Product Overview: The NA 4911 Needle Roller Bearing
The NA 4911 is a high-capacity machined ring needle roller bearing with an inner ring, meticulously designed to handle heavy radial loads within a compact space. With principal dimensions of 55x80x25mm (Bore x Outer Diameter x Thickness), this bearing is a key component in our NA Series lineup. It is part of the broader Needle Roller Bearings category, specifically designed for applications where the shaft cannot be hardened and ground. The inclusion of a precision-ground inner ring provides an optimal raceway surface, ensuring smooth operation and extended service life.
As a leading supplier of industrial components, we ensure our NA 4911 bearings are manufactured to the highest industry standards. Their robust construction, featuring a solid machined outer ring, provides superior rigidity and performance under demanding conditions, making them an excellent choice for a wide range of industrial and automotive applications. Explore our comprehensive collection of Machined Ring Bearings to find the perfect solution for your machinery needs.
Key Features of the NA 4911 Bearing
- High Radial Load Capacity: The full complement of needle rollers provides exceptional load-carrying capability in a small cross-section.
- Compact and Rigid Design: Its low sectional height makes it ideal for applications with limited radial space.
- Includes Inner Ring: Allows the bearing to be used on shafts that are not hardened, offering greater design flexibility.
- Machined Outer Ring: Provides high strength and rigidity, making it suitable for heavy-duty applications and housing fits that are not perfectly uniform.
- Precision Engineering: Manufactured to tight tolerances to ensure reliable and consistent performance.
- Enhanced Lubrication: Often designed with a lubrication groove and hole in the outer ring to facilitate effective relubrication, crucial for longevity.
Common Applications
- Industrial Gearboxes: Provides robust support for gears and shafts, handling high torque and radial forces.
- Automotive Transmissions: Used in gear sets and planetary carriers where space is at a premium but high load capacity is essential.
- Pumps and Compressors: Supports rotating shafts, ensuring efficient and reliable operation under continuous load.
- Construction and Agricultural Machinery: Ideal for pivot points and transmissions in heavy equipment that experiences shock loads.
- Machine Tool Spindles: Offers the rigidity and precision required for accurate machining operations.
- Two-Stroke Engines: Commonly used for connecting rod and crankshaft applications due to their high performance in oscillating conditions.
Benefits of Using the NA 4911 Bearing
- Space-Saving Solution: Allows for more compact machinery designs without sacrificing load capacity.
- Increased Equipment Reliability: The durable construction and high load rating reduce the risk of premature failure, minimizing downtime.
- Versatile Application Range: The presence of an inner ring makes it adaptable for use with various standard shafts.
- Improved Operational Efficiency: Low frictional characteristics contribute to reduced energy consumption and heat generation.
- Extended Service Life: High-quality materials and precise manufacturing ensure long-term durability, even in harsh environments.
- Cost-Effective Performance: Offers a high-performance solution for heavy radial loads at an economical price point.
