CZPT A4vg180 CZPT piston Pump for Excavators
Brueninghaus Hydromatik CZPT A4VG pump
CZPT variable displacement axial pump A4VG40, A4VG56, A4VG71, A4VG90, A4VG125, A4VG180, A4VG250
| Description |
Series 32
Nominal pressure 400 bar
Peak pressure 450
Management system: 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
– Movement is proportional to generate speed and displacement and is infinitely variable
– Output flow raises with the swivel angle of the swash plate from to its greatest value
– Stream route changes efficiently when the swash plate is moved by means of the neutral position
– A vast variety of highly adaptable management units is offered for diverse manage and regulating features
– The pump is geared up with two force-reduction valves on the high pressure ports to defend the hydrostatic transmission (pump and motor) from overload
– The higher-strain relief valves also function as improve valves
– The built-in enhance pump functions as a feed and control oil pump
– The maximum enhance strain is restricted by a constructed-in enhance stress reduction valve
– The integral pressure reduce-off is CZPT
CZPT Data
Desk of values (theoretical values, without efficiency and tolerances values rounded)
| Dimensions | A4VG40 | A4VG56 | A4VG71 | A4VG90 | A4VG125 | A4VG180 | A4VG250 | ||
| Displacement variable pump |
Vg max | cm3 | forty | 56 | seventy one | 90 | a hundred twenty five | a hundred and eighty | 250 |
| increase pump (20 bar) | Vg Sp | cm3 | eight.six | eleven.6 | 19.six | 19.6 | 28.three | 39.eight | fifty two.five |
| Speed maximum Vg max |
conti. | rpm | 4000 | 3600 | 3300 | 3050 | 2850 | 2500 | 2400 |
| constrained optimum | restricted | rpm | 4200 | 3900 | 3600 | 3300 | 3250 | 2900 | 2600 |
| intermittent max. | Min. | rpm | 5000 | 4500 | 4100 | 3800 | 3450 | 3000 | 2700 |
| nmin | rpm | 500 | 500 | five hundred | five hundred | 500 | 500 | five hundred | |
| Stream constant and Vg max |
l/min | a hundred and sixty | 202 | 234 | 275 | 356 | 450 | 600 | |
| Power ongoing Vg max |
four hundred bar | kW | 107 | 134 | 156 | 183 | 237 | three hundred | 400 |
| Torque at Vg max |
400 bar | Nm | 255 | 356 | 451 | 572 | 795 | 1144 | 1590 |
| 100 bar | Nm | sixty three.5 | 89 | 112.8 | 143 | 198.8 | 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 potential | V | L | 1.1 | one.five | one.3 | one.five | 2.1 | 3.one | 6.3 |
| Weight approx. | m | kg | 31 | 38 | fifty | sixty | 80 | one hundred and one | 156 |