In consumer point of view, synchronous belt and chain drive is no different, but it is a wrong view, synchronous belt and chain transmission is a fundamental difference. And synchronization with the chain incomparable advantages, so this is what are the advantages? Want to know has the advantages of the synchronous belt and chain, first of all to both, synchronous belt transmission is generally by the driving wheel and driven wheel and tight set of belt on two wheels. Using flexible middle parts, by the friction between the main, driven shaft rotary motion and power. Synchronous belt is based on wire tensile body, outsourcing polyurethane or rubber. Cross section is rectangular, with surface with equidistant horizontal tooth ring belt, synchronous belt wheel wheel surface also made corresponding tooth profile. By synchronous toothed with synchronous belt between the gear tooth meshing transmission, without the relative sliding, and make the circumferential speed synchronization, is called synchronous belt transmission. Chain is composed of sprocket, ring chain, chain and sprocket meshing between the real by now synthetic transmission between the parallel axis. Compared with the tape drive sprocket drive no elastic sliding and sliding, to keep accurate average velocity ratio, need small tension, pressure on the axis of the small, can reduce the bearing friction loss, compact structure, can in the high temperature, such as oil work under the bad environment; Compared with the gear dynamic, manufacturing and installation accuracy is low, center distance is bigger when the transmission structure is simple. Synchronous belt transmission is composed of a root surface with spacing within weeks of closed loop tape and have appropriate tooth belt wheel, when running, with protruding teeth and engages with tooth slot, to transmit motion and power. And other transmission coarse than, synchronous belt transmission has the following advantages. Non-slip at work, have accurate ratio of synchronous belt transmission is a kind of meshing transmission, while the synchronous belt is elastomer, but as a result of which bear the load carrying rope under tension is not elongation characteristics, so it can keep the belt pitch unchanged, belt and the tooth groove meshing correctly, no slip of the synchronous transmission, obtain accurate transmission ratio. High transmission efficiency and good energy saving effect because of non-slip synchronous synchronous belt transmission, reason has high transmission efficiency, generally can reach 0. 98. It compared with the triangle belt transmission, has obvious energy saving effect, the following examples as evidence available. See from the above several cases, the synchronous belt transmission has great potential in energy saving, so the synchronous belt transmission can obtain higher economic benefits.