Product Overview: The NA 4909 Machined Needle Roller Bearing
The NA 4909 is a high-capacity machined needle roller bearing with an inner ring, featuring dimensions of 45x68x22mm. This component is a vital part of our NA Series and the broader Needle Roller Bearings collection. Designed for applications with high radial loads and limited space, the NA 4909 incorporates a robust machined outer ring and an inner ring, allowing it to be used on shafts that are not hardened. Its compact cross-section makes it an excellent choice for designs where other bearing types would be too large.
As a premier supplier of industrial components, we ensure our NA 4909 bearings meet stringent quality standards, delivering reliability and performance in demanding environments. The caged needle rollers are precisely guided, which minimizes friction, reduces heat, and allows for higher operational speeds. This bearing is a go-to solution for engineers and maintenance professionals needing a compact yet powerful radial bearing solution.
Key Features of the NA 4909 Bearing
- Compact and High-Capacity Design: Offers exceptional radial load-carrying capability within a very small cross-section.
- Machined Outer Ring: Provides high rigidity and strength, making it suitable for heavy-duty applications.
- Includes Inner Ring: Allows for use on standard shafts without the need for special heat treatment or grinding, simplifying design and reducing costs.
- Caged Needle Rollers: Ensures proper roller guidance for lower friction, higher speed ratings, and longer service life.
- Dimensional Stability: Manufactured to precise tolerances for consistent and reliable performance.
- Versatile Mounting: Can be easily press-fit into a housing, providing a secure and accurate fit.
Common Applications of NA 4909 Bearings
- Industrial Gearboxes: Supports gears and shafts in transmission systems where space is at a premium.
- Automotive Transmissions: Used in various transmission components to handle high radial forces.
- Two-Stroke Engines: Ideal for connecting rods and crankshafts due to their high performance in oscillating conditions.
- Pumps and Compressors: Provides reliable support for rotating shafts in various industrial pumps.
- Construction and Agricultural Machinery: Employed in pivot pins and linkages where heavy loads and limited space are common.
- Power Tools: Used in high-speed applications like drills and sanders to provide robust support.
- Printing and Textile Machinery: Ensures smooth and precise movement of rollers and shafts.
Benefits of Using the NA 4909 Bearing
- Space Efficiency: Its low sectional height allows for more compact and lightweight machinery designs.
- Enhanced Load Support: Capable of handling significantly higher radial loads compared to ball bearings of similar dimensions.
- Increased Machine Uptime: The durable construction and reliable performance reduce the likelihood of premature failure and costly downtime.
- Simplified Assembly: The presence of an inner ring makes it compatible with soft shafts, simplifying the overall design and installation process.
- Improved Operational Efficiency: Low friction and high-speed capabilities contribute to smoother and more energy-efficient machinery.
- Cost-Effective Solution: Provides a high-performance bearing solution without the need for expensive shaft hardening, saving on manufacturing costs.
