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Single Row Cylindrical Roller Bearings With Inner Ring NJ 321 ECML

Single Row Cylindrical Roller Bearings With Inner Ring NJ 321 ECML

The NJ 321 ECML is a single row cylindrical roller bearing with a 105mm bore and 225mm outer diameter, crafted from durable chrome steel. It handles combined loads up to 112500 lbf and operates smoothly at speeds up to 6000 RPM.

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

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.

Weighing 10.3kg, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe and eco-friendly use.

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Product Parameters

  • Part Number NJ 321 ECML
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 105 mm
  • Bore Dia Tolerance -0.02mm to 0
  • Outer Dia 225 mm
  • Outer Dia Tolerance -0.03mm to 0
  • Width 49 mm
  • Width Tolerance -0.20mm to 0
  • Shoulder Dia Of Inner Ring 145 mm
  • Chamfer Dimension r1,2(min.) 3 mm
  • Chamfer Dimension r3,4(min.) 3 mm
  • Permissible Axial Displacement(max.) 3.4 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, inner or outer ring centred
  • Dynamic Radial Load 112500 lbf
  • Static Radial Load 112500 lbf
  • Lubrication Grease, Oil
  • Temperature Range -30° to 110 °C
  • RoHS Compliant
  • REACH Compliant
  • Max Speed 6000 rpm
  • Weight 10.3 kg
  • Shoulder Dia Of Outer Ring 190 mm
  • Raceway Diameter Of Inner Ring 133 mm
Single Row Cylindrical Roller Bearings With Inner Ring NJ 321 ECML dimension drawing
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Features

Performance Features of NJ 321 ECML Bearing

NJ 321 ECML Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 112,500 lbf, ensuring reliable performance in heavy-duty applications.
The brass cage keeps the rollers aligned, reducing friction and extending operational life.
With a maximum speed of 6,000 rpm, it delivers both durability and efficiency.

How Is NJ 321 ECML Bearing Engineered for Reliability?

NJ 321 ECML Bearing features a single-row cylindrical design, optimised for combined load handling.
The chrome steel construction ensures resistance to wear, even in demanding conditions.
Its permissible axial displacement of 3.4 mm allows for flexibility in various applications.
Grease or oil lubrication options make it adaptable to different operational needs.

Designed for Durability: NJ 321 ECML Bearing

NJ 321 ECML Bearing’s robust construction includes a brass cage for enhanced roller alignment.
The inner ring design ensures stability, even under high radial and axial loads.
With a temperature range of -30° to 110°C, it performs reliably in varying environments.
Its open seal type simplifies maintenance, reducing downtime and operational costs.

Steel vs Ceramic Bearings: Strengths of NJ 321 ECML Bearing

NJ 321 ECML Bearing uses chrome steel for both rings and rollers, ensuring high load capacity.
This material choice provides excellent wear resistance, making it suitable for heavy industrial use.
The brass cage further enhances durability by maintaining proper roller alignment.
Its compatibility with both grease and oil lubrication adds to its versatility.

Application

Industrial Uses of NJ 321 ECML Bearing
NJ 321 ECML Bearing is commonly used in heavy machinery like industrial gearboxes and large pumps, where its cylindrical roller design handles both radial and axial loads efficiently. The brass cage ensures smooth operation even at high speeds.

In automotive applications, NJ 321 ECML Bearing fits well in truck transmissions and drivetrains, thanks to its robust chrome steel construction. Its metric sizing makes it a reliable choice for European and Asian vehicle manufacturers.

For automation systems, NJ 321 ECML Bearing provides stability in robotic arms and conveyor belts, where precision and durability are key. The open design allows for easy lubrication, extending its service life in continuous operations.

Medical equipment benefits from NJ 321 ECML Bearing’s consistent performance in devices like MRI scanners. The temperature range of -30° to 110°C ensures reliability in various clinical environments.

In consumer electronics, NJ 321 ECML Bearing can be found in large industrial printers, where its high load capacity supports heavy paper rolls. The grease lubrication option reduces maintenance needs for long-term use.

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