Variable pitch sheaves allow infinite speed adjustments by changing pulley diameter without swapping parts. Made from high-strength aluminum or steel, they feature smooth grooves and balanced design for vibration-free use. Adjustable by handwheel or motor, they’re ideal for conveyors, pumps, and fans needing quick, precise speed changes. Download free 3D CAD models (STEP files) from our Engineering CAD Library to check fit and optimize your drive designs.