HL-A7V HYDRAULIC PUMPS
Variable Displacement Axial Piston Pump for Closed Circuit

Variable Displacement Axial Piston Pump for Closed Circuit

The HL-A7V variable displacement pump is built to handle high-pressure, heavy-load, and high-dynamic response applications in closed-loop hydraulic systems. Whether you're optimizing your industrial equipment or improving the efficiency of your construction machinery, this pump delivers the reliable performance you need.

  • Displacement 20-500 cm³/rev
  • Nominal pressure 350 bar
  • Max. allowable pressure 400 bar
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Technical Data
Size NG 28 55 80 107 160
Geometric displacement Vg max cm³/rev 28.1 54.8 80 107 160
Max. rotation speed at Vg max nnom rpm 3150 2500 2240 2150 1900
at Vg < 0.74 × Vg max nmax1 rpm 4250 3400 3000 2900 2560
Max. rotation speed nmax2 rpm 4750 3750 3350 3200 2850
Flow at Vg max and nnom qv L/min 89 137 179 230 304
Power at Vg max, nnom and Δp = 350 bar p kW 52 80 105 134 177
Torque at Vg max and Δp = 350 bar T Nm 156 305 446 596 891
Rotary stiffness Vg max to Vg/2 cmin kNm/rad 5 10 16 21 36
Vg/2 to 0 (interpolated) cmax kNm/rad 16 32 49 67 104
Moment of inertia for rotary group JGR kgm² 0.0042 0.0042 0.008 0.0127 0.0253
Max. angular acceleration α rad/s² 35900 31600 24200 19200 15300
Case volume V L 0.5 0.75 1.2 1.5 2.4
Weight (approx.) m kg 17 25 40 49 71
Features
  • Proportional Flow Control Automatically adjusts flow based on drive speed and displacement, keeping your system running efficiently.
  • Flexible Control Options A variety of control modes allow you to fine-tune your hydraulic system for optimal performance.
  • Fluid Compatibility Designed to operate with both mineral oil and fire-resistant hydraulic fluids, giving you greater versatility.
  • High-Performance Rotating Assembly Features advanced rotary components and spherical control plates that provide automatic centering, ensuring smooth operation at all speeds.
  • Enhanced Durability Upgraded internal components extend service life, reducing maintenance costs and downtime.
  • Radial Load Support Built to handle radial forces, adding strength and reliability to your system.
  • Quiet and Efficient Engineered for low-noise operation, helping you maintain a more productive and comfortable work environment.
  • Control Mode LV, DR, EP, HD, MA, SC
Applications
Construction Machinery
Construction Machinery
Concrete Mixer Truck
Concrete Mixer Truck
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