SKF NJ 324 ECJ 120x260x55 Cylindrical Roller Bearing

Main Description:

The SKF NJ 324 ECJ cylindrical roller bearing (120x260x55 mm) is a premium single-row bearing engineered for high radial loads, precision, and long-term industrial reliability. This bearing design belongs to the NJ series, known for its ability to support axial displacement in one direction, making it ideal for applications involving thermal expansion or shaft misalignment.

Manufactured by SKF®, a global leader in bearing technology, the NJ 324 ECJ model features hardened bearing steel and a stamped steel cage (ECJ) for enhanced rigidity and uniform load distribution. The optimized internal geometry ensures low friction, reduced vibration, and consistent performance at high speeds.

With its separable outer ring and integral flanges on the inner ring, this bearing offers ease of assembly and maintenance, making it particularly suitable for gearboxes, electric motors, compressors, and heavy industrial drives. Its advanced surface finish minimizes wear, while precision tolerances guarantee stable operation even under continuous load conditions.

Designed for demanding environments, the SKF NJ 324 ECJ cylindrical roller bearing delivers superior fatigue resistance, dimensional stability, and extended service life, ensuring dependable operation in industrial and automotive machinery worldwide.

Applications

The NJ 324 ECJ bearing is widely used in:

• Electric motors and high-performance gearboxes

• Industrial pumps and compressors

• Conveyor and power transmission systems

• Machine tools and precision manufacturing lines

• Heavy-duty agricultural and mining equipment

Its design enables high radial load capacity with excellent alignment performance, making it an ideal choice for industrial rotating systems and mechanical units.

 Technical Specifications

Product Advantages

• ⚙️ High radial load capacity - designed for heavy-duty mechanical applications

• 🧰 Separable design - simplifies installation and maintenance in industrial systems

• 🛡️ Long service life - precision-machined raceways ensure even load distribution

• 🔧 Low friction and noise - optimized roller geometry reduces vibration

• 🌍 SKF reliability - global standard for precision and durability

• 🕹️ Ideal for thermal expansion - accommodates axial movement in one direction

FAQ

1. What does “NJ” mean in SKF bearings?
The “NJ” design indicates a cylindrical roller bearing with flanges on the inner ring, allowing axial movement of the shaft in one direction.

2. What applications is NJ 324 ECJ suitable for?
It is used in gearboxes, pumps, electric motors, and other heavy industrial equipment requiring high radial load capacity.

3. What does ECJ stand for?
ECJ refers to a reinforced pressed steel cage, designed to improve load distribution and reduce friction during operation.

4. Can this bearing operate at high speeds?
Yes. With optimized geometry and SKF’s precision tolerances, it can reach speeds up to 4300 rpm under proper lubrication.

5. Are equivalent models available from other brands?
Yes, equivalent models with the same dimensions (120x260x55 mm) are available from FAG, NSK, NTN, TIMKEN, and KOYO.