single vs double acting hydraulic pump pricelist

When deciding to purchase telescopic hydraulic cylinders, buyers are often tasked with choosing between single-acting and double-acting hydraulic cylinders. Learn what differentiates the two telescopic cylinder types to see which cylinder is best for your high-power hydraulic needs.

Offering a simple cylinder design with easy maintenance, single-acting hydraulic cylinders extend by relying on pressure from one side of the piston. The cylinders retract via gravity or weight of the load.

Double-acting cylinders provide more versatility than single-acting cylinders. Single-acting hydraulic cylinders have fluid pressure applied on one side of the piston, whereas double-acting cylinders have hydraulic fluid applied to both sides of the piston.

Know what you need? Check out our replacement telescopic hydraulic cylinders. We stock a wide selection of cylinders, well-suited for a variety of mobile equipment types and functions. We also manufacture custom telescopic cylinders built to spec.

Hydraulic cylinders provide the unidirectional force required to power your industrial equipment for heavy lifting. Telescopic hydraulic cylinders, which are ideal for dump trailers and platform truck trailers, give the extended stroke lengths required for a range of versatile purposes. When purchasing telescopic hydraulic cylinders, consumers are frequently faced with the decision between single-acting and double-acting hydraulic cylinders. Learn what distinguishes the two types of telescopic cylinders to determine which cylinder is appropriate for your high-power hydraulic requirements.

The hydraulic cylinder is the industrial world’s workhorse. Learn about the benefits and drawbacks of single and double-acting hydraulic cylinders. The function of your cylinder decides whether you should choose a single-acting or double-acting hydraulic cylinder.

Single-acting cylinders generate force exclusively in one direction, whether it is a push or pull action. These are also referred to as “plunger” cylinders. They are utilized in lifting operations where hydraulic pump pressure stretches the hydraulic cylinder and a mass or spring retracts it. Single-acting cylinders contain only one port through which the hydraulic pump’s pressurized oil passes. This causes the piston to extend in one direction, compressing the piston’s spring. After releasing the air via the cylinder port where it entered, the spring or associated mass will retract the piston rod.

Single-acting cylinders are classified into two types: push and pull cylinders. The push-type, as the name implies, will allow the air entering to push the piston out of the cylinder. The pull-type hydraulic cylinder allows the oil entering the cylinder to pull the piston inside the cylinder. For one-way linear movement, single-acting cylinders are ideal. They are commonly seen in hydraulic jacks and forklifts.

The lower manufacture, installation, and repair costs of single-acting hydraulic cylinders are an advantage. With only one port to operate instead of two, both piping and valve costs are significantly reduced.

The spring mechanism in single-action cylinder interiors necessitates venting, which provides the unit with an outlet to the outside world. Particles, on the other hand, can enter the cylinder and create potential malfunctions or a slow loss in performance if not adequately monitored.

Single-acting hydraulic cylinders are ideal for use with smaller equipment due to their single port and compact structure. Most of the time, if a smaller equipment design allows for ports, fluid transmission, and venting, then this cylinder will be extremely suitable.

Pressure flows from two ports in double-acting hydraulic cylinders. The “advance” hydraulic hose fitting connects to one of the ports. The pump’s hydraulic power forces the cylinder to extend via the first port. The “retract” hydraulic hose fitting is connected to the second port. Hydraulic power is used to extend and retract the cylinder in a double-acting hydraulic cylinder. In contrast to the single-acting cylinder, which produces force in only one direction, force is generated in both directions. As a result, the cylinder may both push and pull.

The piston rod moves due to the push and pulls forces created by the pressurized fluid that alternates between both sides of the piston. These hydraulic cylinders have more control over their movement in the application where they are installed. Using 2-, 3-, or 4-way position valves, different levels of movement can be produced. Double-acting hydraulic cylinders are utilized in mobile applications such as a TLB’s boom or to control the steering of an excavator.

Though this hydraulic cylinder is not appropriate for small places, double-acting hydraulics are extremely versatile. Two ports provide hydraulic power in both directions and are readily operated with a push-and-pull motion. As a result, they are the most popular hydraulic cylinder.

Unlike single-acting variants, double-acting cylinders are sealed from the outside world. As a consequence, you will not require repairs as a result of particles invading inside pipes and valves.

Precision work that needs hydraulic pistons to stop at specific lengths regularly can stretch and deform the hydraulics over time. However, double-acting hydraulic cylinders are constructed with exact, very precise dual ports, enhancing the product’s longevity.

The choice between a double-acting and a single-acting cylinder is frequently a matter of control. How precisely do you need to be while exerting force in your hydraulic system? A single-acting cylinder may be sufficient if you need to produce a large force to move a load in a single direction, such as in heavy lifting applications. However, if you need to direct a load in two directions or have more control over the cylinder’s movements, a double-acting cylinder will provide you with more control.

•“Assemble to Order” System: There are times when a custom pump is required. Power Team’s “Assemble to Order” system allows you to choose from a wide range of pre-engineered, off-the shelf components to build a customized pump to fit specific requirements. By selecting standard components you get a “customized” pump without “customized” prices. All pumps come fully assembled, add oil and ready for work.

From inflatable jacks, hydraulic pumps, cylinders and valves to clamping components and hydraulic accessories, Power Team brand high-force tools and equipment are used wherever strong, concentrated force is required ― on construction sites, in power plants, on rail lines, in shipyards, in mining operations and more.

Located in the United States in Rockford, Illinois, the Power Team brand is marketed by SPX FLOW Inc. in 155 countries. Global sales and manufacturing offices are located in the United Kingdom; the Netherlands; Shanghai and Suzhou, China; and Singapore. The Power Team brand is sold through a worldwide network of stocking industrial distributors. Service is available throughout the world at authorized Power Team Hydraulic Service Centers.

