Flange Bearing for Case IH Disc Harrow Round 1 3/4 inchFlange Bearing for Case IH Disc Harrow Round 1 3 4 inch The disc harrow bearing assembly comes complete with a grease zerk to keep your bearing rotating smoothly. The assembly is 5 inches square with 4 bolts and a 5 inch bolt circle. The disc bearing has a 1 3 4 inch round bore *Flange plates connected with 8 rivets SPECIFICATIONS Interchange SN3215, 737321R93, PMFD209RA, ST491A IMP, 3215, ST491A, SMA491A, FD209RA, Inner Bore Round 1 3 4" Net Weight