Rexroth A4vg250 Hydraulic Piston Variable Pump for Excavators

Rexroth A4vg250 Hydraulic Piston Variable Pump for Excavators

CZPT  A4vg250 CZPT piston variable Pump for Excavators

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

Description  

Collection 32
Nominal force 400 bar
Peak strain 450
Management gadget: NV, HD3, HW, DG, DA1, DA2, EP3, EP4, EZ1, EZ2
 
The A4VG axial piston variable pump in swash plate style for hydrostatic closed circuit transmissions
– Stream is proportional to push velocity and displacement and is infinitely variable
– Output stream increases with the swivel angle of the swash plate from to its highest benefit
– Circulation direction modifications smoothly when the swash plate is moved by way of the neutral place
– A vast selection of highly adaptable handle units is obtainable for diverse manage and regulating features
– The pump is equipped with two pressure-aid valves on the higher pressure ports to shield the hydrostatic transmission (pump and motor) from overload
– The high-force relief valves also purpose as enhance valves
– The built-in increase pump acts as a feed and management oil pump
– The highest improve stress is minimal by a built-in boost force reduction valve
– The integral stress reduce-off is regular

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

Measurement A4VG40 A4VG56 A4VG71 A4VG90 A4VG125 A4VG180 A4VG250
Displacement
variable pump
Vg max cm3 forty fifty six 71 90 a hundred twenty five a hundred and eighty 250
enhance pump (twenty bar) Vg Sp cm3 eight.six 11.six 19.six 19.6 28.3 39.8 fifty two.five
Velocity
optimum Vg max
conti.  rpm 4000 3600 3300 3050 2850 2500 2400
restricted maximum limited rpm 4200 3900 3600 3300 3250 2900 2600
intermittent max. Min. rpm 5000 4500 4100 3800 3450 3000 2700
nmin rpm five hundred 500 five hundred five hundred 500 five hundred 500
Flow
ongoing and Vg max
l/min 160 202 234 275 356 450 600
Energy
constant Vg max
four hundred bar kW 107 134 156 183 237 three hundred four hundred
Torque
at Vg max
four hundred bar Nm 255 356 451 572 795 1144 1590
100 bar Nm sixty three.5 89 112.8 143 198.8 286 398
Second of inertia JGR kgm2 .0038 .0066 .0097 .0149 .5712 .0444 .0983
Angular acceleration α rad/s2 30000 24000 21000 18000 14000 11000 6700
Filling potential V L one.one one.5 one.three 1.five 2.1 3.1 six.three
Weight approx. m kg 31 38 fifty 60 eighty 101 156

 

Rexroth A4vg250 Hydraulic Piston Variable Pump for Excavators