Gates Profile BeltAlso known as synchronous belt, divided into one-sided toothed belt and two-sided toothed belt two types. The former is mainly used for single axle drive, the latter is multi-axis or reverse drive, which is a new high efficient transmission belt in the world since 1980. Toothed belt according to the shape of the tooth is divided into trapezoidal and circular arc two kinds, The torque of the circular toothed belt is the largest. From the materials used, the toothed belt can be divided into two types of rubber and polyurethane type, The former and the general rubber (usually neoprene) and special rubber (mostly saturated nbr) of the points. Their structure consists of a strong layer of steel cord or fiberglass and an outsourced rubber layer or polyurethane rubber layer formed of rubber and nylon.