There are several types of hydraulic motors, each with their own unique characteristics and advantages. However, some of the most common types of hydraulic motors are: Gear Motors: These motors are simple and compact, making them a popular choice for many applications. They are also known for their high torque output, which makes them ideal for heavy-duty applications. Vane Motors: Vane motors are known for their efficiency and smooth operation. They work by using vanes that slide in and out of rotor slots, which creates a continuous flow of fluid and rotational motion. Piston Motors: Piston motors are highly efficient and can generate high power output, which makes them ideal for applications that require high torque and speed. They are often used in heavy machinery and construction equipment. Overall, the choice of hydraulic motor depends on the specific application and the desired performance characteristics, such as torque, speed, and efficiency. Read also about:- Eaton hydraulic pump Principle of Rexroth Hydraulic Motors The principle of a Rexroth Hydraulic motor is based on the conversion of fluid pressure and flow into rotational mechanical power. The motor typically consists of a rotating output shaft, a cylinder block with pistons or vanes, and inlet/outlet ports for the hydraulic fluid. When pressurized hydraulic fluid enters the motor through the inlet port, it creates a force on the pistons or vanes in the cylinder block. This force causes the pistons or vanes to move, which in turn causes the output shaft to rotate. The rotational speed and torque of the output shaft depend on the flow rate and pressure of the hydraulic fluid. The hydraulic motor operates based on the same basic principles as a hydraulic pump. However, instead of converting mechanical power into fluid power, a hydraulic motor converts fluid power into mechanical power. Hydraulic motors are widely used in various applications, such as construction machinery, agricultural equipment, and industrial machinery, due to their ability to provide high torque and power in a compact and efficient design. Source: Rexroth hydraulic Motor
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We are aware that a pump is a mechanically powered tool used to elevate, transfer, and compress fluids. Many different industries, including mining, the chemical industry, the automobile industry, and others, rely heavily on pumps. For various uses, the industry offers a wide range of pumps. Based on the technique utilized to transfer the fluids, they are usually divided into two categories.
When using a positive displacement pump, the fluid moves at a fixed speed regardless of the inlet pressure. The hydraulic pump can therefore be categorized as a positive displacement pump. We can discover more about hydraulic pumps right here. The Rexroth hydraulic pump built into the hydraulic system is capable of raising, lowering, opening, and closing components, among other tasks. According to your needs and functions, such as working medium, required pressure range, motor type, etc., a variety of hydraulic pumps are offered on the market. The hydraulic pumps are run on the displacement concept. The most often used hydraulic pumps are the gear pump, piston pump, and vane pump. Although Rexroth hydraulic pumps transform mechanical energy into hydraulic energy, its use is similar to that of other types of pumps. How are hydraulic pumps operated? The hydraulic pump has two steps to it operation. Mechanical action first creates a vacuum at the pump’s inlet, which causes atmospheric pressure to force the liquid from the reservoir into the inlet line. Second, the fluid is forced into the hydraulic system from the pump outlet by mechanical action. The hydraulic drive system’s major components are hydraulic cylinders, pumps, and motors. The hydraulic pump and motor share a similar architecture, although they serve different purposes. A hydraulic motor transforms hydraulic pressure into torque or spin, while a hydraulic pump transforms mechanical energy into hydraulic energy. Due to their comparable designs, some hydraulic pumps with set displacement sizes can also be employed as hydraulic motors. Winches, crane motors, self-propelled cranes, excavators, mixer and agitator motors, roller mills, etc. all require hydraulic motors. Read Also About: Eaton hydraulic pump An essential part of the hydraulic system is the hydraulic pump. Any slight flaw in the pump will have a negative impact on the system’s precision and accuracy. Construction materials are chosen based on the temperature and pressure that the hydraulic system will