The SKF NK4520TN is a high-performance needle roller bearing, specifically a needle roller and cage assembly, designed for demanding industrial applications. It features an inner diameter of 45 mm, an outer diameter of 55 mm, and a width of 20 mm. The 'TN' designation signifies a glass fibre reinforced polyamide 66 cage, which provides excellent resistance to shock loads and vibrations. This genuine SKF component is engineered to offer high radial load capacity within a small radial cross-section, making it suitable for compact designs where the shaft can serve as the raceway.