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A11V(L)O series
A11V(L)O series
Open circuit variable pump with power control and pressure cut-off, the through-drive carrying a second pump. Main pump on rigs and excavators, also truck cranes and concrete pumps.
Features
- Swash-plate axial piston variable pump for hydrostatic drives in open-circuit hydraulic systems
- Designed mainly for mobile working machinery applications
- With a pressurised reservoir or the optional integrated charge pump (impeller), the pump operates in self-priming mode
- Various control options are available to meet different application requirements
- The power control option is externally adjustable, even while the pump is running
- Through-drive capable of mounting additional gear pumps and axial piston pumps — 100% through-drive
- Output flow is proportional to drive speed and infinitely variable between qVmax and qVmin = 0
Technical data
| Size | 40 | 60 | 75 | 95 | 130 | 145 | 190 | 260 |
|---|---|---|---|---|---|---|---|---|
| Displacement · Vg maxcm³ | 42 | 58.5 | 74 | 93.5 | 130 | 145 | 193 | 260 |
| Displacement · Vg mincm³ | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Speed · max. at Vg max ①n max · rpm | 3000 | 2700 | 2550 | 2350 | 2100 | 2200 | 2100 | 1800 |
| Speed · max. at Vg ≤ Vg max ③n max1 · rpm | 3500 | 3250 | 3000 | 2780 | 2500 | 2500 | 2100 | 2300 |
| Flow · at n max and Vg maxqV max · l/min | 126 | 158 | 189 | 220 | 273 | 319 | 405 | 468 |
| Power · qV max at Δp = 350 barP max · kW | 74 | 92 | 110 | 128 | 159 | 186 | 236 | 273 |
| Torque · Vg max at Δp = 350 barT max · Nm | 234 | 326 | 412 | 521 | 724 | 808 | 1075 | 1448 |
| Torsional stiffness · Z shaftNm/rad | 88894 | 102440 | 145836 | 199601 | 302495 | 302495 | 346190 | 686465 |
| Torsional stiffness · P shaftNm/rad | 87467 | 107888 | 143104 | 196435 | 312403 | 312403 | 383292 | 653835 |
| Torsional stiffness · S shaftNm/rad | 58347 | 86308 | 101921 | 173704 | 236861 | 236861 | 259773 | 352009 |
| Torsional stiffness · T shaftNm/rad | 74476 | 102440 | 125603 | – | – | – | 301928 | 567115 |
| Moment of inertia of rotating groupJ · kgm² | 0.0048 | 0.0082 | 0.0115 | 0.0173 | 0.0318 | 0.0341 | 0.055 | 0.0878 |
| Max. angular acceleration ④α · rad/s² | 22000 | 17500 | 15000 | 13000 | 10500 | 9000 | 6800 | 4800 |
| Filling capacityV · l | 1.1 | 1.35 | 1.85 | 2.1 | 2.9 | 2.9 | 3.8 | 4.6 |
| Weight (approx.)m · kg | 32 | 40 | 45 | 53 | 66 | 76 | 95 | 125 |
Data table: theoretical values, excluding coefficients and tolerances; approximate. ① A11VO max. at Vg max. ② A11VLO max. at Vg max. ③ Max. at Vg ≤ Vg max. ④ Max. angular acceleration. A11VLO is the version with integrated charge pump, sizes 130–260 only — not the full A11VO range.