Variable Displacement Axial Piston Pump for Closed Circuit Manufacturer

Variable Displacement Axial Piston Pump for Closed Circuit

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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

Technical Data

Size		NG		28	55	80	107	160
Geometric displacement		V_{g max}	cm³/rev	28.1	54.8	80	107	160
Max. rotation speed	at V_{g max}	n_nom	rpm	3150	2500	2240	2150	1900
Max. rotation speed	at V_g < 0.74 × V_{g max}	n_max1	rpm	4250	3400	3000	2900	2560
Max. rotation speed		n_max2	rpm	4750	3750	3350	3200	2850
Flow	at V_{g max} and n_nom	q_v	L/min	89	137	179	230	304
Power	at V_{g max}, n_nom and Δp = 350 bar	p	kW	52	80	105	134	177
Torque	at V_{g max} and Δp = 350 bar	T	Nm	156	305	446	596	891
Rotary stiffness	V_{g max} to V_g/2	c_min	kNm/rad	5	10	16	21	36
Rotary stiffness	V_g/2 to 0 (interpolated)	c_max	kNm/rad	16	32	49	67	104
Moment of inertia for rotary group		J_GR	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

Concrete Mixer Truck

If you're looking for a pump that offers precision control, high efficiency, and long-term durability, this axial piston pump is the right fit for your hydraulic system. Contact us today to find the best configuration for your application.