RNAO 52x75x12 Inner Ringless Needle Roller Bearing | CR Standard | High Radial Load
The RNAO 52x75x12 is a precision inner ringless Needle Roller Bearing engineered for applications demanding maximum radial load capacity within a highly restricted space envelope. This CR-grade bearing features a hardened annular outer ring (75 mm) and a robust cage assembly containing precisely manufactured needle rollers. The inner ringless design (52 mm bore) is specifically intended for installations where the shaft surface itself is induction-hardened and ground to serve as the raceway. This design strategy maximizes the effective cross-section of the rollers, resulting in significantly higher dynamic and static load ratings compared to traditional ball or standard roller bearings of similar envelope size, making it essential for heavy-duty industrial machinery.
Optimized for reliability and long service life, the RNAO 52x75x12 is a top choice for critical applications such as automotive transmissions, industrial gearboxes, hydraulic pump assemblies, and continuous running equipment. Its compact 12 mm width ensures minimal axial space requirements, simplifying machine design. Utilizing premium quality steel components, this bearing maintains high dimensional stability and low friction under severe operating conditions. When coupled with proper shaft preparation, the CR RNAO series delivers unparalleled performance and operational cost savings due to reduced downtime and exceptional durability.
Key Features
Maximum Load Density: Optimizes load distribution in the smallest possible radial space.
Inner Ringless Design: Reduces overall component count and complexity when shaft serves as the raceway.
Exceptional Stiffness: High rigidity critical for precision gearing and demanding industrial drives.
CR Brand Quality: Manufactured using high-grade, heat-treated bearing steel for superior life.
Standardized Dimensions: Fully interchangeable with equivalent RNAO series bearings from leading industrial manufacturers.
