what is a 2 stage hydraulic pump brands

Hydraulic pumps convert mechanical energy into fluid power energy. All hydraulic pumps are positive displacement which means the outlet flow is sealed from the inlet flow. A small amount of fluid is designed to leak internally to lubricate and cool the internal components of the pump. The only function of the pump is to produce flow in a system. Bailey International, LLC provides a wide range of pumps and accessories including clutch pumps, dump, gear, jaw couplers, mounting brackets, pistons, PTO, vane and two stage pumps.

This 2-Stage pump fits a wide variety of log splitters and outdoor power equipment and works in both horizontal and vertical orientations. The inlet (suction) port is 1" NPT and the minimum suction hose inner diameter (ID) is 1-1/4". The inlet barbed fitting is not included but is available separately. Use a 1-1/4 ID Suction Hose and 3/4" ID high-pressure hose.

Rated for up to 3,000 PSI at 3,600 RPM, this pump can power log splitters from 5 to 37 tons, depending on the inner diameter of the hydraulic cylinder. It features a fast cycle time by moving quickly when unloaded.

Be sure to use AW-32 10-Weight (ISO 32) or AW-46 20-Weight (ISO 46) light hydraulic fluid. This pump is not designed for use with “universal” or "tractor" transmission oil, such as "303". The use of incorrect fluid may damage the pump and void the warranty.

Make sure the hydraulic fluid reservoir is not below the pump to ensure a sufficient flow of fluid to the pump. The hydraulic fluid reservoir should have a capacity of at least 12 gallons to allow sufficient cooling. Suction-side filtration should be no finer than 150 microns. The use of a 10-25 micron filter on the suction side of the pump is too restrictive and will cause failure.

We recommend using an L-style jaw coupling to connect the pump to an engine. Couplings and mounting brackets are available. You should use at least an 11.7hp 390cc engine to maintain 3,600 RPM under load.

This 2-Stage pump fits a wide variety of log splitters and outdoor power equipment and works in both horizontal and vertical orientations. The included inlet nipple requires a 1" inner diameter suction hose.

Rated for up to 3,000 PSI at 3,600 RPM, this pump can power log splitters from 5 to 35 tons, depending on the inner diameter of the hydraulic cylinder. It features a fast cycle time by moving quickly when unloaded. It automatically shifts to low-flow/high-pressure mode at 500 PSI.

Be sure to use AW-32 10-Weight (ISO 32) or AW-46 20-Weight (ISO 46) light hydraulic fluid or Dexron III automatic transmission fluid. This pump is not designed for use with “universal” or "tractor" transmission oil, such as "303". The use of incorrect fluid may damage the pump and void the warranty.

Make sure the hydraulic fluid reservoir is not below the pump to ensure a sufficient flow of fluid to the pump. Suction-side filtration should be no finer than 150 microns. The use of a 10-25 micron filter on the suction side of the pump is too restrictive and will cause failure.

The mounting flange on this pump has a 4-bolt, 2 inches on center, mounting pattern. The bolt circle is 2.85" and the bolt hole diameter is M8 (.344").

Northern Hydraulics offers a full line of 2-stage hydraulic pumps for your log splitters, compactors, and press-type applications. Haldex/Concentric pumps have a cast iron gear housing and are available in flows ranging from 9 GPM to 28 GPM. These 2-stage hydraulic pumps are designed for heavy-duty use and long cycle times. The Haldex brand assures you are getting top-quality, high-performing products. Northern Hydraulics replacement pumps also have a cast iron gear housing and are available in flows ranging from 5 GPM to 28 GPM. These log splitter hydraulic pumps are ideal for the recreational wood splitter user, as they are still a quality product, but offered at a much lower price point.

2-stage hydraulic pumps are used in motor-driven operations wherein a low-pressure, high rate inlet must be transferred to high pressure, low flow-rate outlet. Single-stage pumps are rated to a static max pressure level and have a limited recycle rate.

To achieve high pressure without a 2-stage unit, the drive engine would require significantly higher horsepower and torque capacity but still lack an effective cycle rate. Other hydraulic pump variants exist – such as piston pumps – but are expensive, making 2-stage units more feasible.

For example, a single gear hydraulic pump might be designed to generate a high-pressure output. Still, it will be unable to repeat a cycle rapidly due to a necessarily low flow rate at the intake. A 2-stage unit ensures consistent flow to increase cycle turnover.

