These mechanical linear actuators are preassembled and ready to use. Synchro-use actuators connect at the linkage shaft to be used in pairs. The synched carriages on the two units move along with the rotation of the single shaft. They can be used with simple manual adjustments without complex processes of parts selection, design and assembly. Horizontal and vertical use. Link shaftless MAU5040DS-Y actuators with MAU5040DS-R actuators. Link shaftless MAU5040DS-Z actuators with MAU5040DS-L actuators. The internal parts are protected from dust by an aluminum profile body and dustproof sheet. The body is made from A6N01 aluminum. End plates made from chrome-plated die cast zinc. The shaft is made from 1045 steel with a black oxide finish.