Can a single-acting semi-rotary actuator be converted from “closing with spring force” to “opening with spring force”?
A single-acting quarter turn actuator can be ordered in versions which close or open with spring force. The difference lies in the 180° rotation of the pistons, so that the shaft rotates in the opposite direction to normal. When converting a quarter turn actuator from one that closes with spring force to one that opens with spring force, the pistons must be rotated 180°. Rotating the pistons causes the racks on the opposite side of the shaft to take hold, forcing the shaft with the force of the springs to rotate to the left.
