Motion Control Coupling Angular Misalignment 0.5 Degrees Axial Motion 0.004 in Coupling Size OD13 OD8 Outside Diameter 1/2 in Over-Standard Parallel Misalignment 0.05 in Parallel Misalignment 0.004 in Break Torque 25 in-lb Disc Material Nylon Maximum Torque 1.5 in-lb Torsional Stiffness 3.4 in-lb/Deg System of Measurement Inch Maximum Speed 4 500 RPM For Hub Diameter 1/2 in Disc Material Grade 11