Rigid Shaft Coupling Bore Diameter 1 40 mm Bore Diameter 2 40 mm Bore Type Round Keyed Clearance Diameter 84 mm Coupling Construction One-Piece Coupling Material Carbon Steel Coupling Outside Diameter 77 mm Different Bore Sizes No Keyway Depth 1 3.5 mm Keyway Depth 2 3.5 mm Minimum Bore Diameter 40 mm Keyway Width 1 12 mm Keyway Width 2 12 mm Maximum Bore Diameter 40 mm Maximum Speed 4 000 RPM Maximum Torque 1 325 N-m Overall Length 108 mm Shaft Locking Type Clamp On