Your Expert Hydraulic Power Unit Manufacturer in China

Why Target Hydraulics Can Help Your Business Increase.

Over 10 Years of Small Hydraulic Power Unit Manufacturing Experience

Target Hydraulics has over 10 years of experience in mini hydraulic power unit Engineering.&Manufacturing, We can supply you with any type of hydraulic power packs for your AC&DC hydraulic power units market.

Electric Motors hp(Kw) Rating:

AC motor hydraulic power unit from 0.5 hp to 5 hp hydraulic power unit even 10 hp hydraulic power unit.DC motor hyd power unit(HPU) from 0.15kw up to 3Kw even 4.5Kw.

Hydraulic Flow Rating from 0.3LPM to 30LPM.

Target Hydraulics manufactures compact hydraulic power units that can meet hydraulic flow rating from 0.3LPM to 30LPM based on your compact hydraulic power unit needs.

Hydraulic Pressure Rating from 20bar to 315bar.

Target Hydraulics can provide you hydraulic power unit design with different working pressure from 20bar up to 315bar based on your custom hydraulic power units request.

Standard Industrial Valve Cavity

All Target Hydraulics hydraulic block manifold designing&manufacturing with standard valve body cavity. We can also supply you valve cavity tooling if you are custom hydraulic power unit manufacturers.

Superior Quality Hydraulic Power Pack Units Supplier

All hydraulic power units and parts were designed with 3D software for your new project. Professional hydraulic power unit sales and manufacture team guarantee your hyd power unit order processing quick and superior quality.

On-Time Deliveries

Hydraulic Manifolds 3D drawing design and CNC machine for quick sample delivery.7/24 no-stop CNC machine line,3000sqm warehouse,8 assembly lines, and test benches,50+  professional staff provide your hyd power units and parts always delivered on time.

Your Hydraulic Power Unit Supplier

Hydraulic power unit manufactured and designed with our years of experience from hydraulic application market.

We also provide high performance quality hydraulic cartridge valves. Our hydraulic power units, hydraulic aluminum manifold blocks, and hydraulic valves are designed and made in China.

Our engineers create small hydraulic power units and hydraulic manifold designs with Solidworks. Our DC and AC hydraulic power pack units and hydraulic cartridge valves are used for industry hydraulics, truck hydraulics, mobile hydraulics, custom hydraulic manifolds, and many other different Hydraulics applications.

Target Hydraulics provides high quality products and good service for our clients and distributors around the world. You hit your target at Target Hydraulics.

Hydraulic Power Units

HYDRAULIC POWER UNITS FQA

What is a Hydraulic Power Unit?

Hydraulic Power Unit is one of the modernized applications of Braise Pascal hydraulic fluid power usage.

Hydraulic Power Packs, Hydraulic Pump Power Units, Hydraulic Power Pack Units, or simply HPU is the basic core component of hydraulic systems.

This device converts fluid to energy and then transmits or distributes it to different points of an enclosed system.

The energy it transmits can be in various forms; it can be forced, linear motion, or even in the form of rotary motion.

Though it has various forms, the energy that is produced is referred to as hydraulic energy.

The produced hydraulic energy is then utilized to drive hydraulic machinery.

What are the Classifications of a Hydraulic Power Unit?

The hydraulic power unit has many different classifications with :

how the hydraulic power unit working:

Double acting hydraulic power pack and Single-acting hydraulic power unit.

How the hydraulic power unit is powered:

The engine-driven hydraulic power unit,

DC hydraulic power unit and AC hydraulic power unit. All the electric hydraulic power units will complete with an electrical motor, whatever the motor is DC or AC voltage.

What size of the hydraulic power unit:

• the compact hydraulic power unit,
• the small hydraulic power unit,
• the mini hydraulic power unit,
• the micro hydraulic power unit

DC Hydraulic Power Unit

What are the Different Applications of Hydraulic Power Units?

Hydraulic power units were designed can be applied to anything that requires lift,push, and rotational applications, They are utilized in a wide variety of agricultural, material handling, industrial and mobile applications and so much more.

Such these applications include:

hydraulic elevators, car lift hydraulic pump unit,snow plow 12v dc hydraulic power unit,

scissor lift, dump trailer hydraulic system unit,forklift hydraulics, plant dump trailers, dump trucks, and even security equipment like access control.

What is the Working Principle of a Hydraulic Power Unit?

