1.The service life and tooth profile accuracy of the belt pulley have an important impact on the synchronous belt transmission. If the belt pulley exceeds its service life, it is easy to lead to changes in the tooth profile, which will lead to incorrect meshing between the belt tooth and the gear tooth, and will cause the synchronous belt to fail in a short period of time.
2.The common failure forms of the belt pulley are tooth surface wear and pitting. Therefore, the material and tooth surface hardness of the synchronous belt pulley have an important impact on the transmission quality. The tooth surface of the belt pulley should have sufficient wear resistance and contact strength. Generally, the belt pulley can be made of medium carbon steel or medium carbon alloy structural steel, which can be normalized or quenched and tempered to make the tooth surface hardness between 200 and 260 HB. Higher strength, surface hardness and good toughness can meet the actual needs of the project. Because the hardness is moderate, the tooth profile can be precisely cut after heat treatment.
3.In synchronous toothed belt drive, in order to avoid the synchronous belt slipping from one side of the pulley, the pulley must have a stop plate, which should be 1 to 2 mm higher than the back of the belt and have an inclination of about 5 degrees.
4.When the belt pulley speed is greater than the limit speed, dynamic balancing must be carried out. When the belt pulley speed is less than the limit speed, only static balancing is required. After balance detection, the residual unbalance of the belt pulley shall not be greater than the allowable value.
5.If the belt pulley is installed askew, the side of the belt is pressed against the baffle plate, resulting in increased wear on the side of the belt. Therefore, pay attention to the parallelism of pulley axis during installation, so that the transmission center plane of each pulley is in the same plane.