Synchronous belt of the cross section is a rectangle or similar to the shape of a rectangle, and synchronous belt of interior and exterior is a kind of annular belt, and the horizontal gear is a distance between its distribution. Below simply introduces the basic situation and the advantages of synchronous belt. A interior and outer structure of the synchronous belt, synchronous belt, including the inside and outside two layer structure, so as to form a closed loop. Synchronous belt its outer some is by wire is reinforced with glass fiber and then to. Its endless belt is made from polyurethane, such as its outer covering. Its internal gear form a layer of paper. ' It will be a very good can it and toothed belt wheel was performed. So you can drive. And also be more accurate to use, and also for the role of the shaft to reduce to a certain extent, the structure more compact. And it also has the characteristics of the oil resistance, abrasion resistance and anti-aging performance. This product is in commonly minus 20 degrees Celsius to 80 degrees above freezing are able to use. Second, the synchronous belt synchronous belt contains the advantages of transmission, chain drive, gear drive a variety of ways, so it also combines the advantages of these transmission. It at the time of transmission can provide accurate transmission, general won't appear slip. And drive it is relatively stable. To prevent vibration and noise is relatively small. The speed of the synchronous belt it allows line nearly 50 meters per second. And transfer of power is also can from several watts to several kilowatts are allowed, and the efficiency is very high. It has many advantages, such as its structure is very compact, and it is not like a normal transmission and lubricant, synchronous belt is not to need lubricating. So don't cause pollution.