experience in order to minimize wear and give maximum performance. High-pressure hydraulic systems use titanium alloys and polymers, while other production materials include plastics, synthetic rubbers, alloys, etc. Therefore, before investing in a pump, always conduct a thorough needs analysis. Source: Rexroth hydraulic pump We can consider Rexroth hydraulic pump as a heart of any hydraulic system used. Every hydraulic system requires high-pressure incompressible fluids for generating force. A hydraulic pump plays an important role in converting the mechanical energy to hydraulic energy. You can find different varieties of pumps in the market. It will differ depending on the size, shape, and method of operation. A pump can be operated either manually or mechanically. Hydrodynamic (non-positive displacement) and hydrostatic (positive displacement) are the two classifications of the hydraulic pump. Hydraulic pumps are used for low-pressure high-volume applications. These pumps will force the low-pressure fluid to flow at a higher speed and result in the flow of high-volume fluid in minimum time. How hydraulic pump works? You can learn the basic details on the working principle of hydraulic pumps from this article. In hydrodynamic pumps, the fluid weight and the friction are the resistance encountered and the pump operate using centrifugal force. The rotating impeller blades of hydrodynamic pumps will throw the fluid entering at the center of the pump housing to the outlet. They are used for creating a smooth continuous flow, but the resistance encountered will inversely affect the performance. Read Also about: - Rexroth hydraulic valve Construction of Rexroth Hydraulic Pump Hydraulic pumps are used for energizing fluids to flow from a lower potential to higher. It has several mechanical moving components that receive energy from any other source (mainly electrical). Most of the hydraulic pumps have rotating parts that operate using the electrical source. The basic components used in hydraulic pumps are: Pump Housing/Casing: This is the exterior part of the hydraulic pump to protect the inner components. Smaller pumps use aluminum as the construction material and others use cast iron. Impeller Blades: The impeller blades will rotate inside the pump housing. The rotation of impeller blades will rotate the surrounding fluids and thus the fluid flow at a higher potential. Also, they play an important role in lubricating and cooling of the system. Pump Shaft: Pump shaft is used to mount the impeller. Steel or stainless steel are used for constructing the shaft and the size will depend on the impeller. Bearing Assembly: Assistance for continuous impeller rotation is the function of pump bearings. Most of the centrifugal pump uses standard ball-type anti-friction bearings. Sealings: Most of the pumps fail due to the damage of bearing assemblies. Seals will eliminate the risk of failure to a greater extent by protecting the bearing assemblies from contaminants and coolants. Rexroth Hydraulic Pump Working Hydraulic pump will carry oil or any other fluids from the reservoir/tank to other parts of the system. The working of the hydraulic pump is based on displacement principle (Any object, wholly or partially immersed in a fluid, is buoyed up by a force equal to the weight of the fluid displaced by the object). Both the inlet and outlet of the hydraulic pump contains different check valves. The check valve located at the inlet will push the fluid from the tank/reservoir into the pump and the one located at the outlet will pump fluid to other parts of the system. The vacuum created will push the fluid into the pump inlet. Electric, motor or a gas engine are used as the prime mover to rotate the shaft. The impeller blades located on the shaft and the surrounding fluids will rotate with the movement of the shaft. A vacuum is created inside the cylinder when the piston is pulled. The vacuum created will close the outlet check valve and open the inlet check valve. Then, fluid from the tank or reservoir enter into the pump and partially fills the cylinder. When the piston is pushed, the fluid molecules will come closer and the inlet check valve will close. This will open the outlet check valve and fluid flows through it. Source: Rexroth hydraulic pump Hydraulic pumps are manufactured to meet specific system necessary such as temperature, pressure, and motor type. It is mainly categorized into three: Hydraulic pumps Straight, helical or zigzag gears are used in these pumps. Straight spur gears are commonly used and helical or zigzag gears are more expensive and quieter. In gear