SD series hollow rotary actuators small actuator rotary actuator electric JD-AS-25/K/F is used in the structural design of composite structures, the generalization, standardization, seriation products in parts into consideration is more considerate, makes the product by machinery, motor, control circuit, combined to form a variety of different series and specifications, users in the use and maintenance of the greatly reduced the number of varieties of spare parts needed. The basic base of the product reducer adopts the high strength aluminum alloy, the mechanical structure design is concise and compact, the reliability is high, the volume is small, the weight is light;Multiple connections can be installed in any position and direction.