Product Overview: The NU 321 Cylindrical Roller Bearing
The NU 321 is a high-performance single-row cylindrical roller bearing with dimensions of 105x225x49mm. As a key component in our NU 300 Series, this bearing is engineered to handle substantial radial loads at high speeds. Its distinctive NU design features two integral flanges on the outer ring and a flangeless inner ring. This configuration allows the bearing to accommodate axial displacement of the shaft relative to the housing in both directions, making it an excellent choice for non-locating bearing positions in various industrial applications. Part of our extensive range of Cylindrical Roller Bearings, the NU 321 is manufactured from high-quality bearing steel to ensure durability and reliable operation in demanding environments.
Key Features of the NU 321 Bearing
- High Radial Load Capacity: The line contact between the rollers and raceways provides a large contact area, enabling the bearing to support heavy radial forces.
- Axial Displacement Accommodation: The NU design allows for free axial movement of the shaft, compensating for thermal expansion or mounting inaccuracies.
- Separable Design: The inner ring can be mounted independently of the outer ring and roller assembly, simplifying installation, inspection, and maintenance procedures.
- High-Speed Performance: Engineered for low friction and minimal heat generation, making it suitable for high-speed rotational applications.
- Robust and Durable: Constructed from premium-grade steel for superior strength, wear resistance, and extended service life.
- Standardized Dimensions: Manufactured to industry-standard dimensions (105x225x49mm) for interchangeability and ease of design.
Common Applications
- Industrial Gearboxes: Provides robust support for gears and shafts, handling the heavy radial loads common in gear systems.
- Large Electric Motors: Used as a non-locating bearing to support motor shafts and accommodate thermal expansion.
- Pumps and Compressors: Ensures reliable rotation of shafts in industrial pumps and compressors under heavy loads.
- Rolling Mills: Withstands the extreme radial forces and high speeds found in steel and metal processing machinery.
- Construction and Mining Equipment: Ideal for heavy-duty applications in machinery like excavators, conveyors, and crushers.
- Machine Tool Spindles: Offers the rigidity and precision required for high-speed machine tool operations.
- Wind Turbines: Used in gearboxes and main shafts to manage significant radial loads and ensure operational reliability.
Benefits of Using the NU 321 Bearing
- Enhanced Machine Reliability: Its ability to handle heavy radial loads reduces the risk of premature failure, leading to more dependable machinery.
- Simplified Assembly and Maintenance: The separable design allows for easier and quicker mounting and dismounting, minimizing downtime.
- Extended Operational Life: The low-friction design and durable materials reduce wear, resulting in a longer service life for the bearing and associated components.
- Improved Performance Under Thermal Changes: Effectively manages shaft expansion and contraction, preventing stress and maintaining smooth operation.
- Versatile Application Range: Suitable for a wide variety of heavy industrial machinery where radial loads are the primary concern.
