China Hl-A4vtg71ep Axial Piston Variable Pump

The concept of HILEAD A4V series design applies oblique cylinder hole structure, spherical with flow, static pressure balanece, and shaft drive structural design. The hydraulic pump has a high rated working pressure, low noise, good self-priming ability, stable performance alternating load, can withstand the radial force, has multiple forms of variable, and long working life etc.
HILEAD A4VTG series hydraulic pump has a variety of variable form of matched control conditions for any hydraulic system applications.

Hydrulic control,Mechanical ServoHWProportional Control,Electric, with emergencyEP

1.Hydraulic Units for Travelling Machinery.
2.Variable axial piston pump of swashplate design for mobile concrete mixers,closed circuit transmission.
3.Flow is proportional to drive speed and displacement and is infinitely variable
4.Adjust the angle of swashplate to realize the stepless variable
5.Flow direction changes smoothly when the swashplate is moved through the neutral position
6.Two pressure-relief valves are provided on the high pressure ports to protect the hydrostatic transmission
(Pump and Motor) from overload.
7.Auxiliary pump as the function of boosting pump & controlling oil pump
8.The maximum boost pressure is limited by a built-in boost pressure- relief valve
9.Nominal pressure 40MPA
10.Long service life , high-precision bearings
11.Parker seals