HPV Series Closed Circuit Axial Piston Pump

Closed Circuit Axial Piston Pump, HPV Series

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Hydraulic Pump
Closed Circuit Axial Piston Pump, HPV Series

HPV Series

Closed Circuit Axial Piston Pump

Variable displacement hydraulic pump for closed loop operation

Our Highland HPV series closed circuit axial piston pumps are built to meet your toughest demands. As the next generation, developed from the trusted PV Series, the HPV Series offers upgraded performance across key areas to deliver the power, reliability, and efficiency your operations need.

Key Parameters

Displacement (ml/r): 30, 50, 70, 90, 110, 130

Rated pressure (Mpa): 35

Max. pressure (Mpa): 42

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Features

Here’s what makes the HPV Series stand out:

Optimized Refill System: Unlike the traditional PV Series, which uses an external gear pump for refilling, the HPV Series features a cycloidal internal gear pump. This design ensures each pump’s refill system operates independently in multi-pump setups, boosting stability and reliability across your entire system.
Enhanced Design:

We’ve replaced the ball-joint helical spring with a disc spring, making the pump’s overall diameter smaller. This means you get more compact pumps with the same displacement, saving valuable installation space.

Our upgraded high-pressure oil seals make maintenance easier, reduce the risk of hydraulic leaks, and enhance cleanliness and durability for a longer-lasting system.
Cost-Effective Solution: Through refined design and efficient manufacturing, we’ve kept production costs down, allowing us to offer you a high-performance pump that’s also budget-friendly.

Typical Applications

With models like the HPV30, HPV50, HPV70, HPV90, HPV110, and HPV130, the HPV Series covers a range of flow requirements for various applications. Whether you’re in agriculture, construction, road-building, mining, or industrial sectors, these pumps are engineered to provide the dependable hydraulic power you need.

Interested in learning more? Contact Us today to discover how the HPV Series can drive your projects forward.

Technical Data

Model			HPV30	HPV50	HPV70	HPV90	HPV110	HPV130
Displacement	Displacement range		30-33.3	50-51.6	70-69.8	90-90.5	110-110.8	130
Displacement	Max. displacement	ml/r	33.3	51.6	69.8	90.5	110.8	130
Rotation Speed	Max. continuous working speed (full load)	r/min	3500	3500	3200	3000	2900	2700
	Rated speed	r/min	2500
	Min. continuous working speed	r/min	500
Pressure	Rated pressure	Mpa	35
	Max. pressure (instantaneous)	Mpa	42
	Continuous working pressure (△P)	Mpa	30
	Max. permissible housing pressure (absolute)	Mpa	Constant 0.25 Peak value 0.5
Torque	Continuous output torque (under continuous working pressure)	Nm	162.3	252.3	342.6	432.9	535.3	632.4
Torque	Max. output torque	Nm	227	353	480	606	749	885
Power	Continuous power	kW	41	72	98	128	137	162
Power	Max. power	kW	57	87	105	138	159	188
Temperature	Permissible housing temperature	℃	80
Temperature	Max. working temperature of oil tank	℃	70
Angle	Max. swash plate angle	°	±18°
Weight	Hydraulic pump weight (without hydraulic oil)	kg	45	46	63	64	87	87.5

Download Technical Drawings (PDF)

Closed Circuit Axial Piston Pump HPV-30(50)
998KB

DownLoad
Closed Circuit Axial Piston Pump HPV-70(90)
1.17M

DownLoad
Closed Circuit Axial Piston Pump HPV-110(130)
1.45M

DownLoad

Related Hydraulic Components

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Frequently Asked Questions

How does a hydraulic pump work?

A hydraulic pump works by using mechanical energy to pressurize fluid within a closed system. The pressurized fluid is then used to power machinery like excavators, presses, and lifts.

What types of hydraulic piston pumps are available?

There are two main types of hydraulic piston pumps: axial and radial. Both types can be fixed or variable displacement. A fixed displacement pump moves a set amount of fluid each cycle, while a variable displacement pump can adjust the amount of fluid moved per cycle.

How do you choose between an axial and radial piston pump?

Choosing the right hydraulic pump depends on an assessment of your application. Consider the required pressure, flow rate, speed, horsepower, and the type of fluid used. Radial piston pumps can handle a variety of fluids, including mineral oil and water-glycol hydraulic fluids, while axial piston pumps are preferred for high-pressure applications.

What are the characteristics of an axial piston pump?

The pistons in an axial piston pump are mounted axially, resulting in a compact structure, smaller radial dimensions, and low rotational inertia.
These pumps have high volumetric efficiency and can operate at high speeds and pressures, making them ideal for high-pressure systems.
The flow rate and oil intake/output direction can be controlled by adjusting the angle and direction of the swash plate.
Swash plate designs offer better automatic fluid intake capabilities than bent-axis designs.
Axial pumps are generally larger in axial dimensions, with greater axial forces and a more complex structure.

Why are piston pumps widely used?

Compared to gear pumps and vane pumps, piston pumps offer distinct advantages:

High operating pressure, with ratings typically between 20-40 MPa and up to 1000 MPa.
Easy to vary displacement by changing the stroke or rotation direction, allowing for single or bi-directional flow control.
Wide speed range due to design flexibility, with options for different piston diameters or quantities to achieve various flow rates.
High power transmission capability.

Overall, piston pumps stand out for their high pressure, compact structure, efficiency, and ease of flow adjustment, making them widely used in high-pressure, high-flow applications such as hydraulic presses, construction machinery, and marine equipment.

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