Tire Coupling Hub, Size - Tire Couplings WE30, Bore Type - Couplings Fixed Bore, Bore Dia. 2-7/8 In., Outside Dia. 5.42 In., Length through Bore 2.310 In., Rated Torque (In.-Lb.) 3650, Max. RPM 5800, Keyseat Size (In.) 3/4 x 3/8, Width (In.) 2.31, Height (In.) 5.42, Material of Construction Low Carbon Steel, Setscrew Location One Over Keyway, Max. Angular Misalignment 3 Degrees , Ideal For Numerous Industrial Applications, Including Pumps, Motors, Compressors