The material of timing pulley have general by steel, aluminum alloy, cast iron, brass. The surface treatment of timing pulley is ecru oxidation, black, galvanized, zinc plating color, high frequency quenching processing.
The function of timing pulley is transfer power from a few watts to hundreds of kw. Compact structure for many shaft driving, tension force small, do not need lubrication, no pollution, thus in the pollution is not permitted in the work environment and the situation is bad to work properly.