The Timken 399A is a high-quality tapered roller bearing cone designed for demanding applications requiring robust performance and durability. This genuine Timken component is engineered to manage both radial and axial loads, providing reliable operation in various industrial and agricultural machinery. It is typically paired with a corresponding cup (e.g., 394A or 394AS) to form a complete tapered roller bearing assembly. Key dimensions include a bore of 95.25 mm (3.75 inches), an outer diameter of 152.4 mm (6 inches), and a width of 36.5125 mm (1.4375 inches). This bearing cone is known for its precision manufacturing and long service life.