakdown Voltage (DC) ≤1000v
  • Layer Thic kNess 200 um
  • Electrical Resistance 50MΩ (Dry); 10MΩ (Damp)
  • Cage Material M - Brass Cage
  • Radial Internal Clearance Cn Normal Internal Play
  • ROHS Compliant
  • REACH Compliant
FAG Current-Insulated Single Row Cylindrical Roller Bearing NU228-E-XL-M1-J20AA dimension drawing
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Features

How Does NU228-E-XL-M1-J20AA Bearing Resist Electrical Currents?

NU228-E-XL-M1-J20AA Bearing features an outer ring ceramic coating, providing excellent insulation against electrical currents.
The coating offers a breakdown voltage of up to 1000V, making it suitable for applications with electrical interference.

Its brass cage ensures smooth operation and reduces friction, even under high loads.
With a basic dynamic load rating of 460 kN, NU228-E-XL-M1-J20AA Bearing delivers reliable performance in demanding conditions.

The bearing maintains electrical resistance of 50MΩ when dry, ensuring consistent insulation properties.
Its design also accommodates damp environments, with resistance levels of 10MΩ for versatile use.

Application

Industrial Uses of NU228-E-XL-M1-J20AA Bearing
NU228-E-XL-M1-J20AA Bearing is commonly used in electric motors and generators, where its current-insulating coating prevents electrical arcing. The brass cage ensures smooth operation even under high rotational speeds.

What Makes NU228-E-XL-M1-J20AA Bearing a Preferred Choice?
In wind turbines, NU228-E-XL-M1-J20AA Bearing handles heavy radial loads while its ceramic coating protects against stray currents. Its robust design makes it suitable for harsh outdoor conditions.

Built for Heavy-Duty Use: NU228-E-XL-M1-J20AA Bearing
NU228-E-XL-M1-J20AA Bearing excels in industrial gearboxes, where its high dynamic load rating ensures long service life. The normal internal play allows for thermal expansion during continuous operation.

Automotive vs Aerospace: Applications of NU228-E-XL-M1-J20AA Bearing
In automotive applications, NU228-E-XL-M1-J20AA Bearing supports drivetrain components, while in aerospace, it’s used in auxiliary power units. Its breakdown voltage rating makes it versatile for different electrical environments.

Perfect Fit for Automation: NU228-E-XL-M1-J20AA Bearing
NU228-E-XL-M1-J20AA Bearing is ideal for robotic arms in automated production lines. The ceramic-coated outer ring reduces downtime caused by electrical damage.

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