HYDRAULIC PUMPS
Hydraulic Piston Pump, Model HL-A4VSG

Hydraulic Piston Pump, Model HL-A4VSG

(40-500cm³/rev 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 40 - 180)
Size 40 71 125 180
Displacement Vgmax cm³/rev 40 71 125 180
Max. rotation speed nmax rpm 3700 3200 2600 2400
Max. flow at n=nmax L/min 148 227 325 432
at n=1500rpm L/min 60 107 186 270
Max. power Δp=350 bar at n=nmax kW 86 132 190 252
at n=1500rpm kW 35 62 109 158
Max. torque Δp=350 bar Nm 223 395 696 1002
Torque Δp=100 bar Nm 64 113 199 286
Weight approx. kg 47 60 100 116
Technical Data (Size 250 - 500)
Size 250 355 500
Displacement Vgmax cm³/rev 250 355 500
Max. rotation speed nmax rpm 2200 2000 1800
Max. flow at n=nmax L/min 550 710 900
at n=1500rpm L/min 375 533 750
Max. power Δp=350 bar at n=nmax kW 321 414 525
at n=1500rpm kW 219 311 438
Max. torque Δp=350 bar Nm 1391 1976 2783
Torque Δp=100 bar Nm 398 564 795
Weight approx. kg 214 237 352
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