HL-A4VSG HYDRAULIC PUMPS
Variable Displacement Axial Piston Pump for Closed Circuit

Variable Displacement Axial Piston Pump for Closed Circuit

The HL-A4VSG variable displacement pump is designed for closed-loop hydraulic systems, delivering precise control and high-pressure power output for industrial equipment and construction machinery.

  • 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)
n=nmax
n=1500rpm
Max. Power(kw)
Δp=350 bar
n=nmax
n=1500rpm
Details
40
40
3700
148
60
86
35
Displacement Vgmax cm³/rev 40
Max. rotation speed nmax rpm 3700
Max. flow at n=nmax L/min 148
at n=1500rpm L/min 60
Max. power
Δp=350 bar 		at n=nmax kW 86
at n=1500rpm kW 35
Max. torque Δp=350 bar Nm 223
Torque Δp=100 bar Nm 64
Weight approx. kg 47
71
71
3200
227
107
132
62
Displacement Vgmax cm³/rev 71
Max. rotation speed nmax rpm 3200
Max. flow at n=nmax L/min 227
at n=1500rpm L/min 107
Max. power
Δp=350 bar 		at n=nmax kW 132
at n=1500rpm kW 62
Max. torque Δp=350 bar Nm 395
Torque Δp=100 bar Nm 113
Weight approx. kg 60
125
125
2600
325
186
190
109
Displacement Vgmax cm³/rev 125
Max. rotation speed nmax rpm 2600
Max. flow at n=nmax L/min 325
at n=1500rpm L/min 186
Max. power
Δp=350 bar 		at n=nmax kW 190
at n=1500rpm kW 109
Max. torque Δp=350 bar Nm 696
Torque Δp=100 bar Nm 199
Weight approx. kg 100
180
180
2400
432
270
252
158
Displacement Vgmax cm³/rev 180
Max. rotation speed nmax rpm 2400
Max. flow at n=nmax L/min 432
at n=1500rpm L/min 270
Max. power
Δp=350 bar 		at n=nmax kW 252
at n=1500rpm kW 158
Max. torque Δp=350 bar Nm 1002
Torque Δp=100 bar Nm 286
Weight approx. kg 116
250
250
2200
550
375
321
219
Displacement Vgmax cm³/rev 250
Max. rotation speed nmax rpm 2200
Max. flow at n=nmax L/min 550
at n=1500rpm L/min 375
Max. power
Δp=350 bar 		at n=nmax kW 321
at n=1500rpm kW 219
Max. torque Δp=350 bar Nm 1391
Torque Δp=100 bar Nm 398
Weight approx. kg 214
355
355
2000
710
533
414
311
Displacement Vgmax cm³/rev 355
Max. rotation speed nmax rpm 2000
Max. flow at n=nmax L/min 710
at n=1500rpm L/min 533
Max. power
Δp=350 bar 		at n=nmax kW 414
at n=1500rpm kW 311
Max. torque Δp=350 bar Nm 1976
Torque Δp=100 bar Nm 564
Weight approx. kg 237
500
500
1800
900
750
525
438
Displacement Vgmax cm³/rev 500
Max. rotation speed nmax rpm 1800
Max. flow at n=nmax L/min 900
at n=1500rpm L/min 750
Max. power
Δp=350 bar 		at n=nmax kW 525
at n=1500rpm kW 438
Max. torque Δp=350 bar Nm 2783
Torque Δp=100 bar Nm 795
Weight approx. kg 352
Size Displacement (cm³/rev) Max. speed (rpm) Max. Flow (L/min) Max. Power(kw)
Δp=350 bar
n=nmax n=1500rpm n=nmax n=1500rpm
40 40 3700 148 60 86 35
71 71 3200 227 107 132 62
125 125 2600 325 186 190 109
180 180 2400 432 270 252 158
250 250 2200 550 375 321 219
355 355 2000 710 533 414 311
500 500 1800 900 750 525 438
Features
  • Engineered for High-Performance Applications Designed for industrial and mobile equipment requiring accurate pressure and flow control.
  • Axial Piston Variable Displacement Pump Uses a swashplate mechanism for infinitely adjustable displacement.
  • Flow Proportional to Speed and Displacement Ensures smooth and consistent hydraulic output.
  • Handles High Operating Pressure Supports pressures up to 35 MPa, making it suitable for demanding conditions.
  • Exceptional Suction Performance Optimized for continuous and stable operation.
  • Compact and Lightweight Design Reduces system footprint while maintaining high power output.
  • Low-Noise Operation Designed to minimize vibration and enhance efficiency.
  • Hydrostatic Balanced Shoes Improve durability and wear resistance.
  • Fast Response Control Provides rapid system adjustments for dynamic applications.
  • Integrated Swashplate Angle Indicator Allows for precise monitoring and adjustments.
  • Control Mode DR, DP, FR, DFR, LR2, MA, HM, HS, EO, HD, DFE1
Applications
Mining and Quarrying Equipment
Mining and Quarrying Equipment
Marine and Offshore Equipment
Marine and Offshore Equipment
Metallurgical and Steelmaking Equipment
Metallurgical and Steelmaking Equipment
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