What are the characteristics of rotary cylinder?

Rotary cylinder (also called swing cylinder): Rotary cylinder is a pneumatic actuator that uses compressed air to drive the output shaft to do reciprocating rotation within a certain angle range. Used for rotating, pulling, overturning, sorting, clamping, opening and closing of valves, arm movement of robots, etc. There are two types of rotary cylinders: rack and pinion and vane.