Tire Coupling Hub Angular Misalignment 3 Degrees Coupling Size WE50 Horsepower @ 100 RPM 12 hp Maximum Speed 4 200 RPM Bore Type Round Keyed For Bushing Size Not Applicable Maximum Torque 7 650 in-lb Keyway Depth 3/16 in Keyway Width 3/8 in Hub Diameter 8.13 in Parallel Misalignment 0.09375 in Bore Diameter 1 3/4 in Screw Thread Size 5/8 In.-11 Set Screw Location Over Keyway System of Measurement Inch Torsional Stiffness 123 000 in-lb/rad Length through Bore 2 3/4 in