Rigid Shaft Coupling Bore Diameter 1 1 7/16 in Bore Diameter 2 1 in Bore Type Round Clearance Diameter 2.84 in Coupling Construction One-Piece Coupling Material Stainless Steel Coupling Outside Diameter 2 5/8 in Different Bore Sizes Yes Keyway Depth 1 Not Applicable Keyway Depth 2 Not Applicable Minimum Bore Diameter 1 in Keyway Width 1 Not Applicable Keyway Width 2 Not Applicable Maximum Bore Diameter 1 7/16 in Maximum Speed 4 000 RPM Maximum Torque 3 100 in-lb