The NTN RNA4934 is a high-quality needle roller bearing without an inner ring, manufactured by NTN. This design allows for a compact radial cross-section, making it suitable for applications where space is limited and the shaft can be hardened and ground to serve as the raceway. It provides high load carrying capacity and stiffness, ensuring reliable performance in demanding industrial machinery. The bearing features a bore diameter of 170 mm, an outer diameter of 200 mm, and a width of 45 mm, making it a robust component for various power transmission and rotating equipment.