Hydraulic cylinders are an essential component in many industries, including most of Australia’s critical sectors. Hydraulic cylinders and rams all provide the power a hydraulic system needs to function, but within the category of ‘hydraulic cylinders’, there are a few key types to understand.

The major way of dividing hydraulic cylinders is between ‘single acting cylinders’ and ‘double acting cylinders’. While fairly similar in function, there are differences between single and double acting hydraulic cylinders, meaning they aren’t interchangeable.

The main difference between single and double acting hydraulic cylinders is that a double acting hydraulic cylinder uses hydraulic pressure to move a piston in two directions, while a single acting hydraulic cylinder relies on a spring or gravity to return to its original position.

To help outline the differences in these fairly similar hydraulic systems, we have produced this handy guide. This article outlines the key differences between single and double acting hydraulic cylinders, and when is the best time to use each one.

Whether you’re choosing the right hydraulics components or need to repair hydraulic cylinders, you’ll need to know what type of cylinder or ram you’re working with. That’s why we’ve also covered how to identify single vs double acting cylinders and whether you can convert them.

A single acting hydraulic cylinder is a hydraulic cylinder in which the fluid acts only on one side of the piston. It relies on the springs, gravity, load, other cylinders, or separate reservoirs to push the piston back into the opposite direction.

The fluid used a type of oil (usually mineral oil), which allows the fluid to push a load without being compressed back down by the weight. This type of hydraulic cylinder is best for straightforward applications, where the goal is to have something move in one direction.

Push Type Hydraulic Cylinder– Fluid enters to push the piston out of the cylinder. This is also referred to as a hydraulic cylinder with a ‘sprung in’ position, where the piston is fully retracted at rest.

Pull Type Hydraulic Cylinder– Fluid enters to pull the piston inside the cylinder. This is also referred to as a hydraulic cylinder with a ‘sprung out’ position, where the piston rod is fully extended at rest.

In a single acting hydraulic cylinder, a plunger extends when the cylinder is pumped full of pressurised fluid. When it is retracted, the plunger can retract using a return spring, by the load or gravity.

Single acting hydraulic cylinders have only one port, where pressurised fluid enters. These are fitted with either a spring, or a load. When the fluid is compressed, it enters through the single port which forces the piston to extend in one direction, consequently compressing the spring. The spring then retracts the piston back into its previous position after releasing the fluid from through the same port it originally flowed from.

The typical applications of single acting hydraulic cylinders are simple lifting jobs, light industrial and commercial applications, and any other application where fast and consistent retraction is not essential.

Position And Line Up Objects – Through this application, a workpiece or product is either pulled or pushed into place, or into a specific machine such as a conveyor belt, before the spring acts and prepares the hydraulic cylinder for the next workpiece.

Punch Or Mark Objects– In this application, thrust from a single acting hydraulic cylinder is used to either punch or mark an object. The spring then retracts the punch, ready for the next object.

Keep in mind that double acting hydraulic cylinders are able to do all of the above, albeit without the cost savings of a single acting hydraulic cylinder. When it comes to hydraulic cylinder parts, single-acting cylinders are simpler and therefore cheaper to purchase.

Lower cost– The initial cost of single acting hydraulic cylinders is much lower than double acting ones. This makes it ideal for situations where a double acting hydraulic cylinder may be too much, and a single acting hydraulic cylinder will work fine. In addition, its single port and small housing leads to reduced valve and hose cost compared to double acting cylinders.

Easier maintenance – Since force is only applied to one direction, there are fewer areas or segments which have to be maintained. Single acting hydraulic cylinders are easier to maintain and repair, especially if you know how to maintain hydraulic cylinders.

Safety benefits– Single-acting hydraulic cylinders have a specific rest state, which can be easily identified in the event of a power outage. Knowing the cylinder’s resting state will prevent surprise and injury once power is restored, if the cylinder is halfway through an operating cycle.

International Standards –Compared to double acting hydraulic cylinders, there aren’t many single acting hydraulic cylinders that are compliant with ISO standards.

A double acting hydraulic cylinder is a hydraulic cylinder in which the fluid alternately acts on both sides of its piston. It has a port on each end, filled with hydraulic fluid for the pistons’ retraction and extension.

This type of hydraulic cylinder is ideal for applications that require fast and predictable retractions, or applications where consistent accuracy is necessary.

In a double acting hydraulic cylinder, the plunger retracts when the hydraulic fluid, which has now been pressurised, is injected into the top port, which forces the plunger back to its original position. It is possible for this process to be done either very quickly, or very gradually with precise control.

Double acting hydraulic cylinders have two ports where pressurised fluid can flow in and out. Fluid flows through one port, which moves the piston forward, which then applies pressurised fluid into the second port which then retracts the piston back into the cylinder.

The standard applications for double acting hydraulic cylinders are those that require repetitive presses and situations that require both pushing and pulling forces. Elevators and forklifts are good examples of double acting cylinder applications.

Double acting hydraulic cylinders can do anything a single acting cylinder can. However, these are especially good for industrial and robotics industries, tasks such as opening and closing doors, and lifting and moving merchandise off conveyor belts. Other uses include medical applications, earthmoving and construction equipment, and even in space programs.

Complexity– Double acting hydraulic cylinders are built slightly different to their single acting counterparts. The parts of a double acting cylinder are more complex. They generally have more pistons, and more seals to accommodate the flow of fluid on both ends for a push and pull control.

Costly– Double acting cylinders are much more expensive than their single acting counterparts. They require larger housing, for example, if it’s used as a feed cylinder and requires coupling with another machine system. Because the system is larger, fluid is often consumed at a faster rate than in single acting hydraulic cylinders.