A hydraulic power unit’s primary function is to distribute hydraulic energy equally, from hydraulic pumps to Hydraulic actuators.

Hydraulic power units should be able to supply the needed power to drive machinery in every movement or direction. All hydraulic power unit working principles follow Pascal’s pressure working mechanism.

What are the Basic Hydraulic Power Unit Components?

A hydraulic power unit is an assembly of various interconnected components.

Basic components of a hydraulic power pack unit include a diesel or electric powered motors, hydraulic reservoirs, couplings and fittings, suction pipes and filters, hydraulic valves, and hydraulic gear pumps, as well as hydraulic block manifolds.

It can even have electrical control systems such as button remotes pendants and cables.

Hydraulic Components may vary depending on the type of the hydraulic power unit application or on what is designed for.

For example, a small hydraulic power unit has fewer hydraulic components in comparison to hydraulic power units that are utilized in the big heavy lifting industries applications.

What Kinds of Different Valves are Used in a Hydraulic Power Unit?

Different Types of Hydraulic Valves

A hydraulic power unit has different types of valves in its system. These valves are essential for controlling the hydraulic fluid flow and pressure within a hydraulic power pack hydraulic system.

These valves are responsible for regulating, cutting, providing, and preventing the flow of hydraulic fluid.

The following are the types of valves that are mostly used in a hydraulic power supply system. Each type of valves in the list has different functions, depending on the design and application requirement.

 modular valve

Stacked Valves – Stacked valves are responsible for making the flow of hydraulic transmission changing hydraulic pressure. These valves are mounting attached to the hydraulic central manifolds channel together with the stacked block manifolds.

Cartridge Valves – Cartridge Valves are valves that are used for checking and controlling the direction and flow of pressure in a hydraulic system. 

Check Valves – Check valves keep pressure from the hydraulic pump to the hydraulic cylinder and hold pressure for the single acting hydraulic power unit. These check valves designed with different cracking pressure.

Relief Valves – Relief valves relieve over-pressurization of fluid in hydraulic power units system to protect other hydraulic components.

throttle valve

Throttle Valves – Throttle valves also called flow control valve, they are used to open, close,start stop, or regulate the hydraulic oil fluid flow by a dynamic pump.

Directional Control Hydraulic Valves –  are used to retract or extend double-acting hydraulic cylinders or hydraulic motors. These directional valves provide a directional path from pump to cylinders (hydraulic motors) and a return path from cylinders (hydraulic motors) to the hydraulic fluid oil tank.

How Important is Hydraulic Oil Tank or Reservoir in a Hydraulic Power Unit?

A hydraulic reservoir or tank stores the hydraulic fluid for a hydraulic system. The tank is also the key to transfer heat for this hydraulic power unit system.

Without the tank, air moisture will cause problems in your hyd power unit. The heat in the hydraulic tank releases rises the moisture above the hydraulic oil fluid making its way out of the tank through the hydraulic tank air breather cap.

The size and the shape of the tank depending on your hydraulic power unit design or the type of your hydraulic system applications.

Shapes can also different, it can be square, cylindrical, or rectangular depending on the design.

The standard size of a hydraulic tank should be around 2.5-3.0  times pumps of fluid gallons per minute.

The typical materials used in hydraulic tanks come from steel, stainless steel, and aluminum. the mini hydraulic power unit also used plastic materials as their hydraulic tank reservoir.

hydraulic power unit steel tanks

How Important is the Center Hydraulic Manifold Block in a Small Hydraulic Power Unit?

The center hydraulic manifold block is the core component of the small hydraulic power unit system.

With the center manifold, you can assemble motors, pumps, hydraulic valves to complete a hydraulic power unit. There will be hydraulic fluid pressure oil go through the central manifold if this is a small hydraulic power unit design.

center hydraulic manifold block

What is a Hydraulic Pump?

A hydraulic pump’s purpose is to provide the needed flow of hydraulic energy.

What are the Major Types of Hydraulic Pumps?

There are three major types of hydraulic pumps:

• Gear Pump– Intervals of gears are used to pump fluids by motion. In each revolution, it pumps a fixed amount of high viscosity fluids.
• Piston Pump– Piston pumps are displacement pumps that create pressures and discharge fluid with little effort. The pressure this pump creates pressurized the fluid in the hydraulic system.
• Vane Pump– Vane pumps have rectangular-shaped vanes inlets. The back and forth rotation of these vanes moves pressure against the outer face of the ring, making the vane pump work.

