Jaw Coupling Hub Coupling Size MJS33 Outside Diameter 33.3 mm Coupling Overall Length 44.5 mm System of Measurement Metric Hub Material Aluminum Maximum Speed 8 000 RPM Keyway Depth 1.8 mm Keyway Width 4 mm Bore Diameter 12 mm Shaft Locking Type Set Screw Bore Type Round Bore with Keyway Jaw Profile Curved Screw Thread Size M4 Bore Tolerance +0.05/-0.00 mm Fail Safe Yes Shaft Tolerance +0.000/-0.013 mm Full Bearing Support Required Yes Hub Diameter 33.3 mm