Mechanical processing for rotating the program, whereas in the mounting fitting is able to improve the work efficiency, but also facilitates the use of air expansion shaft convenience, for use in the air expansion shaft in principle, belong to a special yield Rolling and unwinding applications, and after high-pressure inflation, the rotation speed can be increased during the air pressure saturation process. Thus, the function of rewinding and unwinding can be increased.

Second: the hardness of steel

   Among the materials selected for the air expansion shaft, high-quality and high-hardness steel must be selected. It can improve the support pressure in the expansion and can effectively promote the effect of large weight bearing.