Variable Speed Pulleys and Belts

When it comes to Variable speed belts YB Components are your go-to supplier.

Variable speed belts (sometimes called adjustable-speed belts, speed-change belts, or variator belts) are V-type drive belts designed to transmit power between pulleys whose effective diameters can change to vary the speed ratio between the driving and driven shafts.

A variable speed pulley changes the speed ratio between a driving motor and a driven machine, without changing pulleys or belts. It does this by changing its effective pitch diameter while keeping the belt engaged, allowing continuous (stepless) speed adjustment.