pumps, fluid is transferred between meshing gears. One shaft is used to drive one gear and make the other idle. Gear pumps can withstand pressure around 210 bar and will operate at high speed from 3000-6000rpm. External gear pumps, internal gear pumps, screw pumps and ring pumps are the different classifications of gear pumps. External gear pumps Both industrial and mobile systems use these pumps in various applications such as machine tool lubrication pumps, fluid power transmission units, and engine oil pumps. Here, to close the teeth of the gear pumps, one wheel is attached to the motor, and the other will rotate in the opposite direction. The bearing block will help position the wheels for minimum clearance while the teeth are engaged. A lobe pump is a type of external gear pump that drives both lobes by motors located outside the chamber. Internal gear pumps Internal gear pumps are versatile and can handle thicker hydraulic fluids such as asphalt, chocolate and adhesives. They are used in applications such as plastics, machine tools, presses, electric hoists, etc. These pumps can handle higher viscosity and temperature ranges. Internal gear pumps can run dry for short periods and are self-priming, non-pulsating and bidirectional. These gear pumps are reliable, easy to maintain and operate due to the minimum number of moving parts. screw pumps These pumps are commonly used in theaters and opera houses due to their low operating noise level. Among gear pumps, screw pumps have a high displacement volume. These pumps have two or three worm gears inside the pump casing. Therefore, they are also called worm gear pumps. Single-screw, twin-screw and triple-screw pumps are the three classifications. These pumps have an axial flow in the direction of the power rotor and the fluid will flow linearly. Loop bomb These pumps are commonly used in hydraulic power steering systems as a pressure lubrication system. The annular pump rotor is built directly into the housing of the high-pressure pump like the radial piston pump. Hydraulic vane pumps Vane pumps work efficiently with low viscosity liquids such as ammonia, solvents, alcohols, fuel oils, gasoline and coolants. The lack of metal-to-metal contact within these pumps will eliminate the corrosion associated with them. It has such characteristics as low noise, dry core, easy maintenance and good suction properties. Vane pumps provide a steady flow while maintaining a high speed of up to 3000 RPM. Operating pressure does not exceed 180-210 bar. Some constant pressure pumps or fixed vane pumps can adjust the center of the vane body. Sliding vane pumps (left), vane vanes, vane vanes, and vane vanes are different types of pumps. Among them, external vane pumps can handle large solids and flexible vane pumps can handle small solids but create a good vacuum. For short periods, slip vane pumps can dry out. In unbalanced vane pumps, all pumping occurs on one side of the rotor and shaft. Unbalanced vane pumps have a circular casing and balanced vane pumps have an oval casing with different pumping areas on either side of the rotor. The balanced vane pump uses a fixed displacement design, while the unbalanced vane pump uses both constant and variable displacement. Hydraulic piston pumps This is a rotating unit that produces a flow of liquid using the principle of a reciprocating pump. These types of pumps use a combination of several piston and cylinder assemblies. Piston pumps can maintain a large flow of liquid at a high temperature. Efficiency, reliability and compact size are the hallmarks of hydraulic piston pumps. These pumps control fluid leakage through effective sealing practices. Axial piston pumps and radial piston pumps are two classifications of piston pumps. In axial piston pumps, the rotary motion is converted into axial reciprocating motion. In the case of a radial piston pump, the pistons are arranged radially. Source: Rexroth hydraulic pump We know that most hydraulic applications use hydraulic pumps to convert mechanical energy into hydraulic energy. Both mobile and industrial hydraulic machines use hydraulic pumps. Forestry equipment, construction equipment, mining machinery, excavators, dump trucks, cranes, graders, loaders, dump trucks, tractors, etc. Use hydraulic pumps to maximize performance. Hydraulic pumps play an essential role in maintaining the accuracy and efficiency of the entire system. Plastics, synthetic rubber and steel alloys are used as manufacturing materials. Materials are selected based on the temperature and pressure exposed to these pumps. Titanium alloys and polymers are high strength