Compactors utilize a similar 2-stage process. High-pressure flow drives the compacting rod, while the low-pressure flow retracts the mechanism and feeds the high-pressure chamber for repeated impacts.

2. Once the first-stage pressure meets a certain pressure threshold, a combiner check valve will open and feed into the second-stage, small-gear unit – joining flows at relatively low pressure.

3. A load sensing pin will trigger the unloading valve to open and the check valve to close. The flow will be directed exclusively to the discharge port.

4. A small amount of fluid may feedback to a load sensing pin to measure the pressure at the outlet and signal lower flow rate in the first unit, lowering the pressure and providing the conditions for a cycle to repeat.

A piston pump operates according to variable displacement. Flow is determined by the angle of an internal slant disk attached to the pump shaft. Pump adjustments – like torque or horsepower limiters – allow piston pumps to emit a max flow rate regardless of pressure level.

In most cases, hydraulic piston pumps are an order of magnitude more expensive than gear-based pumps. Potential downtime and part replacement in high volume work conditions exacerbate price disparities further.

Chiefly: fuel and power consumption. A piston pump operating in high-pressure ranges will regularly demand the full horsepower capabilities of its associated drive engine – increasing the power utilization of the system.

Opportunity cost may also be considered when using a piston pump. Depending on the application (e.g., log splitting), work output can be heavily impacted by the cycle speed of the pump. Not only is a piston pump more expensive to peruse, it is also slower than 2-stage pumps.

Panagon Systems has specialized in manufacturing industry-standard and custom hydraulic assemblies for 25 years. Reach out to our team for a consultation on your specific operational and equipment needs.

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The 257-011, by MTE, is manufactured in the USA. It is commonly used by individuals building their own log splitter. It may also be used as a replacement pump for major log splitter manufacturers like MTD, Timberwolf, Champion, Ariens, and Swisher.

Aftermarket replacement for Ariens Gravely 03874000 Hi/Lo 2 stage hydraulic gear pump. 13 GPM @ 3600 RPM, 3 GPM @ 400 PSI and 10 GPM @ 3000 PSI. 3600 RPM rated speed, SAE 4 bolt flange mount. 1" metal tube inlet port with 1/2" NPT outlet port. 1/2" keyed...

VEVOR is a leading brand that specializes in equipment and tools. Along with thousands of motivated employees, VEVOR is dedicated to providing our customers with tough equipment & tools at incredibly low prices. Today, VEVOR has occupied markets of more than 200 countries with 10 million plus global members.

VEVOR is a leading brand that specializes in equipment and tools. Along with thousands of motivated employees, VEVOR is dedicated to providing our customers with tough equipment & tools at incredibly low prices. Today, VEVOR has occupied markets of more than 200 countries with 10 million plus global members.

This is an excellent replacement pump for log splitters, hydraulic presses, snow plow power units and a variety of other agricultural power equipment. Mounting Positions: Horizontal & Vertical This two-stage gear pump provides faster cycle times with an over-all higher pressure rating, so you can squeeze every bit of power out of your equipment.

The motor is built to last, and the tank has been specifically designed to not crack & leak under harsh conditions. Its high-quality starter ensures long life and a fast-starting each time.

This log splitter hydraulic fluid constructed with high-quality oil suck pipes, which needed to be cleaned often, our pump work in a low-noise condition.

This hydraulic pump is equipped with other hydraulic tools that can carry out lifting, pressure type, elbow, bending row, straightening, cutting, assembly, demolition and many other works. Reduce labor intensity.

Used in applications where extending a hydraulic cylinder is needed, truck tailgate lift, RV leveling, scissor lift, dump trailer, lift truck, snow plow, aerial platform, road signs, material handling, wheelchair lifts, etc.

Brand new 19GPM, 2 stage hydraulic replacement pump for log splitters. Fits many different applications, including newest models sold at Tractor Supply Co.

- The 2-stage pump can give you faster cycle times and higher possible pressure with a small engine. Excellent for use on log splitters. 85% efficient.

- This 2 stage pump can give you much faster cycle times and higher possible pressures with a small engine. Excellent for use on log splitters. 85% efficient.

