HL-A4VSO HYDRAULIC PUMPS
Variable Displacement Axial Piston Pump for Open Circuit

Variable Displacement Axial Piston Pump for Open Circuit

The HL-A4VSO variable displacement pump is designed to adapt to your system's needs, ensuring efficient and reliable hydraulic power output for your open-loop applications. Whether you're managing industrial equipment or mobile machinery, this pump provides the precise control and high performance you require.

  • Displacement 40-500 cm³/rev
  • Nominal pressure 350 bar
  • Max. allowable pressure 400 bar
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Technical Data
Size
Displacement
(cm³/rev)
Max. speed
(rpm)
Max. Flow
(L/min)
an=nmax
n=1500rpm
Max. Power(kw)
Δp=350 bar
n=nmax
n=1500rpm
Details
40
40
2600
104
60
61
35
Displacement Vg max cm³/rev 40
Max. rotation speed nmax rpm 2600
Max. flow at n=nmax L/min 104
at n=1500rpm L/min 60
Max. power
Δp=350 bar 		at n=nmax kW 61
at n=1500rpm kW 35
Max. torque (Δp=350 bar) Nm 223
Torque (Δp=100 bar) Nm 64
Weight approx. kg 40
71
71
2200
156
107
91
62
Displacement Vg max cm³/rev 71
Max. rotation speed nmax rpm 2200
Max. flow at n=nmax L/min 156
at n=1500rpm L/min 107
Max. power
Δp=350 bar 		at n=nmax kW 91
at n=1500rpm kW 62
Max. torque (Δp=350 bar) Nm 395
Torque (Δp=100 bar) Nm 113
Weight approx. kg 54
125
125
1800
225
186
131
109
Displacement Vg max cm³/rev 125
Max. rotation speed nmax rpm 1800
Max. flow at n=nmax L/min 225
at n=1500rpm L/min 186
Max. power
Δp=350 bar 		at n=nmax kW 131
at n=1500rpm kW 109
Max. torque (Δp=350 bar) Nm 696
Torque (Δp=100 bar) Nm 199
Weight approx. kg 87
180
180
1800
324
270
189
158
Displacement Vg max cm³/rev 180
Max. rotation speed nmax rpm 1800
Max. flow at n=nmax L/min 324
at n=1500rpm L/min 270
Max. power
Δp=350 bar 		at n=nmax kW 189
at n=1500rpm kW 158
Max. torque (Δp=350 bar) Nm 1002
Torque (Δp=100 bar) Nm 286
Weight approx. kg 103
250
250
1500
375
375
219
219
Displacement Vg max cm³/rev 250
Max. rotation speed nmax rpm 1500
Max. flow at n=nmax L/min 375
at n=1500rpm L/min 375
Max. power
Δp=350 bar 		at n=nmax kW 219
at n=1500rpm kW 219
Max. torque (Δp=350 bar) Nm 1391
Torque (Δp=100 bar) Nm 398
Weight approx. kg 186
355
355
1500
532
532
310
310
Displacement Vg max cm³/rev 355
Max. rotation speed nmax rpm 1500
Max. flow at n=nmax L/min 532
at n=1500rpm L/min 532
Max. power
Δp=350 bar 		at n=nmax kW 310
at n=1500rpm kW 310
Max. torque (Δp=350 bar) Nm 1976
Torque (Δp=100 bar) Nm 564
Weight approx. kg 206
500
500
1320
600
—
385
—
Displacement Vg max cm³/rev 500
Max. rotation speed nmax rpm 1320
Max. flow at n=nmax L/min 600
at n=1500rpm L/min -
Max. power
Δp=350 bar 		at n=nmax kW 385
at n=1500rpm kW -
Max. torque (Δp=350 bar) Nm 2783
Torque (Δp=100 bar) Nm 795
Weight approx. kg 318
Size Displacement (cm³/rev) Max. speed (rpm) Max. Flow (L/min) Max. Power(kw) Δp=350 bar Details
an=nmax n=1500rpm n=nmax n=1500rpm
40 40 2600 104 60 61 35
71 71 2200 156 107 91 62
125 125 1800 225 186 131 109
180 180 1800 324 270 189 158
250 250 1500 375 375 219 219
355 355 1500 532 532 310 310
500 500 1320 600 - 385 -
Features
  • Engineered for Open-Circuit Systems Designed for applications requiring variable flow control and high efficiency.
  • Axial Piston Variable Displacement Pump Uses a swashplate mechanism for seamless displacement adjustments.
  • Flow Proportional to Speed and Displacement Ensures smooth and reliable hydraulic output for your applications.
  • Exceptional Suction Performance Optimized for continuous and stable operation in your system.
  • Compact and Lightweight Design Reduces your system’s footprint while maintaining high power output.
  • Low-Noise Operation Designed to minimize vibration and enhance efficiency in your setup.
  • Hydrostatic Balanced Shoes Improve durability and wear resistance, extending your equipment’s lifespan.
  • Fast Response Control Provides rapid system adjustments for your dynamic applications.
  • Integrated Swashplate Angle Indicator Allows for precise monitoring and adjustments tailored to your needs.
  • Control Mode DR, DP, FR, DFR, LR2, LR2G, LR2D, EM, HM, HS, HD, MA, EO, DS1
Applications
Construction Machinery
Construction Machinery
Marine and Offshore Equipment
Marine and Offshore Equipment
Mining and Quarrying Equipment
Mining and Quarrying Equipment
Metallurgical and Steelmaking Equipment
Metallurgical and Steelmaking Equipment
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