GW208PPB8-IMP Square Bore Relubable Heavy Disc BearingOne New Aftermarket Replacement Square Bore Relubricable Heavy Disc Harrow Bearing This heavy duty agricultural disc harrow bearing features a 1 1 8" square bore with a spherical outer diameter and triple lip seals for protection in tough field conditions. Designed for disc harrow and disc gang applications across multiple major equipment brands, this relubricable bearing allows grease to be added to extend service life. Compatible with AMCO, Fits