YT series skid steer loader is applications of closed loop hydraulic circuits to travel. Hydraulic energy comes into being by the closed loop hydraulic circuits which have two variable displacement piston pump. The hydraulic energy transfer to low-speed and high-torque piston motor through the pipeline. Wheel is revolved by the High-intensity chain. This machine through controlling the flow and direction of the variable displacement piston pump to control the forward, backward and wheeling by left and right handle. The bucket can rise, fall, load and tilt through perfect working system. It also can provide attachment with hydraulic energy, so the attachment can work effective. YT series skid steer loader is competent for work in narrow space or situation with frequently changing task. Such as municipal projects, workshop, warehouse, dock, ship deck and ship cabin etc. The loader can be competent for shoveling, lifting, excavating, drilling, snatching, scarification and clearing work with different attachments.