3980 Bearing Cone Fits TimkenOne New Aftermarket Replacement 3980 Bearing Cone for Timken Applications This aftermarket replacement for the Timken 3980 is a single tapered roller bearing cone (inner ring assembly) from the 3900 Series. The cone pairs with a compatible cup (outer ring, sold separately) to form a complete Type TS tapered roller bearing capable of supporting both radial and axial loads. It is typically mounted in opposing pairs on a shaft and is well suited for high