R1X1-3 Split Taper Bushing, 1-3/4 in bore, is a split-taper bushing in the R1 series designed to mount pulleys, sprockets, or hubs to a keyed shaft with a matching bore. It is machined from C45 steel and finished in black oxide for durability. The bushing uses a 3/4 in per foot taper and a three-cap-screw clamping arrangement (cap screws 3/8 x 1-3/4 in), with a bolt circle diameter of 4.63 in for the mounting pattern. This part provides a keyed bore and is commonly used in power-transmission assemblies where precise hub alignment and secure clamping are required.
