Adjustable Pulleys

Adjustable Pulleys

Capable of wide speed variation they are intended for application where the speed change is infrequent. These pulleys are fitted with Taper-bushing for ease of installation and dsimantling.
Due to the construction of the Uni-drive UD pullesy, the belt does not remain in line as the pulley is adjusted in pitch diameter. This slight angle at which Uni-drive Vee-belts operates does not appreciably shorten the belt life or lower the efficiency of the drive. The drive however must be carefully aligned, with the driving and driven shafts parallel and , in the case of a single groove a Uni-drive Vee-belt should run at right angles to the shafts with the Uni-Drive UD pulley set to give a mean belt position. A drive using 2 belts should be set so that the centre line of both the twin groove Uni-drive UD and the mating pulley are directly in line.