Product Overview: The NU 409 Cylindrical Roller Bearing
The NU 409 is a single-row cylindrical roller bearing engineered for high performance in demanding industrial applications. With precise dimensions of 45x120x29mm (Bore x Outer Diameter x Thickness), this bearing is a key component in our NU 400 Series. Its design features two integral flanges on the inner ring and a flangeless outer 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.
As part of our extensive range of Cylindrical Roller Bearings, the NU 409 is manufactured to handle high radial loads at high speeds. The separable design, where the outer ring can be mounted independently from the inner ring and roller assembly, simplifies installation and maintenance procedures. This bearing is essential for machinery where thermal expansion of the shaft occurs, ensuring smooth and reliable operation without inducing axial stress.
Key Features of the NU 409 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 loads.
- Axial Displacement Accommodation: The NU design allows for free axial movement between the shaft and housing, compensating for thermal expansion or mounting errors.
- Separable Design: The inner ring, with its roller and cage assembly, can be separated from the outer ring, facilitating easier mounting and dismounting.
- High-Speed Performance: Engineered for low friction and minimal heat generation, making it suitable for high-speed rotational applications.
- Robust Construction: Made from high-purity, hardened bearing steel for exceptional durability, wear resistance, and a long service life.
- Dimensional Stability: Precision manufacturing ensures consistent dimensions and reliable performance under various operating conditions.
Common Applications
- Industrial Gearboxes: Provides robust support for gears and shafts, handling the high radial forces common in gear systems.
- Electric Motors and Generators: Used as non-locating bearings to support motor shafts, allowing for thermal growth.
- Pumps and Compressors: Ensures reliable rotation of impellers and crankshafts in industrial fluid and gas handling equipment.
- Construction Machinery: Ideal for heavy-duty equipment like excavators, cranes, and road rollers that operate under significant loads.
- Machine Tool Spindles: Delivers the rigidity and precision required for high-accuracy machining operations.
- Steel and Paper Mills: Withstands the harsh conditions and heavy loads found in rolling mill and processing machinery.
- Vibrating Screens and Crushers: Provides durable support in aggregate and mining equipment exposed to high vibration and shock loads.
Benefits of Using the NU 409 Bearing
- Enhanced Machine Reliability: By accommodating axial displacement, it prevents induced stresses, reducing the risk of premature failure of the bearing and connected components.
- Simplified Installation and Maintenance: The separable nature of the bearing allows for individual component mounting, streamlining assembly and inspection processes.
- Extended Service Life: High load-carrying capacity and durable materials contribute to a longer operational lifespan, even in challenging environments.
- Improved Operational Efficiency: Low-friction design minimizes energy loss and heat build-up, contributing to smoother and more efficient machinery operation.
- Versatility in Design: Suitable for a wide range of applications where a non-locating bearing is required to manage shaft expansion and contraction.
- Reduced Downtime: Its robust design and reliability lead to fewer breakdowns and lower maintenance costs over the life of the machine.
