To handle any type of loades that are big and heavy when time constrained these powered trolleys are used. In case of regular production cycle these transfer cars represent the best solution. To dispose of steering systems and greater powers for the same dimension and capacity load of the tired self-propelled trailers the cost for these transfer trolleys is lower. These power carts are most commonly used were there is crane work, builings with store yards, connection of equipment with a department lighting bays, and an industrial building with several bays. It is pneumatic it also has a DC motor and AC motor with a thermic at diesel cycle as main features. Translation on every kind of rail for steel wheels. On the floor or on board control through fixed push-button panel, translation self-acting management or with radio control. translation by electronic or electric .Factory electrical grid supplies power.