Variable Displacement Axial Piston Pump for Closed Circuit

Request a Quote

Website: http://hydraulicsystem-en.com/1-1-4-variable-displacement-pump.html

The HL-A4VG variable displacement pump is designed for precision, reliability, and efficiency in closed-loop hydraulic systems. It ensures smooth control, rapid response, and high-pressure output, making it ideal for demanding applications in mobile and industrial machinery.

Displacement 40-180 cm³/rev
Nominal pressure 400 bar
Max. allowable pressure 450 bar

Technical Data

Size			40	56	71	90	125	180
Displacement (variable pump)	V_gmax	cm³/rev	40	56	71	90	125	180
Displacement (boost pump)	V_{g Sp}	cm³/rev	8.8	11.8	19.8	19.8	28.5	40
Max. rotation speed	n_max	rpm	4000	3600	3300	3000	2800	2500
Min. rotation speed	nmin	rpm	500	500	500	500	500	500
Max. flow	at n=n_max	L/min	160	201.6	234.3	270	350	450
Max. power	at n=n_max V=V_{g max} (Δp=400 bar)	kW	106.6	134.4	156.2	180	233.3	294
Max. torque	at V=V_gmax (Δp=400 bar)	Nm	254.4	356	451.5	572.4	795	1146.5
Case volume	V	L	1.1	1.5	1.5	1.5	2.2	3.2
Weight		kg	32	39	50	61	82	102

Features

Optimized for Closed-Circuit Systems Engineered for hydrostatic drive applications in mobile machinery, ensuring seamless performance under heavy loads.
Precise Flow Control Adjusts flow proportionally to pump speed and displacement for smooth operation.
Seamless Variable Adjustment Swashplate angle allows infinitely adjustable displacement control for greater precision.
Stable Flow Reversal Zero-passage swashplate transition ensures smooth directional changes without pressure spikes.
Built-in Overload Protection High-pressure relief valves protect pumps and motors from excessive loads, enhancing system safety.
Integrated Auxiliary Pump Provides boost pressure and control oil to maintain system stability.
Pressure Limiting Valve Built-in relief system prevents excessive boost pressure for optimized performance.
High-Precision, Long-Lasting Components Reinforced internal structures and premium bearings ensure extended durability.
Reliable Sealing System PARKER sealing components prevent leaks and maintain consistent performance in extreme conditions.
Control Mode HW, DA1, DA2, HD1, HD3

Applications

Construction Machinery

Mining and Quarrying Equipment

Agricultural Machinery

Enhance the performance and reliability of your hydraulic system with the HL-A4VG variable displacement pump. Contact us today to find the right solution for your application.