Locking cylinders lock at any desired stroke position for drop prevention. They can be used as an emergency stop or where intermediate stops are necessary. The locking position can be changed in accordance with the external stopper position and the thickness of the clamped work-piece.

End Lock Cylinders lock at the end of stroke when the air has been discharged for drop prevention. They typically contain a lock on the rod side, head side or both. No separate piping is required for end lock type actuators.