Lovejoy 69790441257 HERCUFLEX FX Series 41257 FX 3.5S Steel Rigid Hub, 60 mm Bore, 174.5 mm OD, 18 mm x 4.4 mm Keyway, 106.4 mm Length Through Bore

                The Hercuflex coupling has increase nominal torque, larger maximum bore size and longer service life. It is interchangeable with standard AGMA flange interface.