Tire Coupling Hub Angular Misalignment 4 Degrees Coupling Size WE5 Horsepower @ 100 RPM 1.5 hp Maximum Speed 7 500 RPM Bore Type Round Keyed For Bushing Size Not Applicable Maximum Torque 925 in-lb Keyway Depth 1/8 in Keyway Width 1/4 in Hub Diameter 3.13 in Parallel Misalignment 0.0625 in Bore Diameter 1 1/8 in Screw Thread Size 1/2 In.-13 Set Screw Location Over Keyway System of Measurement Inch Torsional Stiffness 9 820 in-lb/rad Length through Bore 1 3/4 in