Rigid Shaft Coupling Bore Diameter 1 25 mm Bore Diameter 2 25 mm Bore Type Round Clearance Diameter 51.5 mm Coupling Construction One-Piece Coupling Material Stainless Steel Coupling Outside Diameter 45 mm Different Bore Sizes No Keyway Depth 1 Not Applicable Keyway Depth 2 Not Applicable Minimum Bore Diameter 25 mm Keyway Width 1 Not Applicable Keyway Width 2 Not Applicable Maximum Bore Diameter 25 mm Maximum Speed 4 000 RPM Maximum Torque 120 N-m Overall Length 75 mm