Rigid Shaft Coupling Bore Diameter 1 7/8 in Bore Diameter 2 5/8 in Bore Type Round Keyed Clearance Diameter 1.94 in Coupling Construction Two-Piece Coupling Material Stainless Steel Coupling Outside Diameter 1 5/8 in Different Bore Sizes Yes Keyway Depth 1 3/32 in Keyway Depth 2 3/32 in Minimum Bore Diameter 5/8 in Keyway Width 1 3/16 in Keyway Width 2 3/16 in Maximum Bore Diameter 7/8 in Maximum Speed 4 000 RPM Maximum Torque 830 in-lb Overall Length 2 1/2 in