Single and double acting hydraulic cylinders both serve similar functions, with the double acting hydraulic cylinder being able to do any job a single acting cylinder can, at the cost of being more expensive and requiring more dedicated maintenance.

Single acting hydraulic cylinders are simple, inexpensive, have one job they can do and do it well. These cylinders are exceptionally useful in fabrication, where one repetitive movement is required, such as on a factory line. Manufacturing hydraulics systems strongly rely on low-cost single acting cylinders.

Double acting hydraulic cylinders, in comparison, are far more sophisticated and powerful. Not only can a double acting cylinder perform any job a single acting hydraulic cylinder could, but by having the piston pressured to move in two opposing directions, it’s essential to the way modern pneumatic machinery works today. Things like elevators and forklifts could not exist without double acting hydraulic cylinders.

If an application only needs motion in one direction, a single acting hydraulic cylinder is the safest and most economical choice. However, any situation requiring greater control and power requires a double acting hydraulic cylinder, and the ISO standards compliance associated with them.

A single-speed hydraulic hand pump is a simple and relatively low-cost option. As you pump the lever, the hydraulic oil is drawn from the pump’s reservoir towards your hydraulic tool – (which may be a hydraulic cylinder, ram, puller, or a press).

When using a single-speed hydraulic pump with a tool such as a cylinder, the plunger will advance by the same amount with each stroke of the pump’s handle. The reason for this is because the amount of oil displaced per full stroke is always the same.

For many applications, this is exactly what’s required. But for projects where a cylinder or other tool needs to extend large distances this can be too time-consuming and tedious. This is when a two-speed pump can save the day.

When used with a hydraulic cylinder, this means the greater oil flow in the first stage moves the cylinder plunger a longer distance with each stroke. When it reaches the changeover pressure, the two-speed pump switches from low to high-pressure pistons – typically when the cylinder reaches the load and starts working harder

A two speed hydraulic hand pump can be more advantageous than a single-speed one for applications such as pressure testing, hydraulic presses, and long-stroke cylinders. However, they aren’t suitable for jobs requiring high pressure ‘all the way’.

A single-speed hydraulic pump provides low flow with high pressure – which is usually fine for smaller stroke hydraulic cylinders, flange spreaders, and pullers.

A two-speed hydraulic hand pump creates high flow at lower working pressures and can also provide lower flow when it reaches the higher working pressures. This is especially useful when the cylinder plunger or other hydraulic tool has far to travel before the real work begins. Compared to a single-speed pump, some two-speed types can reduce the number of handle strokes by as much as 78%.

Both types of pumps are available with different oil capacities, and in configurations to suit tools requiring both single and double-acting hydraulic flow.

Double-acting cylinders push harder. Naturally, that would mean they are faster, right? Actually, in order to push harder, double-acting cylinders need much more pressure to operate, and generating that pressure takes time.

Single-acting hydraulic ramps do not need all this extra pressure, so they can raise up to two-and-a-half times faster. This means you can set up your ramp and get to work more quickly instead of waiting and waiting for a double-acting hydraulic ramp to reach the desired height.

Rising faster is not the only way Copperloy ramps save you time. Our unique ramp design allows you to link your ramp directly to the dock or truck. The hand pump is also on the outside of the ramp, so you can quickly start raising the ramp as soon as it is in position.

Safety is always a priority when designing hydraulic ramps. Your forklift operators need a ramp that ensures their safety as they carry pallets on and off the truck. Forklifts alone already introduce a variety of safety hazards to both operators and other employees, so you do not want your yard ramp contributing to the problem. Here at Copperloy, we design our ramps to meet OSHA‘s strict safety standards to prevent potential accidents and protect workers.

Our centrally-located, single-acting hydraulic ramp design offers stability even after positioning the ramp. This cylinder also prevents wobbling and tipping, ensuring forklifts have a smooth ride up and down the ramp at all times. We reinforce this stability by including a safety curb, high-traction deck grating, a low endplate, and an 8-foot level off. These features in combination with the single-acting cylinders make Copperloy ramps the safest option on the market.

Double-acting cylinder systems are much larger than their single-acting counterparts. This also means double-acting hydraulic ramps are much larger, making them less functional and convenient. Single-acting cylinders are simple and compact, so we can more accurately design our ramps to meet the spatial needs of your unique facility.

The single-acting hydraulic cylinder design is much less complicated than double-acting cylinders. The cylinder only applies pressure in a single direction while a spring handles movement in the opposite direction. Not only does the simple design leave less room for errors and breakdowns, but it also makes the ramp more stable overall. A single-acting hydraulic ramp will raise more evenly than double-acting ramps, minimizing wear and tear and preventing downtime.

One of the most obvious differences been single and double-acting cylinders is cost. Single-acting hydraulic cylinders are significantly cheaper to acquire and install. This allows us to minimize manufacturing costs on our end, but more importantly, lower manufacturing costs mean you pay less for your ramp at the end of the day.

The initial cost is not the only way you will save money, however. The low maintenance requirements and exceptional efficiency of single-acting hydraulic ramps ensure you get the most work done in the least amount of time. A single-acting Copperloy ramp will pay for itself in no time by maximizing productivity while minimizing downtime and repairs.

Hydraulic cylinders convert fluid pressure and flow into powerful force and velocity. This converted pressure is then used to help create most of the heavy-lifting equipment around us- from dump trucks and bulldozers that we see on construction sites to gigantic cranes and stadium lights. For all these and everything in between, hydraulic cylinders ensure that the job is done in a smoother, more reliable, and more efficient process, making it an imperative in different industrial fields.

You can find hydraulic cylinders in nearly every mechanical utility and contraption involving heavy-duty push and pull. They come in a variety of sizes, customized designs, and configurations, making them suitable for different forms of applications.

