A-25521-P-AI Cup, Tapered BearingOne New Aftermarket Replacement Cup, Tapered Roller Bearing 25500 Series This tapered roller bearing cup (outer ring) is the outer race component of a 25500 series single tapered roller bearing assembly. It pairs with a compatible cone (inner ring assembly, sold separately) to form a complete bearing capable of supporting both radial and axial loads. Common applications include axle hubs, wheel spindles, gear drives, and transmissions on agricultural