... pulleys d) Flat belt pulleys e) Conveyor belt pulleys f) Conveyor idlers g) Taper lock pulleys h ... pulleys c) Flat belt pulleys and conveyor belt pulleys2) American standard: a) Sheaves for taper bushes: 3V ... , AT2.5,AT5, AT10, AT202) Pilot bore, taper bore and QD bore3) Materials: 1045 steel, aluminum ... d) Flat belt pulleys2) American standard: a) Sheaves for taper bushes: 3V, 5V, 8V b) Taper bushed ...