Variable Displacement Axial Piston Pump for Closed Circuit Manufacturer

Variable Displacement Axial Piston Pump for Closed Circuit

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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			71	90
Displacement	Variable pump V_gmax	cm³/rev	71	90
Displacement	Auxiliary pump (at p=20 bar)	cm³/rev	19.8	28
Rotation speed	Max. speed	rpm	3300	3050
Rotation speed	Min. speed	rpm	500	500
Flow	at n=n_max	L/min	234.3	274.5
Power	at n_max Δp=400 bar	kW	156.2	183
Torque	at n_max 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

Mixer Trucks

Agricultural Machinery

Enhance the efficiency and reliability of your closed-circuit hydraulic system with this advanced axial piston pump. Contact us today to find the right solution for your application.