Rexroth A4vg Hydraulic Pump for Excavators

Rexroth A4vg Hydraulic Pump for Excavators

CZPT A4VG PUMP

 
Brueninghaus Hydromatik CZPT A4VG pump
 
CZPT variable displacement axial pump A4VG40, A4VG56, A4VG71, A4VG90, A4VG125, A4VG180, A4VG250

Description  

Series 32
Nominal strain 400 bar
Peak pressure 450
Control system: NV, HD3, HW, DG, DA1, DA2, EP3, EP4, EZ1, EZ2
 
The A4VG axial piston variable pump in swash plate design and style for hydrostatic closed circuit transmissions
– Stream is proportional to drive speed and displacement and is infinitely variable
– Output stream boosts with the swivel angle of the swash plate from to its maximum value
– Movement direction alterations easily when the swash plate is moved by way of the neutral situation
– A broad variety of extremely adaptable manage units is obtainable for diverse handle and regulating functions
– The pump is equipped with two pressure-aid valves on the substantial pressure ports to defend the hydrostatic transmission (pump and motor) from overload
– The large-stress reduction valves also perform as improve valves
– The built-in improve pump acts as a feed and management oil pump
– The highest improve force is restricted by a developed-in increase pressure relief valve
– The integral stress cut-off is regular

Technical Data 
Desk of values (theoretical values, without having performance and tolerances values rounded)

Size A4VG40 A4VG56 A4VG71 A4VG90 A4VG125 A4VG180 A4VG250
Displacement
variable pump
Vg max cm3 forty 56 71 90 125 180 250
increase pump (twenty bar) Vg Sp cm3 8.six eleven.six 19.six 19.six 28.3 39.eight fifty two.5
Velocity
greatest Vg max
conti.  rpm 4000 3600 3300 3050 2850 2500 2400
minimal optimum limited rpm 4200 3900 3600 3300 3250 2900 2600
intermittent max. Min. rpm 5000 4500 4100 3800 3450 3000 2700
nmin rpm 500 500 500 500 five hundred 500 500
Stream
constant and Vg max
l/min 160 202 234 275 356 450 600
Electricity
steady Vg max
400 bar kW 107 134 156 183 237 300 400
Torque
at Vg max
400 bar Nm 255 356 451 572 795 1144 1590
one hundred bar Nm sixty three.five 89 112.eight 143 198.eight 286 398
Moment of inertia JGR kgm2 .0038 .0066 .0097 .0149 .5712 .0444 .0983
Angular acceleration α rad/s2 30000 24000 21000 18000 14000 11000 6700
Filling capability V L 1.one 1.five 1.3 one.five 2.1 three.1 six.three
Bodyweight approx. m kg 31 38 50 sixty eighty 101 156

 

Rexroth A4vg Hydraulic Pump for Excavators