Hydraulic main pump for excavators and construction machineries

A10VO pump is an axial Piston pump, Swash Plate Design, for open circuits. Widely used for the hydraulic system

A6V, A7V pump widely adopt for hydrostatic transmissions.Enhancing the output speed at smaller angle.Cost-saving achieved by elimination of gearboxes. High overall efficiency.The variable displacement motor is specially designed with secondary control range for hydrostatic transmission,as its displacement varies max/min=3.47.

A4V Series Pump is swash plate design and used for hydraulic transmissions in closed circuit.Flow is proportional to input speed and displacement and is infinitely variable.
A highly adaptable range of control and regulating devices is available for various control and adjust function.The pump is equipped with two pressure relief valve on the high pressure ports to protect the hydraulic transmission from overload.These valves also function as boost pilot valves in standard model of the A4V series.An integral auxiliary pump serves as boost and pilot oil pump.The maximum boost pressure is limited by a built-in boost pressure relief valve.

A2F Fixed Piston Pump, the axial tapered piston unit of bent axis design with fixed displacement,for use as either pump or motor in hydrostaticdrives,in open or closed circuit system.
When operated as a pump,the flow is proportional to the drive speed and the displacement.
When operated as motor,the output speed is proportionalto the flow and inversely proportional to the displacement.The output torque increases with the pressure drip betweenthe high and low pressure sides.

A2F, A4V, A6VM, A7V, A10VO series pump.
Self-centering, low peripheral speed, high efficiency.
Long service life.
Low noises.