The lifting tower TS3ax has the same features of the model TS2ax but presents an additional loader directly installed on the tower structure. It allows to pick up the parts from the pallet of the tower and put them in a station easibly reachable by a robot / loader.
In the model TS3ax the loader has just one NC controlled axis which is the horizontal one, while the vertical axis is pneumatic. 
In the model TS4ax it is possible to have 2 axis NC controlled, that is to say the horizontal stroke of the trolley and vertical stroke of the arm.
For more details about the stocker, please refer to the product page "TS2ax"