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Single Row Cylindrical Roller Bearings With Inner Ring NU 421 M
Single Row Cylindrical Roller Bearings With Inner Ring NU 421 M

Single Row Cylindrical Roller Bearings With Inner Ring NU 421 M

The NU 421 M is a single-row cylindrical roller bearing with a 105mm bore and 260mm outer diameter, crafted from durable chrome steel. It handles combined loads up to 112725 lbf and operates smoothly at speeds up to 3000 RPM.

Its brass cage ensures stable roller alignment, while the open design allows easy lubrication with grease or oil. The bearing performs reliably in temperatures from -30°C to 110°C.

With a width of 60mm and chamfered edges, it fits well in tight spaces. This model is interchangeable with SKF bearings, making it a practical choice for replacements.

Ideal for heavy-duty applications like industrial gearboxes or machinery where radial and axial loads are present. Compliant with RoHS and REACH standards, it’s a safe and robust option. Weighing 17.3kg, it’s built for durability.

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Product Parameters

  • Part Number NU 421 M
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 105 mm
  • Bore Dia Tolerance -0.02mm to 0
  • Outer Dia 260 mm
  • Outer Dia Tolerance -0.035mm to 0
  • Width 60 mm
  • Width Tolerance -0.20mm to 0
  • Chamfer Dimension r1,2(min.) 4 mm
  • Chamfer Dimension r3,4(min.) 4 mm
  • Permissible Axial Displacement(max.) 4.9 mm
  • System of Measurement Metric
  • Roller Bearing Type Cylindrical
  • For Load Direction Combined
  • Construction Single Row
  • Inner Ring Type With Inner Ring
  • Seal Type Open
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Brass cage, roller centred
  • Dynamic Radial Load 112725 lbf
  • Static Radial Load 128250 lbf
  • Lubrication Grease, Oil
  • Temperature Range -30° to 110 °C
  • RoHS Compliant
  • REACH Compliant
  • Max Speed 3000 rpm
  • Weight 17.3 kg
  • Shoulder Dia Of Outer Ring 206.3 mm
  • Raceway Diameter Of Inner Ring 144.5 mm

Features

Performance Features of NU 421 M Bearing

NU 421 M Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 112725 lbf, ensuring reliable performance in heavy-duty applications.
The brass cage keeps the rollers centred, reducing friction and extending service life.
With a maximum speed of 3000 rpm, it balances durability and efficiency in demanding conditions.

Application

Industrial Uses of NU 421 M Bearing
NU 421 M Bearing is commonly used in heavy machinery like industrial gearboxes and large electric motors, where its cylindrical roller design handles high radial loads efficiently. The brass cage ensures smooth rotation even at speeds up to 3000 rpm.

Where Is NU 421 M Bearing Used?
You’ll often find NU 421 M Bearing in conveyor systems and mining equipment, thanks to its robust chrome steel construction. Its open design allows for easy lubrication, making it ideal for harsh environments.

Built for Heavy-Duty Use: NU 421 M Bearing
NU 421 M Bearing excels in applications like steel mills and paper processing machines, where combined loads are common. The metric dimensions ensure compatibility with a wide range of industrial equipment.

Automotive vs Aerospace: Applications of NU 421 M Bearing
In automotive settings, NU 421 M Bearing supports drivetrain components, while in aerospace, it’s used in auxiliary systems due to its reliability. The temperature range of -30° to 110°C makes it versatile for various climates.

Perfect Fit for Automation: NU 421 M Bearing
NU 421 M Bearing is a go-to choice for robotic arms and automated assembly lines, where precision and durability are key. Its single-row design simplifies installation and maintenance in tight spaces.

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