materials used for high pressure applications. The fire-resistant and corrosion-free properties of the hydraulic system paved the way for continued growth in the industry. In the previous article “Hydraulic Pumps: The Ultimate Guide for Beginners”, we have discussed all the essential details like introduction, working principle of hydraulic pumps, selection criteria, difference between hydraulic pumps and motors, etc. In this article, you can find out the details. On the types of hydraulic pumps and their principle of operation. Operation of the hydraulic pump The principle of operation of all pumps is the same. They work on the principle of displacement. We discussed in the previous article that the vacuum created at the pump inlet will drive atmospheric pressure into the pump inlet. This liquid is then conveyed to the outlet of the pump by using mechanical energy. The hydraulic pump has two check valves, one at the inlet and the other at the outlet. The first check valve only allows fluid to enter through it, while the second allows fluid to drain through. When the piston is pulled, a vacuum is created inside the cylinder. The resulting vacuum will close the outlet check valve and atmospheric pressure will force the liquid through the inlet valve. When the cylinder is partially filled, the piston will be pushed and the liquid molecules will move closer together. This will close the inlet valve and open the outlet valve. The fluid will flow into the hydraulic system through it. Source: Rexroth hydraulic pump Almost all hydraulic applications use hydraulic pumps. The pump performs the task of converting mechanical energy into hydraulic energy. Take reservoir fluid and transfer it to other system components through pipes. From simple hand pumps to complex piston and gear pumps, you can find many classifications of hydraulic pump. A manual pump requires mechanical force to start the process, while complex pumps use electric motors to actuate hydraulic pumps. Forestry equipment, mining machinery, excavators, dump trucks, cranes, fireworks, loaders, etc. They use hydraulic pump applications. Positive displacement and non-positive displacement are the two main classifications of hydraulic pumps. Non-positive hydraulic pumps produce a continuous flow and a positive displacement pump produces a constant flow approximate to a constant speed regardless of pressure changes. Here, we will discuss a specific positive displacement pump called variable displacement pump. A variable displacement pump converts mechanical energy (rotation or engine rotation) into hydraulic energy. However, some variable piston pumps will also perform opposite operations. That is, the conversion of hydraulic energy into mechanical energy (the function of a hydraulic motor). The flow and output pressure of the variable flow pump can be changed during operation. These pumps are commonly used to boost a wide variety of tools. But such bombs are more complex and expensive compared to others. The construction industry, mining, agriculture, oil and gas industry, and many other industries use variable displacement pump applications. These pumps do not require manual control. The valves that control the speed of the motors will control the fluid flow. Therefore, variable flow pumps are more energetically efficient than fixed flow pumps. In variable displacement pumps, no heat is generated by moving the oil through the circuit when no work is being done in the actuator. These pumps only produce power when required. In addition, these pumps minimize the use of flow control and pressure control valves. Piston pumps and plate pumps are two categories of variable displacement pumps. The wide range of volumetric efficiency and pressure of variable displacement pumps make them more popular than plate pumps. More details about these pumps are provided below. Variable displacement piston pump High efficiency, high pressure operation and various types of control applicable are the advantages of piston pumps. Pistons, piston or cylinder block, valve plate, piston shoes, rocker plate and driver are the important components of a piston pump. Axial piston pumps, radial piston pumps and inclined shaft piston pumps are the common types of piston pump. Pumps that convert the rotary motion of the input shaft into an alternating axial motion of the piston are called axial piston pumps. In folded-axis piston pumps, the axis of the cylinder block is bent to produce reciprocal action of the piston. In radial piston pumps, the pistons are aligned radially in the cylinder block. Variable displacement plate pump The plate pump