Polyurethane Spider Insert Coupling Size FC30 Outside Diameter 3 in System of Measurement Inch Maximum Speed 3 450 RPM Horsepower @ 100 RPM 2.2 hp Spider Material Polyurethane Maximum Torque 1 500 in-lb Parallel Misalignment 0.002 in Angular Misalignment 1 Degrees Color Tan Compatible Hub Manufacturer Part Number FC30 Fail Safe Yes For Misalignment Type Angular Parallel Horsepower @ RPM 23.3 hp @ 1150 RPM Maximum Operating Temperature 200 Degrees F