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FAG Current-Insulated Single Row Cylindrical Roller Bearing NU311-E-XL-M1-J20AA-C3
FAG Current-Insulated Single Row Cylindrical Roller Bearing NU311-E-XL-M1-J20AA-C3

FAG Current-Insulated Single Row Cylindrical Roller Bearing NU311-E-XL-M1-J20AA-C3

The NU311-E-XL-M1-J20AA-C3 is a current-insulated cylindrical roller bearing with a 55mm bore and 120mm outer diameter, designed to block electrical currents. Its outer ring features a ceramic coating, providing insulation up to 1000V.

With a dynamic load rating of 159 kN, it handles heavy radial loads smoothly, even at speeds up to 5500 rpm. The brass cage ensures durability and stable performance under stress.

The C3 radial clearance allows for thermal expansion, making it suitable for high-temperature environments. Its insulation resistance stays reliable even in damp conditions (10MΩ).

Ideal for electric motors or generators where current leakage is a concern. Compliant with ROHS and REACH standards, it’s a safe choice for industrial applications. Weighing 1.75kg, it balances strength and practicality.

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Product Parameters

  • Model NU311-E-XL-M1-J20AA-C3
  • Product Category Current-Insulated Cylindrical Roller Bearing Single Row
  • Insulating Coating Types Outer ring ceramic coated
  • Coating Suffix J20AA
  • Manufacturers FAG
  • Bore Diameter 55.0 mm
  • Outside Diameter 120.0 mm
  • Width 29.0 mm
  • Net Weight 1.75 kg
  • Basic Dynamic Load Rating 159 kN
  • Basic Static Load Rating 139 kN
  • Reference Speed 5500r/min
  • Breakdown Voltage (DC) ≤1000v
  • Layer Thic kNess 200 um
  • Electrical Resistance 50MΩ (Dry); 10MΩ (Damp)
  • Cage Material M - Brass Cage
  • Radial Internal Clearance C3
  • ROHS Compliant
  • REACH Compliant

Features

How Does NU311-E-XL-M1-J20AA-C3 Bearing Resist Electrical Current?

NU311-E-XL-M1-J20AA-C3 Bearing features an outer ring ceramic coating, providing excellent insulation against electrical currents.
The coating ensures a breakdown voltage of up to 1000V, making it suitable for applications with electrical interference.

Its brass cage enhances durability and maintains smooth operation under high loads.
With a dynamic load rating of 159 kN, it handles demanding conditions reliably.

The bearing’s design includes C3 radial clearance, accommodating thermal expansion in varied environments.
This ensures consistent performance even in applications with temperature fluctuations.

NU311-E-XL-M1-J20AA-C3 Bearing’s electrical resistance remains stable, with 50MΩ dry and 10MΩ damp resistance.
This makes it a dependable choice for machinery exposed to moisture or electrical currents.

Application

Industrial Uses of NU311-E-XL-M1-J20AA-C3 Bearing
NU311-E-XL-M1-J20AA-C3 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 NU311-E-XL-M1-J20AA-C3 Bearing a Preferred Choice?
In wind turbines, NU311-E-XL-M1-J20AA-C3 Bearing handles heavy radial loads while its ceramic coating protects against stray currents. Its C3 clearance allows for thermal expansion in demanding environments.

Perfect Fit for Automation: NU311-E-XL-M1-J20AA-C3 Bearing
NU311-E-XL-M1-J20AA-C3 Bearing works well in robotic arms, offering reliable performance with minimal maintenance. The ceramic outer ring coating adds durability in humid or corrosive conditions.

Medical vs Industrial: Where NU311-E-XL-M1-J20AA-C3 Bearing Excels
NU311-E-XL-M1-J20AA-C3 Bearing suits industrial gearboxes due to its high dynamic load rating. In medical imaging devices, its electrical insulation ensures interference-free operation.

Where Is NU311-E-XL-M1-J20AA-C3 Bearing Used?
NU311-E-XL-M1-J20AA-C3 Bearing is ideal for conveyor systems in mining, where dust and moisture resistance are key. The brass cage reduces friction, extending service life in harsh conditions.

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