Product Overview: The NN 3076 High-Precision Cylindrical Roller Bearing
The NN 3076 is a high-performance, double-row cylindrical roller bearing, engineered for applications demanding exceptional rigidity and high radial load capacity. With principal dimensions of 380mm bore diameter, 560mm outer diameter, and 135mm width, this bearing is a key component in heavy-duty industrial machinery. As part of our NN 3000 Series, it features a design with a flangeless inner ring and two rows of rollers, making it ideal for high-speed operations where precision is paramount, such as in machine tool spindles. This configuration allows the bearing to accommodate high radial forces while permitting axial displacement of the shaft relative to the housing. Our extensive range of Cylindrical Roller Bearings ensures you find the perfect solution for your specific requirements.
Key Features of the NN 3076 Bearing
- Double-Row Design: Two rows of cylindrical rollers provide a very high radial load-carrying capacity and exceptional stiffness.
- High-Speed Capability: Optimized internal geometry reduces friction and heat generation, making it suitable for high rotational speeds.
- Separable Inner Ring: The inner ring is designed without flanges, allowing for easy and efficient mounting and dismounting procedures.
- Exceptional Rigidity: The robust construction offers high radial stiffness, which is critical for applications requiring precise shaft guidance, like machine tools.
- Axial Displacement: Accommodates thermal expansion or contraction of the shaft by allowing axial movement within the bearing itself.
- Premium Construction: Manufactured from high-quality, clean bearing steel for extended service life and reliability under harsh operating conditions.
Common Applications
- Machine Tool Spindles: Widely used in the main spindles of lathes, milling machines, and grinding machines where high precision is essential.
- Rolling Mills: Provides robust support for rollers in steel and metal processing plants, withstanding heavy loads and high temperatures.
- Industrial Gearboxes: Ensures reliable operation in large-scale gear systems by supporting shafts under significant radial stress.
- Printing Machinery: Used in printing presses to support cylinders, ensuring consistent and high-quality output.
- Large Electric Motors and Generators: Supports the rotor shaft, providing stability and efficient power transmission.
- Vibrating Screens and Crushers: Ideal for heavy-duty quarrying and mining equipment that experiences severe vibrations and shock loads.
Benefits of Using the NN 3076 Bearing
- Enhanced Precision: The high radial stiffness minimizes shaft deflection, leading to improved accuracy and surface finish in machining operations.
- Increased Machine Uptime: The robust design and long service life reduce the frequency of maintenance and costly downtime.
- Improved Operational Efficiency: Low-friction characteristics contribute to reduced energy consumption and cooler running temperatures.
- Simplified Assembly: The separable design facilitates easier installation and inspection, saving time and labor.
- High Load Support: Capable of managing very heavy radial loads, making it suitable for the most demanding industrial environments.
- Reliable Performance: Provides consistent and dependable operation, ensuring the stability and longevity of the machinery it is part of.