Aside from these three, some machines have clutch pumps, dry valve pumps, or dump pumps.

hydraulic gear pump

What is the Application of a Hydraulic Gear Pump?

Hydraulic Gear pumps are mostly used for pumping high viscosity fluids.

The features of gear pumps are simple and compact. Because of having limited numbers of motion components, it cannot compete with reciprocating or centrifugal pumps when it comes to generating pressure and flow. However, it generates higher pressure and flow rate compared to vane pumps.

You can customize gear pumps to control strong liquids.

The common materials used in making gear pumps include iron, alloy, aluminum, and composites. The type of materials is essential in dealing with corrosive liquids.

Having a priming characteristic means gear pumps need lubrication and should not be dry. Close tolerance of gears and casting can wear the pump over time.

Small and compact hydraulic power unit normally work with a hydraulic gear pump, so does mini and micro hydraulic power unit.

What are the Basic Designs of Hydraulic Gear Pumps?

Basic designs of gear pumps are divided into two: external gear pumps and internal gear pumps.

External and internal gear pumps

An external gear pump has two uniform interlocking gears which are usually powered by motors.

Because the gears are interlocked with each other, no fluid can return in the center.

An external gear pump can sustain high-pressure and flow rates, due to its more rigid shaft support and precision.

The precise specifications between the gears and casing enable the pump to develop suction at the inlet, this will prevent fluid leakage from the discharge place.

An internal gear pump still has two interlocking gears. However, in comparison to the external pump’s identical gears, the gears of internal pumps have different sizes. A smaller gear is mounted at the center of the larger gear.

This is specifically designed to interlock with the gear teeth attached at one point. And a pinion and bushing are engaged at the pump’s casing holding the idler gear in its place.

Then there will be some seals between ports.

What are the Main Different Types of Piston Pumps?

• Axial Pumps – Axial pumps work by means of pushing fluid flow movement along its axis.
• Inline Pumps – This pump has less circulation capability can generate a sufficient supply of pressure.
• Bent Axis Pumps– The design of bent axis pumps enables them to spin faster and can quickly turn at angles.
• Radial Piston Pumps -This pump distributes energy by pushing the flow of fluid outward ，it can create high-pressure into the hydraulic system.
• Plunger Pumps -It comes with a cylindrical shape pump and has a plunger. It is implemented for pressure washing and reverses osmosis.

What is the Application of a Vane Pump?

Vane pumps are relatively fragile compare to piston and gear pumps.

It is commonly used when low-pressure and low noise is needed

What are the Different Types of Vane Pumps?

There are only two available types of hydraulic vane pumps. This includes fixed displacement pumps and variable displacement pumps.

Fixed-displacement pumps were designed to have two chambers.

The amount of GPM in a fixed-displacement pump can only be varied if the drive speed is change.

The two to balanced chambers are responsible for two pumping cycles in every revolution.

In contrast with fixed-displacement pumps which have two chambers, a variable displacement pump only has a single chamber. The movement of the outer ring to the inner enables the pump to work.

As both the outer and inner ring rotates in the center, fluid flow will be halted. But if the outer ring is moved away from the center, vanes placement changes as the fluids are drawn from the suction line and out to the supply line.

What is the difference between a Hydraulic Motor and a Hydraulic Pump?

In structural design, hydraulic pumps and hydraulic motors are similar.

In applications these two and be reversible. For instance, if it’s powered by a motor and pressure flow is output, it is a hydraulic pump; if the flow of oil pressure is input and the torque energy is output, it’s a hydraulic motor.

What is a Hydraulic Motor?

hydraulic motor

Hydraulic motors are mechanical rotary actuators.

Hydraulic motors supply the force of motion to shift an external load.

The hydraulic motors convert hydraulic energy into mechanical torque power.

The motor works together with the hydraulic pump and the counterpart of the hydraulic cylinder.

What is the Difference Between AC and DC motors?

Both A.C.(Alternating Current) and D.C.(Direct Current) motors have the same application; to convert electrical energy into mechanical energy.

Having the same purpose doesn’t mean they are not entirely different. They are built, controlled, and powered in different ways.

Another difference between the two is the type of electrical current each motor converts into mechanical energy.

For example, A.C. motors used altering current, while D.C. motors used direct current.DC motors are efficient on speed control and output range. The speed of DC motors is controlled in the means of varying electrical winding.

