Industrial R2X3-7 Split Taper Bushing

R2X3-7/16 Split Taper Bushing is a steel, black-oxide finished split-taper bushing in the R2 family designed to mount a hub or pulley to a shaft via a tapered bore. The bore size is 3-7/16 in (3.4375 in), enabling secure engagement with compatible R2 hubs or pulleys. The outer flange diameter is 5.375 in, with a bolt-circle diameter of 4.63 in, and an overall length (LTB) of 4.875 in, delivering a robust clamping surface and room for set-screw interaction. Made from C45 steel for strength and wear resistance and finished with black oxide, this bushing commonly features a key seat of 7/8 in by 7/16 in to align with standard shaft keys. Typical applications include mounting pulleys, sheaves, or sprockets to shafts in power-transmission assemblies, where quick hub removal and secure torque transfer are important.