Rexroth A4VG28/A4VG45/A4VG50/A4VG56/A4VG71/A4VG125/A4VG180/A4VG250
Axial Piston Variable Hydraulic PumpFeatures:1.type axial plunger
variable pump for closed circuit hydrostatic drive2.The flow rate
is proportional to the driving speed and displacement and can be
variable without grade3.The flow rate increases from zero to its
maximum with the Angle of inclined disk4.The flow direction of the
liquid flow can be changed smoothly by making the inclined disk
swing through the middle position5.Various variable modes that are
easy to match with various control and regulation systems6.The
inlet pump is equipped with two overflow valves on the
high-pressure oil side to protect the static hydraulic drive (pump
and motor) from overload7.The high-pressure overflow valve of the
inlet also has the function of filling oil valve8.The internal
auxiliary pump is used as the refill pump and control pump9.The
maximum oil refill pressure is limited by a built-in oil refill
overflow valve10.Full series with built-in pressure shutoff
valves11.Nominal pressure 400 bar,Peak pressure 450 Control
mode:NV type, no control deviceDG- hydraulic control, direct
control typeEz-electrical two-point control with switching
electromagnetHd-hydraulic control, related to pilot pressureHW-
hydraulic control, mechanical servoEP- electrical control with
proportional electromagnetDA- hydraulic control, related to
decelerationTechnical
Data: SizeA4VG40 A4VG56A4VG71A4VG90A4VG125A4VG180A4VG250Displacement
Vgmax cm3/r40567190125180250Max
speed n=max rpm4000360033003050285025002400boost pump
(20 bar) Vg
Sp cm38.611.619.619.628.339.852.05Flowcontinuous and Vg
max l/min 160202234275356450600Powercontinuous Vg
max 400 bar kW107134156183237300400Moment of
inertia JGR kgm20.00380.0066 0.00970.01490.02320.04440.0983Weight
approx. m Kg3138506080101156Photos: /*
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