There are two primary ways hydraulic cylinders are manufactured: single-acting and double-acting models. Below, we discuss their main operational differences to help you decide which one best suit your needs and applications.

As their name denotes, single-acting cylinders act in a single direction, meaning that the cylinder can only move in one direction when applied oil flow. For this cylinder to return to its original position, an external force must be supplied to bring the oil back to the pump or system. Some cylinders rely on gravity to go lower; an example is a forklift. While other cylinders, like standard jack cylinders, use an internal spring to return to the original position.

The fluid only applies pressure on the piston’s single side in a single-acting hydraulic cylinder. The cylinder rod will extend whenever a force is applied through a hand, gas, or electric pump. This force pumps the oil into the cylinder’s oilport, making jacking, pushing, and tensioning applications possible.

Double-acting hydraulic cylinders allows for the pressure of the hydraulic fluid to be applied on both sides of the piston. This produces direct extension and retraction control, without supporting a spring or external force to help it return to its original position.

In addition, there can be a variety of combinations of hydraulic pumps and valves connected to these cylinders that enables control of the specific motion or performance of the hydraulic system.

The simplistic build and design of single-acting hydraulic cylinders provide fewer maintenance components. For a project or machine that requires an efficient and reliable hydraulic cylinder, single-acting may be your best option.

Easier to control. Single-acting cylinders have just one port for the hydraulic fluid to enter for a more calibrated and maintained pressure. This entails less complexity in the hydraulic system required to control it since oil flows only through one hose.

Cheaper. Because of this style’s single-acting nature, the overall cylinder assembly is more straightforward, and this generally implies less material, seals, and complexity that can drive up costs. With only a single port to support instead of two, piping and valve purchases cost much less. Single-acting hydraulic cylinders have lower manufacturing, installation, and repair costs.

The process of using a single-acting hydraulic cylinder is highly effective when it comes to equipment and various devices. It is mainly used by those who want to simplify otherwise complex tasks.

Double-acting cylinders offer greater complexity. Unlike single-acting cylinders, they can transfer hydraulic fluids or output forces in extending and retracting directions. In addition, double-acting cylinders can cater to more unique industrial systems, thanks to their pressing and pulling power without the aid of external power sources. Because of this, they are the market’s most commonly used cylinder type.

Strong Versatility.Despite not being the best option for compact spaces, double-acting hydraulics are incredibly versatile. Ports on both ends make hydraulic power available in both directions resulting in an easily controlled push-and-pull motion.

Longevity and Low Maintenance. Due to the nature of a double acting cylinder, most of the internal components are sealed off from the environment and immersed in oil. The seals prevent the ingress of contaminants that would degrade and wear down components in both the cylinder itself, and the hydraulics system that powers it. Immersing the components in oil keeps parts lubricated, keeps water out, and maintains operational temperatures. Depending on the system, the oil can also take away contaminants that work itself into the cylinder away, and work through filters.

Both of these major features result in double acting cylinders and their systems having a longer service life, which results in significantly lowered maintenance costs for the lifetime of the cylinder and system.

ISO standards guarantee every industry’s safety and cohesive operations. Most cylinders use these standards for their ports, mounts, bores, strokes, seals, and other features. This facilitates compatibility of connecting cylinders into existing systems, generally lowers maintenance costs, and guarantees safety if operating pressures and conditions are not exceeded. This varies from each manufacturer, and here at Fluid Tech Hydraulics Inc., we can manage ISO standard cylinders, along with any custom or special application cylinders that have unique specifications.

Double-acting cylinders work best for complex applications, including heavy lifting in one direction. In contrast, single-acting cylinders are more suitable for more straightforward applications.

When choosing the hydraulic cylinder that best suits your needs and application, it’s essential to know that you are working with specialized experts who know how to deal with all the components of the machine in the industry and various applications that relate to it.

If you’re looking for a partner for your next machining project, we at Fluid Tech Hydraulics Inc. have one of the most extensive and complete facilities for hydraulic cylinders on the West Coast. In addition, we provide a broad range of solutions, from resealing cylinders to designing and manufacturing custom cylinders based on your specifications.

... two stage hydraulic hand pumps, easy to handle and use, with very high oil flow rates to operate a wide range of hydraulic cylinders or equipment.

... pneumohydraulic pumps that are compact and easy-to-use. It has a standard reservoir of 2.5L in plastic, and 5 or 10L in steel. The pump can be attached with a threaded G¼" fitting to ...

A compact lightweight pump, the Power Team 60 series is designed for rugged applications and low voltage starting. Experiencing a long, trouble-free life in the most demanding work environments, the 60 ...

... hand pumps come in a variety of configurations to meet the requirements of your application. Along with various oil capacities and flow rates, you can choose from the following options:

... lightweight and portable the Power Team PA6D series pumps are single-speed pumps for driving double-acting cylinders. The PA6D series pumps operate at ...

... : industrial tools, lifting systems, car repair, clamping systems, hydraulic equipment (presses, jacks, …), tire changers, bead breakers, automotive.

The HP-AP pump, like all HP Series pumps, can be installed in any hydraulic applications which requires high working pressures and moderate and controllable oil flow. Our HP Series air-hydraulic ...

... this, PN pumps are extremely handy and stand out due to a very low effort on their handle. The practical pedal locking hook allows to use the lever as a handle during transport by holding it in the correct position in ...

... pneumohydraulic pump incorporates a double-acting pneumatic motor. The pump operates on compressed air with 2 to 7 bar pressure for construction of circuits that demand ...

... for use with either single or double acting cylinders and tools. The HP range offers the ideal solution for applications where completely independent, portable hydraulic power is required. ...