has many pallets that slide into the grooves of the rotor and can become a faulty pressure pump that replaces the drive wheel. Defective pressure pumps mean that the pump's operation stops when the pump reaches a certain pressure. For each revolution, variable displacement plate pumps deliver the same fluid volume. Two types of variable displacement plate pumps are direct drive and pilot drive. Source: Rexroth hydraulic pump Read More about: Rexroth hydraulic pump Rexroth hydraulic valve Eaton hydraulic pump Eaton hydraulic valve Rexroth a4vg A4VG Series Piston Pumps A10VG Series Piston Pumps PGH Series Internal Gear Pumps A4VSO Series Piston Pumps A7VO Series Piston Pumps A8VO Series Piston Pumps A2FO Rexroth hydraulic pumps Series PV7 Series Vane Pumps A10VO 52R Series Pumps A10VO 31R Series Pumps Atos PVL Vane Pumps Denison Vane Pumps External Gear Pumps Axial Piston Pumps Fixed Pumps Axial Piston Variable Pumps Open Circuit Dowty Gear Pumps Vane Pumps PV7 4WE6 Valves 3WH and 4wh Series 3WE6 Valves DB/DBW/DBDS Series ZD/ZDR Series Valves 2FRM Series Valves Directional Control Valve Z2S/Z2FS/SV/SL Series A6VM Series Piston Motors A2M Series Piston Motors 3A10VM Series Piston Motors Hydraulic pumps are the heart of every hydraulic system, and they feature many inevitable functions that help improve system performance. Pumps play an important role in converting mechanical energy into useful hydraulic power. You can find different types of hydraulic pumps used in different applications. The pumps are mainly classified into positive displacement pumps and non-positive displacement pumps based on the displacement. Non-positive displacement pumps produce a continuous flow. However, they did not prevent slippage by providing an internal positive seal. In positive displacement pumps, slip will be minimal. Most hydraulic systems adopt positive displacement pumps instead of non-positive type pumps. Here, we can discuss more details about positive displacement pumps. Positive displacement pumps are also called constant volume pumps due to their constant speed and flow. These pumps are self-priming and can be designed as non-sealing pumps. Positive displacement pumps are classified into rotary pumps and reciprocating pumps based on the motion of the pumping element. Gear pumps, vane pumps, screw pumps, lobe pumps, etc. are the subcategories of rotary pumps and diaphragm pumps, and piston pumps and plunger pumps are the subcategories of reciprocating pumps. Where are positive displacement pumps used? Low initial cost and low operating cost are the advantages of positive displacement pumps over other types. These pumps are suitable for high viscosity applications. The system will have a constant flow regardless of the variable pressure. In short, these pumps are used in applications where precise flow is required. Positive displacement pump applications include high pressure washing, spraying/wiping, water treatment, oil production, irrigation, fuel transfer and injection, beverage dispensers, etc. Apart from these, the chemical, food, healthcare, pharmaceutical and biotech applications industries are reaping the benefits of positive displacement pumps. How does a positive displacement pump work? Positive displacement pumps will have two sides, one with an expanding bore for fluid intake and the other with a diminished bore for fluid draining. When the suction side cavity expands, a constant volume of liquid will flow from the tank into the pump. Likewise, the trapped fluid is discharged when the cavity collapses/reduces. This is the working principle of positive displacement pump. We have two major categories of positive displacement pumps, reciprocating and rotary. Source: Rexroth distributor Prolonged shutdown of the hydraulic machine can easily damage system components due to wear, lack of lubrication, contamination, etc. If the system is not properly maintained during the shutdown period, the consequences will be severe and may lead to system failure. Also, while the system is restarting, the operator or service technician must perform certain checks. In this article, we can discuss the checks that need to be performed on hydraulic pumps during restarting after a prolonged shutdown. Hydraulic pumps are the most important component of all hydraulic machines with the function of hydraulic oil pressure. It is recommended that basic maintenance of hydraulic systems be performed at regular intervals to ensure long life and trouble-free operation. In addition, the checks that must be performed before rebooting are as follows. Check if the pump rotates freely: Keeping the pump