How does a 2 stage hydraulic pump work? Knowing the answer to this question means going back to the basics. This includes understanding that 2 stage pumps are usually called log splitter pumps. In terms of purpose, these pumps are an amazing way to expect better performance without worrying about an increase in the horsepower.

A 2 stage pump is often regarded as an excellent time-saver. This is because the pump is composed of two pumping parts, along with an inside pressure-sensing valve which works by cutting between the two. A section of the hydraulic pump creates the max gpm flow rate at a relatively low-pressure rate.

As mentioned, looking inside the housing of this type of pump will introduce you to two components – a huge volume pump, alongside its low volume counterpart.

What makes this pump unique is that it makes possible that a hydraulic system produces either high pressure or high flow, which can easily be powered using an engine of a moderate size. The usual log splitters come between 5 and 12 hp.

In contrast to single stage pump which is composed of a single dual suction impeller that is situated on both vehicle sides and giving volume to all of the vehicle discharges, the2-stage hydraulic pump features two suction impellers that work side-by-side.

With this in mind, it is the operator’s call whether more volume or more pressure is required. This can be done by choosing the right switch that is located on the panel of the pump.

In a standard log splitter, a log is placed by the operator on the splitter, shifting a directional valve so as to route fluid coming from the pump and into the cap end of the cylinder. Then, the smaller pump works by moving the piston rod at a low speed, and can still attain higher pressure in pushing the wedge to the log, splitting it.

Engine– The engine is typically a small 4-stroke gasoline engine. It works by providing power to the entire system. It is connected to the hydraulic oil pump. A regular log splitter has a 5-hp gasoline engine or a a higher horsepower such as a Briggs & Stratton engine.

Hydraulic Oil Pump – This component produces a continuous high-pressure oil stream, running to a valve. The usual splitter features a 2 stage hydraulic oil pump that is rated at a max of 11 gpm, at 2500 psi.

Valve – This part allows the operator to actuate the hydraulic cylinder, thus splitting a log. The valves work by applying forward and backward pressure into the piston. A certain type of valve is called “spool valve” because it looks similar to a spool of thread.

Tank – The tank is the component that holds the hydraulic oil which feeds the pump. There is also a filter that keeps the oil clean. It can also be found in the tank. A usual log splitter comes with a 3.5 gallon hydraulic oil tank.

It is also possible to speed up the log splitter. For this, you need to have a bigger hydraulic pump. As you also upgrade your pump, you may also have to upgrade the size of the tank. This will help in preventing fluid overheating. You may also want to increase the size of the hoses, as this will also help in accommodating the increase in the flow rate.

As such, controlling the flow rate of a pump requires setting the output pressure towards the point using the P-V diagram, allowing the pump to provide the flow rate desired.

2 stage hydraulic pumps are often seen in hydraulic systems. They work by allowing the passage of different substances right into the pump, as well as the other components that are in the system. The different aspects of working can be adjusted, such as the valve accuracy, pressure settings, and creating minor adjustments using tools that you can find at home.

Locate the adjustment screw that is situated at the back of the hydraulic gauge. For this process, you can use a flathead screwdriver in turning the screw. This step enables you to easily adjust the needle of the screw. When needed, you can also turn it into zero.

This time, take time in adjusting the pressure switch. This switch can be found at the back of the hydraulic gauge. The best tool for this step is a wrench, using it to loosen the nut on the switch. Turn the adjusting screw afterwards. The pressure switch may also be adjusted in stopping the pump as it reaches a given setting in the pressure. Turn it in a counterclockwise direction to decrease the setting for the pressure switch.

After adjusting the 2 stage hydraulic pump, you can then focus your attention on adjusting the pressure regulating valve. This valve is situated right beside the pressure switch. This can be done with a wrench, loosening the nut on the switch.

Afterward, turn the screw in a clockwise motion to increase the setting for the pressure. Note that the switch needs to be adjusted to make sure that you can achieve a pressure differential of around 300 psi.

How does a 2 stage hydraulic pump work? As mentioned earlier, this equipment is truly a life saver and very effective. It contains two sections for pumping, along with an internal pressure-sensing valve, cutting over between both. A section creates the maximum gallon per minute flow rate at a low pressure. Among the uses include drawing the piston back from a log after splitting the log. Drawing it back to the cylinder requires little force, and should be done fast, so as to expect the best possible flow rate at a lower pressure.