Double-acting, single-stage air-powered compact pump. Standard with a 3/8” NPT female thread and compressed air connector. Excluding coupler, hoses and pressure gauge.

the hydraulic single-port hand-pump range is tailored for use with Equalizer international hydraulic equipment. Certified for use in the hazardous areas ll 2 G ex h T5 GB llB, ll 2D ex ...

Air hydraulic pumps, working pressure 700 bar, using a pressure multiplicator. Recommanded solution to replace hand pumps. For single and double acting ...

If you need power, there’s nothing like a hydraulic cylinder to deliver a big punch. It’s the workhorse of the industrial world for the heaviest lifters and movers, including bulldozers and dump trucks. Hydraulic cylinders are commonly used in mobile applications. Bore sizes can range from a few inches to several feet in diameter.

Pneumatic cylinders are typically used on industrial machinery and rely on compressed air pressure from 15-110 psi. Pneumatic cylinders tend to have less overall cost associated when compared to hydraulic cylinders. Pneumatic cylinders offer more main body choices, including extruded aluminum profiles for easier integration into machinery.

Designing around them requires knowledge of pressure, force, and safety considerations. But it all starts with understanding the difference between a single and double acting hydraulic cylinder.

The heart of the device is the actuating cylinder piston which has pressurized air or hydraulic fluid pumped against it. If the fluid comes in one side and pushes the piston, it’s a single acting type. If there is fluid on both ends with a return line, it is double acting. That’s what it comes down to – whether you have one air or hydraulic service line at one end or two lines, one at each end.

Here"s how a double acting pneumatic cylinder works: Compressed air is forced into the port at one end of the cylinder to push the piston forward, then into the opposite port to push the piston back. The alternating pressure moves the load a specified distance and then automatically retracts the piston for the next forward stroke. This process can be accomplished with a simple on-off control valve.

Here"s how a double acting hydraulic cylinder works: Hydraulic fluid is pumped into one port to extend the piston, then pumped into the opposite port to return the piston to its original position. This is essentially the same as for the pneumatic cylinder, except that the two service lines carry hydraulic fluid instead of compressed air.

A single acting cylinder is simpler, so there is less to maintain. With only one line, the action of the cylinder is determined entirely by the pressure on that one line. They often have a spring or something similar to push or retract the piston rod, but they might rely on the force on end to push it back. Simplicity is always good for equipment that needs to be rugged and reliable.

A double acting cylinder alternates cycles of pressurized fluid to both sides of the piston and creates extend and retract forces to move the piston rod, permitting more control over the movement. Using a control system made up of a 2-, 3-, 4- way position valve would be required to achieve the desired movement for your application.

What it comes down to when selecting which type of cylinder is the amount of control that you need versus what you can afford to have in place. If the heavy lifting, so to speak, is only in one direction, a single acting hydraulic or pneumatic cylinder may be your best bet. If you are moving a part in two directions and need to have full control, it’s best to have a double acting hydraulic or pneumatic cylinder.

Be sure to discuss your application with a technical sales professional who can assist you with your cylinder selection and offer you other tips that you may not have considered when choosing the right hydraulic or pneumatic cylinder for your application.

The workhorses of linear power delivery are always going to be hydraulic or pneumatic cylinders. Whether you need control or ruggedness can often be how you make your choice. Whether the simplicity of a single or double acting hydraulic cylinder is your best bet, you can be sure that with the right design the force will always be with you.

air-driving action is the same as the Sprague air driven S-216-J series hydraulic pumps described on page 18. Being air driven, these double-acting pumps are non-arcing and non-sparking, safe for use in hazardous or confined areas.

Services oil and non-corrosive liquids. Not for water service. With a 6.8 pumping ratio, this double-acting pump is well suited for liquid transfer, low pressure hydrostatic testing and other industrial uses.

This pump discharges volume liquids up to 12 gallons per minute and provides for selected discharge pressures up to 680 psi. With its liquid body and main components made from anodized aluminum alloy, the pump is reduced in weight and lower in cost. The standard pump’s special seals in the wetted section are compatible with a wide range of chemicals while other seals in the pump are nitrile. Other seal compounds are optional.

Services oil, water and many corrosive liquids. With a 34 to 1 pumping ratio, this double-acting pump discharges volume liquids at any selected pressure up to 3,400 psi, suitable to many industrial applications requiring volume liquid delivery at higher pressures and holding cycles.

This pump uses an internal check valve in its liquid piston head, to obtain a double-acting, steady flow of liquid. This unique design results in higher pressures and uses material resistant to many corrosive liquids. The pump has special dynamic seals to accommodate low lubricity liquids. The pump body is brass.

Services oil and non-corrosive liquids. Not for water service. Its general design is identical to the S-216-JD-34 pump described above. The -36 pump has an aluminum body which significantly lowers the price of the pump and reduces its weight by four pounds. The pump has nitrile seals.

There are several sections you can look at within hydraulic cylinders that would allow you to tell them apart. We’re here to help you figure out which is which and get the most out of your components.

These hydraulic cylinders have only one port available for the user to connect hydraulic cylinders or hose fittings to. As a result of there being the single port, this is also where the hydraulic fluid enters the system which then extends the rod due to the area difference. To return the piston rod an external force or gravity function is used.

Single acting cylinders are simpler than their double counterparts and require less maintenance throughout their life, due to their actions being determined by the pressure only being on one line.

Double acting hydraulic cylinders have two separate ports. The first port is where advanced (extending) hydraulic hose fittings will be attached to the cylinder. Whereas the second port is where the retracting hydraulic hose fittings are attached. In this case hydraulic fluid is supplied for both the retraction and extension actions within the hydraulic cylinder, so to return the piston rod an external force is not needed.

