Rigid Shaft Coupling Bore Diameter 1 30 mm Bore Diameter 2 30 mm Bore Type Round Keyed Clearance Diameter 58.7 mm Coupling Construction Two-Piece Coupling Material Carbon Steel Coupling Outside Diameter 53 mm Different Bore Sizes No Keyway Depth 1 3.5 mm Keyway Depth 2 3.5 mm Minimum Bore Diameter 30 mm Keyway Width 1 8 mm Keyway Width 2 8 mm Maximum Bore Diameter 30 mm Maximum Speed 4 000 RPM Maximum Torque 475 N-m Overall Length 83 mm Shaft Locking Type Clamp On