Single-acting cylinder is one of the common cylinders. Divided into spring reset and external force reset. Pneumatic actuators are mainly divided into linear reciprocating type, swing type and continuous rotary type. The cylinder is divided into single-acting type, double-acting type, rodless type, diaphragm type, air bag type, impact type, locking type, guide type, short stroke type, swing type, finger type, combined type, etc., according to its structure , Different functions and shapes, a wide variety.
The cylinder is mainly composed of a piston, a cylinder barrel, front and rear end covers, a piston rod, a spring, a tie rod, and a sealing ring. One end of the cylinder is driven by compressed air, the other end communicates with the atmosphere, and the return is driven by a spring. The driving force of this kind of cylinder forward will be partially offset by the spring. Generally, the stroke of the single-acting spring return cylinder cannot be too long.