Lovejoy 69790442319 HERCUFLEX FX Series 42319 FX 4S Steel Rigid Hub, 1-15/16" Bore, 8.10" OD, 1/2" x 1/4" Keyway, 4.75" 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.