idle for a long time will make it difficult for the centrifugal and positive displacement pumps to rotate freely. The procedure to rotate the pump includes locking the main motor, removing the coupling guard, and then rotating the shaft. Rust, contamination, or any other mechanical problem will prevent the pump from spinning freely or make noise when spinning. Under these conditions, do not force the pump to move, and check it by removing it from the machine. Use only a wrench to operate a positive displacement pump or other pumps that cannot be manually driven. Using a torque wrench will damage the pump. Check the condition of the coupling and mechanical seal: the coupling used to install the pump will provide smooth and uncomplicated operation and rotation of the pump shaft. It is necessary to check the condition of the coupling for signs of wear. Any foreign particles present in the coupling will be evidence of misalignment. Under these circumstances, check the alignment of the pump before restarting. The mechanical seal in the hydraulic system prevents leakage of hydraulic fluid. Also, checking these seals before rebooting will help detect system leaks and related infections. Check Oil and Lubrication Levels - The quality and quantity of hydraulic oil is critical to machine operation. Contaminants in hydraulic oil can easily damage system components when the oil is not tested before restarting. To detect contaminants in the oil, a sample is taken for testing and the properties of the oil are checked. In addition, all moving components of the system must be properly lubricated for safe and error-free operation. Check Hoses, Clamps, and Couplings - Inspect hoses, clamps, and couplings properly for tightness. Otherwise, it will cause leaks and related problems. Therefore, if you find loose connections, tighten them properly. Check hydraulic valves and filters: Filters will help prevent contamination. Before restarting, please check important filters such as suction filter, pressure and return, and replace dirty or damaged filters. Also check if the fuses are arranged in the correct starting position. Source: Rexroth hydraulic pump The Rexroth hydraulic pump exporter specializes in four product lines: Vickers, Denison, Rexroth A10VSO series, servo valves and proportional valves. Part of a series on the origins of each of the major hydraulic brands we offer, we focus on Denison Hydraulics in this article. Denison's high-quality flexible products have a reputation for standing the test of time and being particularly useful when applied to a variety of mobile and industrial applications. Denison has a long history of innovation, beginning with the emergence of hydraulics and continuing through tough economic times as a leader in new and versatile products. HPS' comprehensive line of Denison products includes pumps, motors, valves and servomotors/proportional parts of this power. These products continue to provide the versatility and quality needed to recycle year after year. Who is Denison? Denison Hydraulics Inc. It is owned by Parker Hannifin and is based in Marysville, Ohio. With revenues of approximately $180 million, the Rexroth pump manufacturer has 1,150 employees in North America, Europe and Asia. Denison Hydraulics serves the global market with reliable hydraulic equipment and systems for mobile, industrial, power, defense and marine applications. And while the manufacturer has gone through some tough times in its 120-year history, Denison remains the world's preferred choice of hydraulic products for applications that demand high performance, reliability and flexibility. Original origin Founded in 1900 in Delaware, Ohio as the Cook Motor Company, Denison manufactures heavy-duty industrial single-cylinder gasoline engines only. After World War I, Bill Dennison acquired the Cook Motor Company while the motor market was dying. But Denison had the idea ofdeveloping a machine designed to slowly move clay-filled wagons through the kiln. It was the first hydraulic machine and the beginning of a long history of innovation. The advent of hydraulics, called Hydraulics’ at the time, helped keep the company going through tough times. (If you have time, Google the word "Hydraulics’" and you might find some operable machines approaching their 100th birthday.) Cook Motor Company went into receivership and reorganized into Denison Engineering during the Great Depression. They continue to innovate with products such as the rail pusher and the "compact" power unit. Denison hydraulics: truly unparalleled quality Today, Denison's well-designed, competitive products are