Locking on to SafetyCNA series locking cylinder is available in five bore sizes (40-100 mm) and uses an integral, compact lock unit that is unaffected by the quality of the supply air. A manual override lock release is available as a standard feature. Applications include intermediate stops, emergency stops, and drop prevention. The unit uses a tapered wedge and two rows of steel balls to evenly distribute the locking force to the cylinder piston rod. A standard manual override allows the lock to be released in the absence of supply pressure.