synchronous belt wheel drive is composed of a closed endless belt with teeth at equal intervals on the inner peripheral surface and corresponding pulleys. When moving, the toothed belt engages with the toothed groove of the pulley to transmit motion and power, which is a kind of meshing transmission, so it has various characteristics of gear transmission, chain transmission and flat belt transmission. Widely used in automobile, textile, printing and packaging equipment, sewing equipment, office equipment, laser engraving equipment, tobacco, financial equipment, stage lighting, communication food machinery, medical machinery, steel machinery, petrochemical industry, instrumentation, various precision machine tools and other fields.