UMA Engineering is well-known manufacturers and suppliers of H (1 / 2”) pitch timing pulley taper lock 1/2” pitch pulley for 2” wide belts. Ref. H200 in India. Imperial timing drive shafts have spaced evenly grooves machined out in to the radius to provide proper optimization with the belt teeth. The pulley grooves are of special design to provide appropriate meshing with the belt teeth with minimal difficulty. All pulleys are built with the appropriate minimum meshing tolerance levels, and the pitch radius is always higher than the outside diameter. Metal and cast iron pulleys are protected with black chloride.