AC motors give higher power output compared to D.C. motors. The speed of A.C. motors is controlled by using frequency drive controls.D.C. motors configurations are always in single-phase. D.C motors have brushes as well as a commutator. That is why it is hard to maintain and could affect the life expectancy of D.C. motors.

In contrast, an A.C. motor can be in single or three-phase compared to D.C. configuration. The induction of an A.C. motor does not contain brushes. A.C motors are rugged and will obviously have a longer life expectancy.

What is a Hydraulic Cylinder?

Hydraulic cylinders are linear actuators. With hydraulic cylinders, unidirectional force and movements are applied in many industrial applications.

Hydraulic cylinders have piston rods that help transmit pressurized hydraulic power within the cylinder shell.

What is a Single-Acting Hydraulic Cylinder?

This type of cylinder has only one end port that is utilized to supply and vent compressed air. Therefore, hydraulic fluid in a single-acting hydraulic cylinder works only on one side of the piston.

Every time it works it retracts to its original position with the use of mechanical spring force, compressed air, and even gravity load.

A single-acting hydraulic power unit works with single acting hydraulic cylinder.

What is a Double-Acting Hydraulic Cylinder?

Both sides of a double-acting hydraulic have fluids.

This cylinder distributes hydraulic power in two directions, which allows retraction and extension on both sides.

hydraulic cylinder

Double-acting cylinders do not extra power to perform the work. The pressure inside the compressive chamber of the cylinder has enough force to make the piston return to its original position.

The double-acting hydraulic cylinder works with Double acting hydraulic power unit.

What is Hydraulic Oil Fluid?

Hydraulic fluid oil can either be synthetic or mineral-based liquid. Common variations of mineral-based hydraulic fluid are petroleum-based and water-based fluids. Some fluids consist of plain water, water-oil emulsions, and even salt solutions.

Hydraulic oil fluid is the ingredient used the hydraulic systems to transfer power in hydraulic machinery and equipment. Hydraulic liquids are additionally in charge of lubrication, warmth transfer, and contamination control within the system.

What is a Hydraulic Filter?

Hydraulic filters remove contaminants from hydraulic oil or other types of hydraulic fluid.

If the contaminants are not removed or filtered, components of your hydraulic system can get damage.

Its principle is about the principle of off-line filters. The hydraulic fluid oil will be filtered by the hydraulic filter. Then after its filtration, it will be pumped out through the outlet port or back to the tank. Hydraulic filters are placed either on a suction port of the pump or tank port into the reservoir.

 hydraulic filter

Does Hydraulic System Need Electricity?

Electrical power is usually not needed in order to operate a hydraulic system. The fundamental rule of a hydraulic system is the use of liquid in its operations.

Do I need to be a Professional to Install a Hydraulic Power Unit?

Hydraulic power units have some technical selective components that need precise consideration during design. This is crucial to ensure that the unit will work properly after its setup.

However, credentials or certification are not a must when setting up a hydraulic power unit. Even so, you must have the proper knowledge and ability when dealing with it so that the components will be installed precisely. If it is your first time, collaborate with an experienced installer to accomplish your desired result.

Examination of the hydraulic system after installing should be taken into account. This is important to ensure hyd power unit system working properly.

What is the Installation Process of a Hydraulic Power Pack Unit?

Inspect the dimensions and the mountings of your hydraulic power pack unit. This is essential for knowing the right installation space.

You must carefully read the installation instructions before installing the valves. If valves are not properly installed, it will not function properly.

Make sure there are no debris, chips, or any foreign objects in the valve and hydraulic block manifolds. The O-rings should also be check for cleaning and quality station.To avoid damage during installation, lubricate the O-rings on the cartridge valve.

Failing to put oil in the valves will make the O-rings spin on the valve assembly. If this happens, O-ring could potentially be slice, tear, or cut.

It’s advisable to use hydraulic oil for lubrication. Grease and motor oil should not be applied for it will mix with the hydraulic fluid and gum up the valves.

After inserting the valves into the valve cavities, be sure to tighten them. A torque wrench will be used when too tighten the valve cartridge.

Be careful, do not over-torque valves for it could cause distortion in the valve assembly. If the valves are distorted, it will not properly close or open. This situation could lead to contamination issues.

How does a Hydraulic Push Button Pendant Work?

hydraulic power pack unit’s push-button pendant

Hydraulic push-button remotes let you operate hydraulic power units.

Some hydraulic power units remotes are wireless remote, enabling you to control the start and the stop of your hydraulic power units without cables or switches. Remote buttons are controlling the hydraulic cylinder in and out motion.