among the products that hold up well in the remanufacturing process and can easily be brought back to life with the help of HPS. Its impressive and successful 120-year history of innovation and longevity leaves no mystery as to why Denison is the preferred hydraulic brand worldwide, and the preferred choice here at HPS. Of the more than two million HPS Rexroth Motors on the shelf, Denison products continue to lead with high performance, reliability and flexibility that stand the test of time. Source URL:-https://rexrothdistributor.tumblr.com/post/691387051166269440/denisons-innovative-beginnings-are-shown-in-the There are generally three types of hydraulic pump structures found in mobile hydraulic applications. These include gears, pistons and blades. However, there are also clutch pumps, vacuum pumps, and dump truck pumps, such as Muncie Power Products' Dry Valve Pumps and Live PakTM. A hydraulic pump is a component of a hydraulic system that takes mechanical energy and converts it into fluid energy in the form of an oil flow. This mechanical energy is taken from what is called the main engine (rotational force) such as the PTO or directly from the truck's engine. With each hydraulic pump, the pump will be of either a single-rotor or two-role design. As its name suggests, the single-rotating pump is designed to operate in one direction of shaft rotation. On the other hand, a bi-circulating pump has the ability to work in any direction. Gear pumps For truck-mounted hydraulic systems, the most common design in use is a gear pump. This design has fewer moving parts, is easier to maintain, is more tolerant of pollution than other designs, and is relatively inexpensive. Gear pumps are fixed displacement pumps, also called positive displacement pumps. This means that the same volume of flow is produced with each rotation of the pump shaft. Gear pumps are rated for maximum pump pressure rating, displacement in cubic inches, and maximum input speed. Gear pumps are generally used in open center hydraulic systems. Gear pumps trap oil in the areas between the pump gear teeth and the pump body, move it around the circumference of the gear bore, and then force it out through the outlet port when the gears are engaged. Behind the copper alloy drive plates, or wear plates, a small amount of pressurized oil pushes the plates firmly against the gear tips to improve pump efficiency. Piston pumps When high operating pressures are required, piston pumps are often used. Piston pumps traditionally withstand higher pressures than gear pumps of similar displacement; however, there is a higher initial cost associated with piston pumps, as well as lower resistance to contamination and increased complexity. The equipment designer and service technician must understand this complexity to ensure that the piston pump operates correctly with its additional moving parts, stricter filtration requirements, and stricter tolerances. Piston pumps are often used with truck-mounted cranes, but they are also found in other applications, such as snow and ice control, where it may be desirable to vary the flow of the system without changing the engine speed. A cylinder block containing pistons that move in and out is located inside a piston pump. It is the movement of these pistons that pulls the oil from the supply port and then pushes it through the port. The angle of the discontinuous plate, against which the sliding end of the piston slides, determines the length of the stroke of the piston. While the powder plate remains stationary, the cylinder block, which includes the pistons, rotates with the pump's input shaft. The pump displacement is then determined by the total volume of the pump cylinders. Fixed and variable displacement designs are available. Source URL:- https://rexrothdistributor.wixsite.com/website/post/types-of-hydraulic-pumps Related Blogs Rexroth hydraulic pump Rexroth hydraulic valve Eaton hydraulic pump Eaton hydraulic valve Rexroth a4vg A4VG Series Piston Pumps A10VG Series Piston Pumps PGH Series Internal Gear Pumps A4VSO Series Piston Pumps A7VO Series Piston Pumps A8VO Series Piston Pumps A2FO Rexroth hydraulic pumps Series PV7 Series Vane Pumps A10VO 52R Series Pumps A10VO 31R Series Pumps Atos PVL Vane Pumps Denison Vane Pumps External Gear Pumps Axial Piston Pumps Fixed Pumps Axial Piston Variable Pumps Open Circuit Dowty Gear Pumps Vane Pumps PV7 4WE6 Valves 3WH and 4wh Series 3WE6 Valves DB/DBW/DBDS Series ZD/ZDR Series Valves 2FRM Series Valves Directional Control Valve Z2S/Z2FS/SV/SL Series A6VM Series Piston Motors A2M Series Piston Motors 3A10VM Series Piston Motors |