NJ 311 ECP SKF Cylindrical Roller Bearing 55x120x29

NJ design and operating characteristics

The NJ 311 ECP cylindrical roller bearing from SKF is a single row bearing designed to handle high radial loads while operating at elevated speeds. With dimensions 55x120x29, this bearing is widely used in industrial drive systems where rigidity and precise shaft guidance are required.

The NJ design features two integral flanges on the outer ring and one flange on the inner ring, allowing the bearing to locate the shaft axially in one direction. This design improves system stability and prevents unwanted axial movement. Compared to a standard ball bearing, the cylindrical roller design offers significantly higher radial load capacity and increased stiffness.

Industrial applications

The NJ 311 ECP SKF bearing is commonly applied in industrial applications such as electric motors, gearboxes, production machinery, industrial fans and drive units. Its separable construction simplifies installation and maintenance, reducing downtime during service operations.

The bearing can operate as part of a complete bearing unit, working together with a suitable bearing housing to ensure reliable and long-term performance in demanding environments.

Key benefits for B2B customers

For B2B customers, the NJ 311 ECP offers predictable performance, high durability and low operating friction. Precision manufacturing ensures stable operation under continuous loads, making it a trusted solution for machine builders, system integrators and maintenance departments focused on reliability and cost efficiency.

Main product description

The NJ 311 ECP SKF cylindrical roller bearing 55x120x29 is engineered for demanding industrial environments requiring high radial load capacity and controlled axial shaft positioning. The NJ construction ensures axial location in one direction, while the ECP cage provides stable roller guidance and even load distribution.

This bearing is suitable for new machine designs as well as replacement and modernization projects. Its robust design supports long service life and consistent performance, even under heavy loads and continuous operation.

FAQ - frequently asked questions

What loads can the NJ 311 ECP handle?
It supports high radial loads and locates the shaft axially in one direction.

How does NJ design differ from NU design?
NJ bearings locate the shaft axially in one direction, while NU bearings allow axial displacement in both directions.

Can this bearing replace a ball bearing?
Yes, especially in applications requiring higher radial load capacity.

Where is this bearing most commonly used?
In electric motors, gearboxes and industrial machinery.

Is it suitable for continuous operation?
Yes, it is designed for long-term industrial use.