Volvo Excavator Hydraulic Pump A4vg Series A4vg40, A4vg56, A4vg71, A4vg90, A4vg125, A4vg180, A4vg250

Volvo Excavator Hydraulic Pump A4vg Series A4vg40, A4vg56, A4vg71, A4vg90, A4vg125, A4vg180, A4vg250

CZPT A4VG PUMP

 
CZPT A4VG hydraulic pump for DAEWOO CZPT
 
CZPT variable displacement axial pump A4VG40, A4VG56, A4VG71, A4VG90, A4VG125, A4VG180, A4VG250

Description  

Sequence 32
Nominal force 400 bar
Peak force 450
Management unit: NV, HD3, HW, DG, DA1, DA2, EP3, EP4, EZ1, EZ2
 
The A4VG axial piston variable pump in swash plate layout for hydrostatic shut circuit transmissions
– Circulation is proportional to travel pace and displacement and is infinitely variable
– Output flow will increase with the swivel angle of the swash plate from to its optimum benefit
– Stream path adjustments smoothly when the swash plate is moved by means of the neutral place
– A wide range of hugely adaptable management products is available for various management and regulating features
– The pump is equipped with two stress-aid valves on the large stress ports to safeguard the hydrostatic transmission (pump and motor) from overload
– The substantial-stress relief valves also purpose as increase valves
– The built-in boost pump acts as a feed and handle oil pump
– The greatest increase stress is restricted by a built-in improve pressure aid valve
– The integral stress cut-off is CZPT

CZPT Data 
Desk of values (theoretical values, with out effectiveness and tolerances values rounded)

Dimensions A4VG40 A4VG56 A4VG71 A4VG90 A4VG125 A4VG180 A4VG250
Displacement
variable pump
Vg max cm3 forty fifty six seventy one 90 one hundred twenty five one hundred eighty 250
boost pump (20 bar) Vg Sp cm3 eight.six 11.6 19.six 19.6 28.three 39.8 52.five
Velocity
highest Vg max
conti.  rpm 4000 3600 3300 3050 2850 2500 2400
restricted optimum constrained rpm 4200 3900 3600 3300 3250 2900 2600
intermittent max. Min. rpm 5000 4500 4100 3800 3450 3000 2700
nmin rpm 500 five hundred 500 500 five hundred five hundred 500
Flow
constant and Vg max
l/min a hundred and sixty 202 234 275 356 450 600
Energy
continuous Vg max
400 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 63.five 89 112.8 143 198.8 286 398
Instant 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 1.1 1.5 one.3 1.five two.1 3.1 six.three
Fat approx. m kg 31 38 50 sixty 80 one zero one 156

 

Volvo Excavator Hydraulic Pump A4vg Series A4vg40, A4vg56, A4vg71, A4vg90, A4vg125, A4vg180, A4vg250