Ball hinge mechanism is used for connecting pieces of actuators of automatic control and adjustment mechanism, this series of products for electric power, meta-llurgy, mining, chemical, textile and other industrial automatic control system, is a widespread connecting mechanism. The product can bear the load of different surface, the structure is compact, the control is sensitive, accurate and wear resistance; the connection has the direct selling and the taper pin; the connecting rod is connected with the left and right thread. Convenient and reliable, large adjustment range; product design, can be in the dust and ash more working condi-tions, wet, low temperature -30°~+70° under the conditions of use.