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Single Row Cylindrical Roller Bearings With Inner Ring NJ 308 ECJ
Single Row Cylindrical Roller Bearings With Inner Ring NJ 308 ECJ

Single Row Cylindrical Roller Bearings With Inner Ring NJ 308 ECJ

The NJ 308 ECJ is a single row cylindrical roller bearing with a 40mm bore and 90mm outer diameter, crafted from durable chrome steel. It handles combined loads up to 20925 lbf and spins smoothly at speeds up to 10000 RPM.

Its open design allows easy lubrication with grease or oil, while the steel cage ensures stable performance. The bearing operates well in temperatures from -30°C to 110°C.

This model is interchangeable with SKF bearings, making it a practical choice for replacements. Ideal for applications like gearboxes or industrial machinery where radial and axial loads are present.

Weighing 0.68kg, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe use.

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Product Parameters

  • Part Number NJ 308 ECJ
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 40 mm
  • Bore Dia Tolerance -0.012mm to 0
  • Outer Dia 90 mm
  • Outer Dia Tolerance -0.015mm to 0
  • Width 23 mm
  • Width Tolerance -0.12mm to 0
  • Shoulder Dia Of Inner Ring 57.5 mm
  • Chamfer Dimension r1,2(min.) 1.5 mm
  • Chamfer Dimension r3,4(min.) 1.5 mm
  • Permissible Axial Displacement(max.) 1.4 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 Steel cage, roller centred
  • Dynamic Radial Load 20925 lbf
  • Static Radial Load 17550 lbf
  • Lubrication Grease, Oil
  • Temperature Range -30° to 110 °C
  • RoHS Compliant
  • REACH Compliant
  • Max Speed 10000 rpm
  • Weight 0.68 kg
  • Shoulder Dia Of Outer Ring 75.18 mm
  • Raceway Diameter Of Inner Ring 52 mm

Features

Performance Features of NJ 308 ECJ Bearing

NJ 308 ECJ Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 20925 lbf, ensuring reliable performance in demanding conditions.
The steel cage keeps the rollers centred, reducing friction and extending service life.
With a maximum speed of 10,000 rpm, it balances durability and efficiency.

How Does NJ 308 ECJ Bearing Reduce Friction?

NJ 308 ECJ Bearing features a roller-centred steel cage that minimises friction during operation.
The chrome steel construction ensures smooth movement even under heavy radial loads.
Its design allows for permissible axial displacement up to 1.4 mm, accommodating slight misalignments.
This makes it suitable for applications requiring both radial and axial load support.

Engineered for Precision: NJ 308 ECJ Bearing

NJ 308 ECJ Bearing’s precise dimensions and tight tolerances ensure accurate performance.
The chamfer dimensions of 1.5 mm facilitate easier installation and alignment.
Its temperature range from -30° to 110°C allows operation in various environments.
The open seal design permits easy lubrication with grease or oil.

Steel vs Ceramic Bearings: Strengths of NJ 308 ECJ Bearing

NJ 308 ECJ Bearing uses chrome steel for both rings and rollers, providing excellent durability.
This material choice ensures high resistance to wear and tear in industrial applications.
The steel cage design enhances stability and reduces maintenance requirements.
With a static radial load of 17550 lbf, it handles heavy loads efficiently.

Why Choose NJ 308 ECJ Bearing for Precision Tasks?

NJ 308 ECJ Bearing’s single-row cylindrical design ensures precise load distribution.
The inner ring construction enhances stability and alignment in machinery.
Its raceway diameter of 52 mm on the inner ring optimises roller movement.
This makes it ideal for applications requiring high precision and reliability.

Application

Industrial Uses of NJ 308 ECJ Bearing
NJ 308 ECJ Bearing is commonly used in heavy machinery like conveyor belts and gearboxes, where its cylindrical roller design handles both radial and axial loads efficiently. The open seal type allows for easy lubrication, extending its service life in demanding conditions.

What Makes NJ 308 ECJ Bearing a Preferred Choice?
In automotive applications, NJ 308 ECJ Bearing supports components such as transmissions and differentials, thanks to its high dynamic radial load capacity. The chrome steel construction ensures durability even under continuous high-speed operation.

Perfect Fit for Automation: NJ 308 ECJ Bearing
For robotic arms and automated production lines, NJ 308 ECJ Bearing offers precise movement with minimal friction. Its steel cage design maintains roller alignment, ensuring consistent performance in repetitive tasks.

Medical vs Industrial: Where NJ 308 ECJ Bearing Excels
While NJ 308 ECJ Bearing is robust enough for industrial presses, its precision also suits medical imaging devices requiring smooth rotation. The grease or oil lubrication options provide flexibility for different operational environments.

Essential Roles of NJ 308 ECJ Bearing
In household appliances like washing machines, NJ 308 ECJ Bearing reduces vibration and noise during spin cycles. The metric dimensions make it easy to integrate into various European and Asian appliance designs.

Q&A

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