Rigid Shaft Coupling Bore Diameter 1 20 mm Bore Diameter 2 20 mm Bore Type Round Clearance Diameter 48.9 mm Coupling Construction Two-Piece Coupling Material Stainless Steel Coupling Outside Diameter 42 mm Different Bore Sizes No Keyway Depth 1 Not Applicable Keyway Depth 2 Not Applicable Minimum Bore Diameter 20 mm Keyway Width 1 Not Applicable Keyway Width 2 Not Applicable Maximum Bore Diameter 20 mm Maximum Speed 4 000 RPM Maximum Torque 110 N-m Overall Length 65 mm