Flange Coupling Kit For Worm Center Distance 3.25 in Motor Frame Designation 182TC/184TC Motor Coupling Bore Diameter 1 1/8 in Motor Coupling Keyway Depth 3/32 in Motor Coupling Keyway Width 3/16 in Reducer Coupling Bore Diameter 7/8 in Reducer Coupling Keyway Depth 3/32 in Reducer Coupling Keyway Width 3/16 in Flex Coupling Material Cast Iron For Use With 182TC/184TC NEMA Frame Motor Dayton Indirect Drive Right Angle Speed Reducer Worm Center Distance 3.25