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Single Row Cylindrical Roller Bearings With Inner Ring NJ 311 ECM
Single Row Cylindrical Roller Bearings With Inner Ring NJ 311 ECM

Single Row Cylindrical Roller Bearings With Inner Ring NJ 311 ECM

The NJ 311 ECM is a single-row cylindrical roller bearing with a 55mm bore and 120mm outer diameter, crafted from durable chrome steel. It handles combined loads up to 35100 lbf and reaches speeds of 7000 RPM.

Its brass cage keeps rollers centred for smooth operation, while the open design allows easy lubrication with grease or oil. The bearing performs 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 machinery like pumps or gearboxes where radial and axial loads are present.

Weighing 1.76kg, it’s sturdy yet manageable for its size. Compliant with RoHS and REACH standards for safe use.

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Product Parameters

  • Part Number NJ 311 ECM
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 55 mm
  • Bore Dia Tolerance -0.15mm to 0
  • Outer Dia 120 mm
  • Outer Dia Tolerance -0.015mm to 0
  • Width 29 mm
  • Width Tolerance -0.15mm to 0
  • Shoulder Dia Of Inner Ring 77.5 mm
  • Chamfer Dimension r1,2(min.) 2 mm
  • Chamfer Dimension r3,4(min.) 2 mm
  • Permissible Axial Displacement(max.) 2 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 35100 lbf
  • Static Radial Load 32175 lbf
  • Lubrication Grease, Oil
  • Temperature Range -30° to 110 °C
  • RoHS Compliant
  • REACH Compliant
  • Max Speed 7000 rpm
  • Weight 1.76 kg
  • Shoulder Dia Of Outer Ring 100.3 mm
  • Raceway Diameter Of Inner Ring 70.5 mm

Features

Performance Features of NJ 311 ECM Bearing

NJ 311 ECM Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 35,100 lbf, ensuring reliable performance in demanding applications.

The brass cage keeps the rollers centred, reducing wear and extending service life.
With a maximum speed of 7,000 rpm, it balances durability and efficiency.

NJ 311 ECM Bearing operates smoothly in temperatures ranging from -30° to 110°C.
Its open design allows for easy lubrication with grease or oil, reducing maintenance needs.

The precise chamfer dimensions of 2 mm ensure easy installation and alignment.
This makes NJ 311 ECM Bearing a practical choice for various industrial applications.

Application

Industrial Uses of NJ 311 ECM Bearing
NJ 311 ECM Bearing is commonly used in heavy machinery like conveyor systems and industrial gearboxes, where its cylindrical roller design handles high radial loads efficiently. The brass cage ensures smooth operation even at high speeds, making it a reliable choice for continuous use.

In automotive applications, NJ 311 ECM Bearing supports components such as transmissions and differentials, where its combined load capacity is essential. The chrome steel construction provides durability, ensuring long service life under demanding conditions.

For automation equipment, NJ 311 ECM Bearing’s precise dimensions and open design make it ideal for robotic arms and CNC machines. Its ability to handle axial displacement adds versatility in dynamic setups.

Medical imaging devices benefit from NJ 311 ECM Bearing’s consistent performance and low maintenance requirements. The grease or oil lubrication options allow for quiet operation in sensitive environments.

In household appliances like washing machines, NJ 311 ECM Bearing’s robust design ensures reliability during high-speed spin cycles. The metric sizing makes it easy to integrate into various European and Asian models.

Q&A

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