Needle Roller Bearing RNA4912 68x85x25mm P0-P4 Precision for Industrial Machinery

Optimized for High-Stress Industrial Applications

The RNA4912 is a radial needle roller bearing designed to handle heavy radial loads in compact spaces, thanks to its 68x85x25mm dimensions and closed-type construction. This bearing excels in applications with moderate speeds and high load capacities, such as gearboxes and transmission systems in agricultural and industrial equipment. Its needle roller design provides superior load distribution, ensuring stable operation even under fluctuating stress conditions—critical for maintaining production efficiency in manufacturing environments.

Características técnicas que garantizan un rendimiento a largo plazo

Key technical attributes of the RNA4912 directly impact its performance in industrial settings. The precision rating (P0-P4) controls dimensional accuracy and rotational stability; P4 grade, in particular, minimizes vibration and noise, essential for precision machine tools. Clearance options (C0, C3, C4) allow customization for thermal expansion needs—C3 or C4 clearances are recommended for applications with temperature variations to prevent seizure. Constructed from high-quality bearing steel, the bearing offers excellent wear resistance, while its closed type design protects internal components from contaminants, extending service life in dusty industrial environments.