How to Install a Double-Acting Hydraulic Power Pack Unit(DC 12 voltage)?

1. Storing the remote pendant with cable.
2. Released or detached the two-button pendant from the hydraulic power pack unit QDCS(quick dis-connectors ).
3. Install the threaded hydraulic fittings into ports.
4. With the use of two mounting bolts mounts the hydraulic power pack unit with a mounting bracket holder.
5. Follow these sequences. Connect hydraulic power unit and cylinder with hydraulic hoses. Connect both A and B oil ports with cylinder A and B ports.First, take one side of the hose, connect the hydraulic hose one side to the base of the hydraulic cylinder. Then the other side of the hydraulic hose must be connected to the rod end of the hydraulic cylinder.
6. Now, remove the breather cap of the reservoir and fill it with hydraulic oil in. Stop when about 1 inch from the top.
7. Connect the DC Motor’s Ground cable and the Ground terminal’s battery.
8. To start the solenoid, the positive must be connected to the battery.
9. In this procedure, a wrench must be utilized to hold the bottom nut in its place. Also, use the wrench to torque the upper nut and to fasten battery connections.
10. Now you can reattach the two-button remote pendant at the QDCs.
11. While testing or operating the hydraulic power pack unit, keep an eye on the fluid level of the tank. The level of the hydraulic fluid should not have lowered down half full during the trial start-up. Do not let the suction filter out of hydraulic fluid.A fully extended cylinder’s tank should be half full. If you will let the hydraulic fluid drop below half full of its initial level, air might enter into your hydraulic system. This can lead to aeration of the fluid and it could overflow the reservoir tank.
12. Depending on what is needed, you can refill the tank to its full line level.
13. Place the breather cap back.

power unit design

What are the Advantages of Hydraulic Power Units?

Hydraulic power units can generate a large amount of energy. It can supply continuous revolution and pressure regardless of speed adjustments.

Hydraulic pump power unit offers you the same power output, compact size as other power sourcing.

Also, hydraulic power units can be easily managed, due to the truth that start-up quickly as well as having simple and standard controllers.

Hydraulic powers are conventional, less maintenance, and have fewer relocating components.

What Common Problems a  small Hydraulic Power Unit Have?

• Abnormal Liquid Temperatures
• Poor Performance
• System Over-Operation
• Unusual OperatingNoises

How to Troubleshoot a Hydraulic Power Pack Unit?

Troubleshooting unstable and not working hydraulic oil inlet system

If this is the problem, the possible causes are the following:

1. Hydraulic reservoir is short of oil; add the required level of oil into your hydraulic unit’s tank.
2. The used oil has a high viscosity level; change it to the oil that has the correct
3. There might be a blockage in the suction filter; clean or replace the filter.
4. There might be a blockage in the solenoid valve; change the oil and clean the solenoid valve.

Troubleshooting unstable drops in the hydraulic system

The following are the best solutions:

1. Cleaning the solenoid valve and changing the hydraulic oil
2. Also, check the other valves and then clean them.

Troubleshooting the insufficient supply of oil on a working motor

The following are the best solutions:

1. Check the remote control.
2. Check the solenoid remote control and starter rely on the motor.

Troubleshooting a power unit that’s not going down

1. Check the valve solenoid.
2. A counter-clockwise manual overdrive will go down quickly. This should be closed to start the power-up.
3. If the solenoid valve in the manifold block part does not have a manual overdrive, simply clean it.

AC hydraulic power unit

How to Maintain a Hydraulic Power Unit?

General maintenance for hydraulic power unit includes lubricating electric motors, cleaning or changing hydraulic oil fluid, and cleaning of the suction strainers.

The oil of the tank should also be regulated. Always check if the oil level of the tank to avoid an existential drop. Changing oil is also necessary, to keep your hydraulic power unit in good performance.

How to Choose the Proper Hydraulic Power Unit?

There several things you need to consider before choosing the correct hydraulic power unit for your application.

First, you’ll need to know the level of force needed for your application.

Then what significant size of a hydraulic power unit is suitable for your job. Also, include the liquid flow rate when deciding what size of hydraulic power pack unit you want to get.

The number of outlets and inlets of the should also be taken into account. This is certainly important you can utilize the amount of power you going to use. Then come with hydraulic oil port question, BSPP, SAE, and Metric units are all available from Target Hydraulics Power Units.