Product Overview: The NJ 318 Cylindrical Roller Bearing
The NJ 318 is a high-capacity, single-row cylindrical roller bearing designed for demanding industrial applications. With a 90mm bore diameter, 190mm outer diameter, and 43mm width, this bearing is engineered to handle substantial radial loads and locate the shaft axially in one direction. As a key component in our NJ 300 Series, it belongs to a versatile family of Cylindrical Roller Bearings known for their high-speed capability and operational rigidity.
The NJ design features two integral flanges on the inner ring and a single flange on the outer ring. This configuration allows the bearing to accommodate some axial displacement of the shaft relative to the housing, making it ideal for applications with thermal expansion. The separable design, where the outer ring can be mounted independently of the inner ring and roller assembly, simplifies both installation and maintenance procedures.
Key Features of the NJ 318 Bearing
- Single-Direction Axial Location: Designed to locate a shaft axially in one direction, providing precise positioning.
- High Radial Load Capacity: The line contact between rollers and raceways allows for the support of heavy radial forces.
- Separable Design: Components can be mounted separately, which simplifies installation, inspection, and maintenance routines.
- High-Speed Performance: Engineered with low-friction characteristics, making it suitable for high-rotational speed applications.
- Durable Construction: Manufactured from high-purity, hardened bearing steel for long service life and exceptional reliability under load.
- Accommodates Thermal Expansion: Allows for axial displacement caused by temperature changes, preventing stress on the bearing and shaft.
Common Applications of NJ 318 Bearings
- Industrial Gearboxes: Provides robust support for gears and shafts, ensuring reliable power transmission.
- Electric Motors and Generators: Used to support motor shafts, handling high speeds and significant radial loads.
- Pumps and Compressors: Ensures the stability and smooth rotation of critical components in fluid machinery.
- Construction Equipment: Ideal for heavy-duty machinery like excavators, cranes, and loaders where reliability is paramount.
- Rolling Mills: Withstands the extreme loads and high temperatures found in metal forming and processing applications.
- Vibrating Machinery: Suitable for vibratory screens and compactors due to its high load-carrying capacity.
- Wind Turbines: Used in gearbox and main shaft applications to manage the complex load conditions.
Benefits of Using the NJ 318 Bearing
- Enhanced Machine Reliability: The robust design reduces the risk of premature failure, leading to less downtime.
- Simplified Assembly: The separable nature of the bearing makes mounting and dismounting straightforward, saving time and labor.
- Extended Service Life: High-quality materials and optimized internal geometry minimize wear and extend operational life.
- Improved Operational Efficiency: Low-friction design reduces energy consumption and heat generation.
- Versatile Load Management: Effectively handles a combination of heavy radial loads and single-direction axial loads.
- Cost-Effective Maintenance: The ease of inspection and replacement for individual components helps lower long-term maintenance costs.
