Variable Pitch V-Belt Pulley: 1 Groove, 2.5 in Outside Dia, 1/2 in Bore Dia, 1VP25

Fixed-bore cast-iron variable-pitch V-belt pulleys have a finished bore, or center hole, that is machined to a set diameter to insert a shaft of the same size. They are ready to install with machined keyways and/or set screws to secure the shaft and prevent slipping. They are constructed of cast iron which has good wear resistance and absorbs heat.