Tire Coupling Spacer Element Angular Misalignment 4 Degrees Coupling Size WE2 Horsepower @ 100 RPM 0.3 hp Maximum Speed 7 500 RPM Maximum Torque 190 in-lb Maximum Hub Spacing 0.25 in Tire Outside Diameter 3.7 in Element Overall Length 5.92 in Parallel Misalignment 0.0625 in Element Type Spacer Center Element Weight 1.6 lb Application Blowers Compressors Fans Generators Numerous Industrial Applications Including Pumps Motors Element Flex Material Polyether Urethane