With the double acting cylinder the user needs to have full control of the mechanism as the component is moving in two separate directions without the need for manual returns on the piston rod. This means that the hydraulic cylinder needs to be checked regularly and monitored more closely than the single acting cylinder.

For those needing to eject parts off of a conveyor belt then the single acting cylinder could be for you. Need speed and force? Then the double acting cylinder would be better suited for the application you have in mind.

If you are still unsure about which cylinder is the best one for you, then get in contact with our expert team. They’ll offer technical advice and even find you the perfect hydraulic cylinder for you today!

I wrote a very helpful review about how to make this pump work if your old pump had a return line, but the Amazon review police didn’t like it and wouldn’t post it. I’ll try again. If your old pump had a return line, you can still use this pump. You just have to remove the old line from the cylinder and screw in a breather. I got one from my local hydraulics shop. You can see it in my pictures. It’s at the top of the cylinder. Everyone is correct about the instructions being terrible. This pump was supposed to come with an adapter for SAE fittings, mine did not. I brought my hose at the metric fitting that came with it the hydraulic shop and they gave me what I needed. So far it works just fine with an empty load but I haven’t had a chance to try it with a full load. I also can’t speak to longevity. It’s not difficult to install once you have the correct fittings. If your current set up is a single hose and your cylinder already has a breather then you should have no problems (other than getting standard fittings). The pump itself looks like the thread going into it is standard, but it’s not. Standard will fit, but loosely. Get an adapter for a correct one.

There are two most commonly used types of hydraulic cylinder: single acting and double acting cylinders. One type of cylinder is not innately better than the other and the decision is not normally an either/or choice.

Rather, both single and double acting cylinders have their uses and applications where they are better suited than the other type. In this article we take a brief look at each type, explaining how they work and the applications they are found in.

In a single acting hydraulic cylinder, fluid pressure is exerted on one side of the piston only, so that the piston rod acts like a hydraulic ram, pushing outwards but not pulling back on the retract movement. These cylinders need an external force to retract the piston rod, such as a pump, motor or set of internal springs.

While high quality single acting hydraulic cylinders are reliable units, those equipped with retractable springs are vulnerable to component failure as the springs wear out. This manifests as a gradual reduction in force on the retract movement. They are also more difficult to seal and can become damaged over time through exposure to corrosive fluids.

A double acting cylinder is capable of pressure being exerted on either side of the piston alternatively. This means that both outward and retraction movements can be achieved under the cylinder’s own pressure without an external source of power. This can be used simply to return the piston to its starting position, or to apply an alternating force on both sides of the cylinder – for instance to operate a crankshaft.

The decision between a double acting or single acting cylinder often boils down to one of control. How much precision is required when exerting force in your hydraulic system? If you need to exert a large force to move a load in a single direction – e.g. for heavy lifting applications – a single acting cylinder may be sufficient. However, if you need to direct a load in two directions or have greater flexibility over the movements of the cylinder, a double acting cylinder will give you more control.

We have a range of single acting and double acting hydraulic cylinders available for immediate dispatch from our extensive stock. Click here to check our current availability. For questions and product enquiries, please call 01299 896953.

Various tools and machines nowadays utilise systems that allow them to operate effectively. One of the systems that are being used by these things is hydraulic systems.

Hydraulic systems can carry out tasks optimally by utilising a pressurised fluid. They normally have a pump that pushes hydraulic fluid through their system. As the fluid passes through the valves and gets into the cylinder, its hydraulic energy is converted into mechanical energy. The purpose of the valves is to direct the liquid flow. They can likewise mitigate the fluid’s pressure whenever necessary.

Hydraulic cylinders, alternatively, are meant to generate mechanical force in a linear motion. These components are responsible for the movement of tools, machines, and other devices that utilise hydraulic systems. To date, industries can choose between single- and double-acting hydraulic cylinders.

Single-acting hydraulic cylinders have one port that allows the entry of hydraulic fluid in one direction. Their piston only extends as the cylinders receive pressure from a pump. The piston then retracts by an inbuilt spring or by the load once the hydraulic fluid has been released through the same port.

What is great about single-acting hydraulic cylinders is they have a low cost of initial purchase. They also have a simple design and compact form factor, making their installation convenient and straightforward. They can likewise provide significant savings in valve and piping expenditure. These cylinders, however, may maximise a spring that limits the working area. They may also have reduced thrust because of the opposing spring force. Ultimately, they can become inconsistent due to extended spring usage.

The features and benefits of single-acting hydraulic cylinders make them convenient for machines that carry out lifting, clamping, positioning, and punching operations.

Double-acting hydraulic cylinders, on the other hand, maximise two connection ports that allow their piston rod to move forward and backward. The extra port also helps in regulating the operation of the plunger during retraction as well as ensuring that it will return to its starting point in a short time. These ports also allow the hydraulic fluid to enter in and out without any issues.

One of the benefits of maximising double-acting hydraulic cylinders is they can provide more control over movement due to the presence of two ports. They are also faster, stronger, and more energy-efficient. Double-acting hydraulic cylinders can likewise apply push and pull forces and carry out a faster retraction. As for their drawbacks, double-acting hydraulic cylinders can cost more than their single counterparts. They likewise require larger housing and can be more complex.

Double-acting hydraulic cylinders’ features and benefits allow them to be beneficial for machines that carry out repetitive actions. They can also be useful for machines that require push and pull forces.

If you have to conduct lifting and other similar operations, you may want to opt for single-acting hydraulic cylinders. You must go for double-acting hydraulic cylinders if your machines must carry out repetitive actions. To learn more about hydraulic cylinders, you can contact us at Mobile Hydraulic Specialties.

