Rigid Shaft Coupling Bore Diameter 1 2 in Bore Diameter 2 2 in Bore Type Round Keyed Clearance Diameter 3.56 in Coupling Construction One-Piece Coupling Material Stainless Steel Coupling Outside Diameter 3 3/8 in Different Bore Sizes No Keyway Depth 1 3/16 in Keyway Depth 2 3/16 in Minimum Bore Diameter 2 in Keyway Width 1 3/8 in Keyway Width 2 3/8 in Maximum Bore Diameter 2 in Maximum Speed 4 000 RPM Maximum Torque 7 220 in-lb Overall Length 4 7/8 in