Disc Harrow Double Taper Roller Bearing Kit Fits John Deere 1635 1630 AB14028One New Aftermarket Replacement Disc Harrow Double Taper Roller Bearing Kit Fits John Deere Disc Harrows and Cane Cultivators This complete double tapered roller bearing kit Fits John Deere 1 1 2" square bore disc harrow gang bolt assemblies. The kit services the trunnion assembly on Fits John Deere disc harrows as well as compatible Midland, M&W, and cane cultivator applications, providing a full set of new components for a complete bearing renewal