Lovejoy 69790441052 HERCUFLEX FX Series 41052 FX 3.5E Steel Rigid Hub, Length Through Bore 4.19", 2-7/16" Bore, 6.87" OD, 5/8" x 5/16" Keyway

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