You have two general options when you need to use a hydraulic cylinder as part of your hydraulic system: single-acting or double-acting hydraulic cylinders. Both types are able to handle high-powered work to lift, move, pull, press, or complete other desired tasks.

A single-acting hydraulic cylinder has a single inlet connection for the hydraulic fluid. As the fluid flows into the cylinder, it pushes the cylinder piston rod to extend outwards in a single direction. Once the fluid flow stops the cylinder stops extending, when the valve operating the cylinder is reversed, a spring or gravity causes the piston to retract.

For example, the arms on a construction front loader could use a single-acting hydraulic cylinder to lift and raise the bucket on the front of the vehicle. When the line to the cylinder is opened to tank gravity, along with the weight of the bucket and its contents, will cause the piston inside the cylinders on the loader arms to retract and lower back down to the ground.

A double-acting hydraulic cylinder has dual inlet connections for the hydraulic fluid. Just like a single-acting hydraulic cylinder, one inlet will allow fluid to flow into the cylinder to extend the piston rod outwards to perform the designed work.

However, instead of relying on a spring or gravity to cause the piston to retract, hydraulic fluid is used. So, first, the fluid to the piston extension inlet is stopped. Then, hydraulic fluid is pumped into the second inlet on the other end of the cylinder to cause the piston rod to retract. As it does, the hydraulic fluid behind it is pushed back out through the inlet.

Double-acting hydraulic cylinders provide a bit more flexibility when controlling piston extension and retraction. It is easy to move the piston back and forth and ensure the plunger can be fully retracted to its original position.

In addition, work can be performed with double-acting cylinders somewhat faster since you do not have to wait for gravity or a spring to retract the piston.

Aside from how the piston rod is operated and having one or two hydraulic fluid inlets, there are some other differences between double-acting and single-acting hydraulic cylinders you need to know. By understanding these differences, it can help you choose the right hydraulic cylinder to meet your objectives.

Now that you have a better understanding of how double-acting hydraulic cylinders work and their pros and cons, let’s look at some of the key applications of using this type of cylinder for various applications.

For starters, double-acting cylinders are perfect for applications that require pressing, such as imprinting. The top pressure plates usually require the cylinder to be installed upside down. As such, the cylinders on the top pressure plate would not retract using a spring or gravity found in a single-acting cylinder.

Next, double-acting cylinders are well-suited for repetitive applications that need to be performed frequently—for example opening and shutting gates or doors. Operating the digger arms on backhoes or excavators.

Third, double-acting cylinders are better suited if you require a delayed or controlled reaction time as part of your hydraulic system functioning. Most importantly, if you desire the flexibility of pushing and pulling hydraulic operations, you will want to use double-acting cylinders.

Single-acting hydraulic cylinders have their useful purposes, too. They are a good choice for generalised lifting applications where springs or gravity can be used to retract the piston rod.

Another application for single-acting cylinders is whenever you do not require fast retraction and the cylinder is not being installed upside down. For instance, a hydraulic vehicle jack in a car service centre could use a single-acting hydraulic cylinder and rely on the weight of the vehicle to gradually cause the piston to retract.

In addition, single-acting cylinders are well-suited for a wide range of light commercial and industrial applications that require basic lifting or pushing movements. For example, some trash compactors use a single-acting hydraulic cylinder to compact the trash and a spring to retract the piston.

When choosing single-acting or double-acting hydraulic cylinders for your hydraulic system, you need to make sure that cylinders will perform the desired work and functions. It does not make any sense to invest in a single-acting cylinder when it will not perform the required work. Nor does it make sense to invest in a double-acting cylinder when a single-acting cylinder will meet your needs.

For example, if you need to move whatever is connected to the cylinders in two directions, then a double-acting cylinder is best. On the other hand, if you need to move the piston rod in a single direction and can rely on gravity or a spring for retraction, then a single-acting cylinder would be a good choice.

In addition, some system designs could use a combination of single-acting and double-acting cylinders depending on the system’s functions and applications. Last, you want to choose hydraulic cylinders that are built with high-quality parts and components that meet industry standards.

You can find the high-quality single-acting and double-acting hydraulic cylinders for every industry at White House Products, Ltd. Whether you need a single-acting cylinder for a light construction vehicle or double-acting cylinders for heavy industrial manufacturing purposes, we have or can make to your specification the cylinders you need.

We are also happy to help you choose which cylinders are best for your applications, as well as assist you with new hydraulic system designs. For further information, to request a free quote, or to order the cylinders you need, please feel free to contact us at +44 (0) 1475 742500 today!

A plunger pump operates using the reciprocating motion of plungers or pistons. Depending on the design of the pump, the use of a single or multiple plungers may be used.

Action 3: After reaching it’s maximum position, it is then pushed back into the cavity. During this process, the piston applies enough pressure to the fluid to overcome the pressure in the outlet of the pump. This pressure differential pushes the fluid from inside the cavity through the outlet of the pump.

All these parts have the basic functionality of moving the liquid inside the cylinder. The piston is a lubricated sliding shaft that moves inside the cylinder and pushes the liquid in a forward and backward motion, creating a cavity and a high volume pressure at the outlet. In a diaphragm pump, the diaphragm is used to avoid leaking of the liquid since it completely seals the liquid to penetrate outside, and hence they are especially useful when the liquids are dangerous or toxic. In a plunger pump, there is a high-pressure seal that is stationary and a smooth cylindrical plunger slides through the seal.

Reciprocating pumps are different from Centrifugal pumps on basis of its working, features, applications etc. The main difference is that Impellers are used in Centrifugal pumps whereas in reciprocating pumps piston is used to move the liquid. Centrifugal pumps continuously discharge the liquid, unlike reciprocating pumps. They are used for high viscous fluid and are lighter in weight, less expensive as compared to reciprocating pumps.

