Product Overview: The NA 4912 Machined Needle Roller Bearing
The NA 4912 is a high-precision needle roller bearing, featuring an inner ring, designed for applications requiring high radial load capacity within a compact space. With dimensions of 60x85x25mm, this bearing is a key component in our NA Series of Machined Ring Bearings. Its design incorporates a solid, machined outer ring with flanges to guide the roller and cage assembly, providing enhanced rigidity and accuracy compared to drawn cup types. The inclusion of an inner ring allows it to be used on shafts that have not been hardened and ground, offering greater design flexibility.
As a specialist supplier of industrial mechanical parts, we ensure our NA 4912 bearings meet stringent quality standards for reliable performance in demanding environments. This bearing is part of our comprehensive range of Needle Roller Bearings, engineered to minimize friction and support heavy radial loads in a small cross-section. It is an excellent choice for space-constrained applications where other bearing types may not fit.
Key Features of the NA 4912 Bearing
- High Radial Load Capacity: The full complement of needle rollers provides a large contact area, enabling it to support significant radial forces.
- Compact and Rigid Design: Features a low cross-sectional height, saving space while the machined outer ring offers high rigidity and stability.
- Includes Inner Ring: Allows for use with standard shafts, eliminating the need for costly shaft hardening and grinding.
- Cage-Guided Rollers: The cage assembly ensures proper roller guidance, reducing friction, minimizing heat, and allowing for higher operational speeds.
- Precision Machining: Manufactured to tight tolerances to ensure optimal fit, performance, and reliability in industrial machinery.
- Flanged Outer Ring: The integrated flanges provide axial guidance for the needle roller and cage assembly, ensuring stability.
Common Applications of NA 4912 Bearings
- Industrial Gearboxes: Provides robust support for gears and shafts, handling the high loads and speeds typical in gear systems.
- Automotive Transmissions: Used in transmission systems for its compact size and ability to handle heavy radial loads.
- Pumps and Compressors: Supports rotating shafts in various types of industrial pumps and compressors.
- Construction Equipment: Ideal for pivot points and linkages in heavy machinery where space is limited but strength is crucial.
- Power Tools: Employed in high-speed electric and pneumatic tools to provide durable and compact rotational support.
- Two-Stroke Engines: Commonly used for connecting rods and crankshafts due to its high performance in oscillating conditions.
- Printing and Textile Machinery: Ensures smooth and precise movement of rollers and other rotating components.
Benefits of Using the NA 4912 Bearing
- Space-Saving Solution: Its minimal radial footprint allows for more compact and lightweight machine designs.
- Enhanced Durability: The robust construction and high-quality materials ensure a long and reliable service life under tough conditions.
- Cost-Effective Installation: The presence of an inner ring reduces shaft preparation costs and simplifies the mounting process.
- Improved Operational Efficiency: Low friction and high rigidity contribute to smoother machinery operation and reduced energy consumption.
- Versatile Application Range: Suitable for a wide variety of industrial and automotive applications where high radial loads are a primary concern.
- Reliable High-Speed Performance: The cage design allows the bearing to operate effectively at higher speeds compared to full complement designs.
