Tire Coupling Hub Angular Misalignment 2 Degrees Coupling Size WE60 Horsepower @ 100 RPM 20 hp Maximum Speed 3 800 RPM Bore Type Round Keyed For Bushing Size Not Applicable Maximum Torque 12 500 in-lb Keyway Depth 7/16 in Keyway Width 7/8 in Hub Diameter 8.75 in Parallel Misalignment 0.125 in Bore Diameter 3 3/8 in Screw Thread Size 3/4 In.-10 Set Screw Location Over Keyway System of Measurement Inch Torsional Stiffness 167 000 in-lb/rad Length through Bore 3 1/4 in