The basic Quality standards of reciprocating pumps include ISO13710, API (American Petroleum Institute) standard 674, API standard 675 “Positive Displacement Pumps- Reciprocating”  and Reciprocating Pump Standards, Hydraulic Institute.

High Pressure, Low Flow Applications: Reciprocating pumps are generally designed to pump in low flow, high head applications. One of the most extreme of these applications is water jet cutting, where only a few gallons pass through the pump per minute but exceed pressures of 10,000 PSI.

Proven, Common Technology: Reciprocating pumps are one of the oldest, most proven pump types. Today, a wide variety of reciprocating pumps can be found in many different materials, types, and sizes. Reciprocating pumps range from less than 1 horsepower to over 3,000 horsepower.

Durability: Reciprocating pumps are used in some of the most abrasive and corrosive applications. Fluid ends and fluid end parts can be made of many different materials such as stainless steel, aluminum bronze, tungsten carbide, ceramic, and more. A wide selection of valve types is used in abrasive applications such as pumping cement, sand slurry, mud, etc.

Efficiency: Reciprocating pumps operate at high a higher efficiency compared to other pump designs. In most cases, at any setpoint, reciprocating pumps operate around 90%.

There are several performance indicators of a reciprocating pump which determine how effectively it works. Following are some of the key performance indicators:

High Maintenance / Short Life:The main disadvantage of a reciprocating pump is high maintenance and short life. There are many parts in the pump works, all constantly changing directions. Unless careful maintenance takes place, the lifespan of the pump is greatly reduced. While pumps such as centrifugal pumps can last 15 to 20 years with little maintenance, a reciprocating pump requires higher levels of attention and rebuilding several times within the same time frame. The cost of a reciprocating pump rebuild is usually inexpensive which still makes them cost-competitive compared to longer-lasting, higher-priced pump designs.

Pulsations:A characteristic of reciprocating pumps is the production of pressure pulsations through the pump inlet and outlets. The reciprocating motion of the pump produces these pulsations. Increasing the number of pump chambers can greatly reduce the pulsations produced, but it does not remove them completely. To negate damage to piping and surrounding systems or the pump itself, pulsation dampeners must be installed. Further system design can further decrease pulsations to nearly zero. In all cases, overall system design is important when using reciprocating pumps.

Plunger pumps come in a variety of styles, shapes, and sizes. The specific type of pump chosen for an application takes into account the pressures encountered, the flow rates needed, measurement and control systems, fluid viscosity and corrosivity, pipe material, etc. Careful attention should be given to the application before selecting a pump. Selecting the wrong pump for a job can result in damage to equipment, piping, systems, and possibly endanger personnel.

Simplex, Duplex, Triplex, Quintuplex Pumps: Many reciprocating type pumps are simplex(one), duplex (two), or triplex (three) cylinder. Duplex pumps are usually used where the two pumps can be used alternatively. Such pumps are commonly used in oil-line pumping, mine de-watering, and chemical and petroleum products transfer, but has many more applications. A triplex pump consists of three plungers, with the aim of reducing the pulsation of a single reciprocating pump. Quintuplex pumps are designed with a gear case that assists in a high-pressure task. Common applications of which are in cement slurries, sand-laden fluids, crude oil, acids, mud, and other oil well-servicing fluids. Well known manufacturers for these types of pumps are National, Gardner Denver, FMC, SPM, Oilwell, Kerr, Union, Gaso, Emsco, Aplex, and Wheatley.

Metering Pumps: A metering pump is usually used where the rate of flow of the liquid needs to be adjusted in a specific time period. Most of the metering pumps are piston-driven and are called Piston pumps. Piston pumps can pump at a constant flow rate against any kind of discharge pressure. Both Piston pumps and Plunger pumps are reciprocating positive displacement pumps that use a plunger or piston to move fluid/substance through a cylindrical chamber. Manufacturers such as

Reciprocating Pumps can also be classified according to the number of cylinders: Single cylinder and double cylinder pump. They are also sometimes classified according to their operation, known as simple hand-operated reciprocating pump & power-operated deep well reciprocating pump.

Reciprocating positive displacement pumps are highly effective, where a high degree of accuracy and reliability under different ranges of conditions that are required. Reciprocating pumps with very high efficiency are often available in a wide range of hydraulic, mechanical, and material options. They are widely used across industries such as chemical, petrochemical, refinery, pharmaceutical, cosmetic and water treatment. Typically, these types of pumps are used for applications such as Salt Water Disposal, Well Services, Descaling, Hydraulic Fracturing, and Oil & Gas Pipelines. All types of reciprocating pumps are easily available in the market to meet the diverse demands, as per different processes and applications. Piston pumps are widely used in applications such as Energy Recovery, Steam Recovery and hazardous area pumping and are available with manufacturers such as

Diaphragm Pumps are commonly used for Sludge Transfer, Acid Pumping, and Chemical Fluid Transfer and are easily available with manufacturers such as Wilden, Sandpiper, ARO, Roughneck, and Graco.

All the mentioned manufacturers in this article, offering various kinds of pumps hold a good reputation with respect to quality, price, revenue (value), and market share and are preferred by many consumers. However, a thorough check of all its features, specific to your process application, should be ideally done to buy the most suitable reciprocating pump, which can be used for a longer period of time requiring low maintenance, ease of operation, and easy availability of its spare parts.

Reciprocating pump terms are based on how the fluid is pumped (action) and the number of plungers or pistons (arrangement). For example, a Union TX-200 is a “single-acting triplex plunger pump”, a Gaso 1849 is a “double-acting duplex plunger pump”, and an Oilwell B-558 is a “single-acting quintuplex plunger pump”.