Product Introduction
A10VSO Series 31 Axial Piston Pump — Key Advantages
Open Circuit Design：Swashplate axial piston variable pump engineered for open circuit hydrostatic drives, delivering reliable power across a wide range of hydraulic applications.
Stepless Flow Control：Output flow is directly proportional to drive speed and displacement. Adjusting the swashplate angle enables infinitely variable flow control for precise system matching.
High Pressure Capability：Rated pressure of 280 bar with peak pressure up to 350 bar, handling demanding medium-pressure applications with ease.
Through Drive Option：Supports 100% through drive, allowing direct mounting of additional gear pumps or axial piston pumps of the same nominal size—ideal for multi-circuit systems.
Low Noise & Long Life：Optimized design delivers low noise operation and extended service life, reducing environmental impact and maintenance costs.
Versatile Control Options：Compatible with multiple control types including pressure control (DR), flow control (DFR), power control (DFLR), and electric hydraulic control (ED).
Excellent Suction Performance：Good suction characteristics help prevent cavitation and maintain stable operation, even under demanding conditions.
Typical Applications
Injection Molding Machines：Precise flow control for clamping, injection, and ejector circuits.
Die-Casting Machines：Reliable high-pressure performance for demanding casting cycles.
Machine Tools：Stable, controllable flow for machining centers and CNC equipment.
Metallurgical Equipment：Continuous duty operation in steel and metal processing lines.
Hydraulic Presses & Press Brakes：Variable displacement for force and speed matching.
Mining & Construction Machinery：Excavators, concrete pumps, cranes, and drilling rigs.
Marine & Shipboard Systems：Hatch cover control, deck machinery, and steering systems.
General Industrial Power Units：Versatile open-circuit pump for a wide range of hydraulic power packs.
Technical Parameters
Parameter Introduction of A10VSO Series Piston Pump
| Size NG | 18 | 28 | 45 | 71 | 100 | 140 | ||
|---|---|---|---|---|---|---|---|---|
| Geometrical displacement per revolution | Vg max | ml/r | 18 | 28 | 45 | 71 | 100 | 140 |
| Maximum speed ⁽¹⁾ | at Vg max | nₙₒ rpm | 3300 | 3000 | 2600 | 2200 | 2000 | 1800 |
| at Vg < Vg max | nₙₒ max rpm | 3900 | 3600 | 3100 | 2600 | 2400 | 2100 | |
| Flow | at nₙₒ and Vg max | qᵥ max L/min | 59.4 | 84 | 117 | 156 | 200 | 252 |
| at n_E = 1500 rpm and Vg max | qᵥE max L/min | 27 | 42 | 68 | 107 | 150 | 210 | |
| Power | at nₙₒ, and Vg max | Pₒ max KW | 27.7 | 39 | 55 | 73 | 93 | 118 |
| at n_E = 1500 rpm and Vg max | P_E max KW | 12.6 | 20 | 32 | 50 | 70 | 98 | |
| Torque | at Vg max and Δp = (28Mpa) | T_max Nm | 80.1 | 125 | 200 | 316 | 445 | 623 |
| at Vg max and Δp = (10Mpa) | T Nm | 28.6 | 45 | 72 | 113 | 159 | 223 | |
| Moment of inertia on drive shaft | J_GR | kgm² | 0.00093 | 0.0017 | 0.0033 | 0.0083 | 0.0167 | 0.0242 |
| Filling capacity | V | L | 0.4 | 0.7 | 1.0 | 1.6 | 2.2 | 3.0 |
| Weight (without through drive) approx. | m | kg | 12 | 15 | 21 | 33 | 45 | 60 |
| Drive shaft allowable load | Maximum axial load | Fₐₓ max N | 700 | 1000 | 1500 | 2400 | 4000 | 4800 |
| Maximum radial load | F_q max N | 350 | 1200 | 1500 | 1900 | 2300 | 2800 |
(1) The values are applicable for an absolute pressure pabs = 15 psi (1 bar) at suction port S,Speed can be increased with reduced displacement or increased inlet pressure.
