Product Overview: The NJ 238 Cylindrical Roller Bearing
The NJ 238 is a high-capacity, single-row cylindrical roller bearing designed for heavy-duty industrial applications. With precise dimensions of 190x340x55mm (Bore x Outer Diameter x Thickness), this bearing is a key component in our NJ Series of Cylindrical Roller Bearings. The NJ design features two integral flanges on the inner ring and one on the outer ring, allowing it to accommodate axial displacement of the shaft relative to the housing in one direction, while also providing axial location. Its separable design simplifies both mounting and dismounting procedures, making it a practical choice for demanding machinery.
Engineered for reliability, the NJ 238 bearing utilizes a line contact between the rollers and raceways, enabling it to support very high radial loads and operate at high speeds. This robust construction ensures a long service life and consistent performance, even under the most challenging operating conditions. It is an essential component for machinery requiring high radial stiffness and single-direction axial support.
Key Features of the NJ 238 Bearing
- High Radial Load Capacity: The line contact between rollers and raceways provides excellent capacity for heavy radial forces.
- Single-Direction Axial Location: The flange configuration allows the bearing to locate the shaft axially in one direction, preventing unwanted movement.
- Separable Design: The inner ring can be mounted independently of the outer ring and roller assembly, facilitating easier installation, inspection, and maintenance.
- Low Friction Operation: Optimized internal geometry minimizes friction and heat buildup, contributing to higher operational efficiency and longer service life.
- High Stiffness: Provides substantial radial rigidity, which is critical for applications requiring precise shaft guidance.
- Durable Construction: Manufactured from high-quality, clean bearing steel for enhanced strength, durability, and resistance to wear.
Common Applications
- Industrial Gearboxes: Provides robust support for gears and shafts, handling the high loads and speeds common in gear systems.
- Pumps and Compressors: Ensures reliable rotation and shaft support in various industrial pump and compressor designs.
- Large Electric Motors: Used as a locating bearing in large motors to manage heavy radial loads and control axial shaft position.
- Rolling Mills: Capable of withstanding the extreme loads and harsh conditions found in steel and metal rolling equipment.
- Vibrating Screens and Crushers: Ideal for mining and construction equipment that experiences heavy loads and significant vibration.
- Wind Turbines: Used in gearbox and main shaft applications to support immense rotational forces.
- Paper Manufacturing Machinery: Provides reliable performance for rollers and shafts in paper processing equipment.
Benefits of Using the NJ 238 Bearing
- Enhanced Machine Reliability: Its ability to handle substantial loads and provide axial location reduces stress on other components, leading to fewer breakdowns.
- Simplified Maintenance: The separable nature of the bearing allows for easier inspection and replacement of individual parts, reducing downtime.
- Extended Service Life: The robust design and high-quality materials ensure long-term performance, minimizing the need for frequent replacements.
- Improved Operational Efficiency: Low-friction characteristics contribute to reduced energy consumption and smoother machine operation.
- Versatile Performance: Suitable for a wide array of heavy industrial machinery where both radial load capacity and axial guidance are required.
- Cost-Effective Solution: Offers a durable and reliable performance that translates to lower overall maintenance and replacement costs over the machine's lifecycle.
