The NTN NF 309 is a high-performance single-row cylindrical roller bearing (CRB) designed specifically to handle extremely heavy radial loads and high-speed operation in demanding industrial environments. The 'NF' configuration signifies that the outer ring has two integral flanges, while the inner ring features one flange. This geometry not only provides outstanding radial stiffness but also allows the bearing to locate the shaft axially in one direction while accommodating minor axial displacement due to thermal expansion in the other. Constructed from high-quality bearing steel, the NF 309 is optimized for applications requiring minimal friction, superior shock resistance, and maximum operational lifespan.
Ideal for use in large gearboxes, industrial pumps, heavy-duty transmissions, and electric motors, this NTN bearing ensures reliable power transmission and reduced maintenance cycles. The separable components (inner ring, outer ring, and cage assembly) simplify installation and inspection, significantly reducing downtime during maintenance. As a premium product from NTN, a global leader in precision bearing technology, the NF 309 guarantees dimensional accuracy and high internal clearance control, providing operators with a robust and cost-effective solution for minimizing friction loss and maximizing machinery throughput.
Key Features
Exceptional Dynamic and Static Load Capacity (93.7 kN C)
NF Configuration: Locates shaft axially in one direction while accommodating thermal expansion.
Separable Design for simplified mounting, maintenance, and inspection.
Precision-machined races ensure low running friction and heat generation.
High-grade industrial steel construction for maximum wear resistance and longevity.
Suitable for heavy-duty applications including gear drives, rolling mills, and compressors.
