Product Overview: The NU 311 Cylindrical Roller Bearing
The NU 311 is a single-row cylindrical roller bearing designed for superior performance in applications requiring high radial load capacity and accommodation for axial displacement. With principal dimensions of 55x120x29mm, this bearing is a crucial component in our NU 300 Series lineup. The NU design features two flanges on the outer ring and no flanges on the inner ring, allowing the shaft to move axially in relation to the housing in both directions. This makes the NU 311 ideal for use as a non-locating bearing, perfectly suited to handle thermal expansion of the shaft.
As part of our comprehensive range of Cylindrical Roller Bearings, the NU 311 is manufactured to precise standards, ensuring reliability and a long service life. Its separable design, where the inner ring can be mounted separately from the outer ring and roller assembly, simplifies installation and maintenance procedures. This bearing is a go-to solution for heavy industrial machinery where performance and durability are paramount.
Key Features of the NU 311 Bearing
- High Radial Load Capacity: The line contact between the rollers and raceways provides a high degree of stiffness and allows the bearing to support heavy radial loads.
- Axial Displacement Accommodation: The flangeless inner ring design permits axial movement of the shaft relative to the housing, compensating for thermal expansion or mounting inaccuracies.
- Separable Design: The inner ring is separable from the outer ring and roller cage assembly, which facilitates easier mounting, dismounting, and inspection.
- High-Speed Capability: Engineered for low friction and optimized internal geometry, making it suitable for applications with high rotational speeds.
- Robust Construction: Manufactured from high-quality bearing steel for exceptional durability and resistance to wear and fatigue.
- Interchangeability: Produced to standardized dimensions, allowing for easy interchangeability with other manufacturers' equivalent bearings.
Common Applications of NU 311 Bearings
- Industrial Gearboxes: Used on floating shafts to support heavy radial loads while allowing for thermal expansion.
- Electric Motors: Commonly found on the non-locating side of large electric motors to handle shaft expansion.
- Pumps and Compressors: Provides robust support for rotating shafts in various industrial pump and compressor systems.
- Construction and Mining Equipment: Essential in heavy-duty machinery like excavators, conveyors, and crushers.
- Machine Tool Spindles: Ensures precision and reliability in high-speed spindle applications.
- Vibrating Screens and Shakers: Withstands the heavy loads and vibrations typical of screening and quarrying machinery.
- Rolling Mills: Deployed in steel and metal processing equipment where high radial loads are prevalent.
Benefits of Using the NU 311 Bearing
- Enhanced Machine Reliability: Its ability to handle heavy radial loads and thermal expansion reduces stress on machinery, preventing premature failure.
- Simplified Maintenance: The separable design makes installation, removal, and routine inspections quicker and more efficient.
- Extended Service Life: The robust design and high load capacity contribute to a longer operational life, even in demanding industrial environments.
- Improved Operational Efficiency: Low-friction characteristics minimize energy loss and heat generation, leading to smoother and more efficient machine operation.
- Versatile Performance: Suitable for a wide range of industrial applications, making it a flexible and reliable component choice.
- Reduced Downtime: The durability of the NU 311 minimizes the need for frequent replacements, keeping machinery operational for longer periods.
