Hydraulic Piston Pump, Model HL-A4VTG
(71/90cm³/rev variable displacement axial piston pump for closed circuit)
The HL-A4VTG variable displacement pump is designed for high efficiency, precise control, and powerful pressure output in closed-loop hydraulic systems. It is ideal for applications requiring dynamic response and high-load operation in construction and industrial equipment.
- Displacement 71/90 cm³/rev
- Nominal pressure 400 bar
- Max. allowable pressure 450 bar
Technical Data
| Size | ||||
| Displacement | Variable pump Vgmax | cm³/rev | 71 | 90 |
| Auxiliary pump (at p=20 bar) | cm³/rev | 19.8 | 28 | |
| Rotation speed | Max. speed | rpm | 3300 | 3050 |
| Min. speed | rpm | 500 | 500 | |
| Flow | at n=nmax | L/min | 234.3 | 274.5 |
| Power | at nmax Δp=400 bar | kW | 156.2 | 183 |
| Torque | at nmax Δp=400 bar | Nm | 451.5 | 572.4 |
| Weight | kg | 48 | 50 | |
Features
- Engineered for Mobile Equipment Designed specifically for hydrostatic transmissions in heavy-duty machinery.
- Axial Piston Variable Displacement Pump Uses a swashplate mechanism for precise flow control.
- Flow Proportional to Speed and Displacement Delivers smooth and stable hydraulic output.
- Infinitely Adjustable Displacement Swashplate angle allows seamless variable adjustment.
- Smooth Flow Reversal Transition through zero is steady, preventing pressure spikes.
- High-Pressure Protection Dual relief valves safeguard hydraulic components from overload.
- Integrated Auxiliary Pump Provides boost pressure and control oil to maintain system stability.
- Boost Pressure Limiting Valve Built-in relief valve prevents excessive boost pressure.
- High-Precision Bearings Designed for extended service life under demanding conditions.
- Reliable Sealing System PARKER sealing components ensure durability and prevent leakage.
- Control Mode HW, EP
Applications
