two stage hydraulic pump adjustment for sale

All of Hytec’s electric/hydraulic pumps are two-stage, continuous pressure (demand) pumps that contain all the necessary controls and circuitry for powering any single- or double-acting, continuous pressure workholding system. They contain a pressure switch and pressure regulator, and each is infinitely adjustable throughout the operating pressure range of 1,000 to 5,000 psi. An internal safety relief valve prevents possible damage from exceeding the maximum rated pressure.

The first stage provides high flow at low pressure to rapidly extend clamps and cylinders. The second stage piston pump builds and maintains pressure in the system at a preset level.

The pumps’ electrical controls include a RUN/JOG switch. When the pump is started in the RUN mode, it automatically starts and runs any time the pressure switch indicates the need for oil. When pressure builds to the switch setting, the pump stops until the next demand for oil lowers the pressure, causing the switch to start the pump again. The pump continues to cycle in this manner without operator intervention.

In the JOG mode, useful for set up and special applications, the pump will run only when the operator activates and holds the start switch. When released, the pump will stop immediately. If the pump builds pressure to the pressure switch setting, it will also stop. The pump cannot be forced to run after the pressure switch setting has been reached in either the RUN or the JOG mode.

Pumps having thermal overload protection have an integral “electrical shut-down” circuit which prevents the pump from restarting without manual intervention after either thermal overload or electrical service interruption. Motor electrical specifications are listed for each pump. For voltages and frequencies not listed, contact Hytec for more information.

The CBNA gear pump consists of a big displacement, low pressure pump and a small displacement, high pressure pump, a check valve as well as a relief valve. When working at the pressure lower than the relief pressure, both big and small pump output flow. While working at a higher pressure, only small pump outputs flow, which highly reduces the power consumption. The CBN pump is widely used in log splitter, press, machine tools.

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· 16GPM Powerful Pump: This hydraulic pump comes with a 25 GPM auto control detent valve. It features a 3600 RPM max rotating speed, 2250PSI valve setting along with a 16GPM high flow rate. It will bring powerful performance to your log splitter. Get ready to start cutting logs in half, in half the time.

· 1" Inlet & 1/2" NPT Outlet: Our log splitter pump is equipped with a standard 1/2" NPT outlet port ( for Minimum 8 HP engine) and 1" barb on the inlet port. It also has a 1/2" diameter shaft with a 3/8" key, allowing it to rotate clockwise. Quality you can trust, for unmatched results you can see.

· Sturdy ＆ Durable: The high-strength extrusion aluminum casing enables the pump to resist impact, rust, and high pressure. This sturdy structure can prevent leaks and ensure a prolonged service life.

· Simple Installation: This pump stands out with a 4-hole bolt-on design, and it allows for a direct and quick installation. Install the pump effortlessly, making your log splitting more effective and robust.

· Doesn"t Just Split Logs: The 2-stage hydraulic pump is excellent for log splitters, press, machine tools, and power units for snowplows. It has outstanding compatibility with many OEMs like Speeco, Huskee, Champion, and many more.

http://www.energymfg.com/pdf/16445x.pdfGood catch, I should have seen that. Now the interesting part is that the relief is preset 2000psi from factory and a max range of 2500psi. His engine should pull that without any serious bogging. Rereading the first post, he says it boggs out and stalls. I am now wondering if its the engine that is stalling, ( which is what I thought he was saying),or the cylinder that is stalling. I think that issue needs to be clarified before going any further. If the cylinder is what is stalling, and the engine continues to run, it could just be a matter of the relief being set to low, or to small a cylinder for the wood being split. If it is indeed not shifting into lowflow/high pressure, then he might need to adjust the pump to the the 650psi high flow/ low pressure. Remove the cap on the inlet side of the pump. Under the cap is a slotted screw. Turn clockwise to increase pressure. Turn the screw all the way clockwise to the stop and see if the engine can handle it. If not then back it out a little and try again. Run the engine full throttle and plan to play with the setting until you find the limit for your engine. You will find that the higher you can run the pressure on high flow side, the less the pump will kick down into low flow/high pressure and the faster your splitter will work. If you engine is actually already what is bogging, you may have to turn the screw counter clockwise to lower the unloader pressure.. It is best to use a pressure gauge, but you can do this by ear. If its killing the engine, just turn the screw out until it no longer kills the engine. You should adjust the relief setting on the control valvle first before trying to adjust the unloader valve on the pump. The load is what will cause the pressure to build, you can simulate a full load by fully extending or retracting the cyl, and the relief valve on the valve will activate. If it will not get to 2500 psi, then the valve pressure relief (on control valve) is not set, or you don"t have a load equivalent to 2500 psi. With a gauge installed, pressure will be at a minimum until you activate the lever on the control valve, Once lever is activated, pressure should climb on the gauge until the cyl is fully extended or retracted, at which point the pressure will climb rapidly to the relief setting. Watch the gauge, it should jump from the settings on the pump unloader valve (650psi), to the setting on the relief (2500psi). You may need to split a round or two to actually see the pressure spike as the spike can be pretty fast

I will just add, that I have never had to adjust the relief on the control valve or unloader relief on a pump that was new out of the box. Usually if the reliefs need adjusting, its because someone has already been messing with them. Usually the factory guys have it pretty close, not saying mess ups dont happen, just that it is unusual when it does. I also usually use large bore cyls and bigger hp engines than the minimums required. If you have the hp to pull the pumps and cyls that create more than enough force, the factory relief setting will usually take care of themselfs.

The HP-700 is a portable|tough|hydraulic steel pump that has two speed pumping pistons for rapid advance and an external adjustable pressure setting from 4,000 to 10,000 psi output. An internal oil bladder allows the tool to be used in any position. Our exclusive replaceable|by-pass cartridge is standard in the HP-700. Field repairs and pressure adjustments can be made in minutes. Use our PG-1 gauge for pressure adjustments.; NOTE: When using any of these high pressure tools|always use 10,000 psi rated non-conductive hose (NC-16 series).

For using the ITH-High pressure Hand lever pumps Lever-MAX there is no external power supply needed and no pneumatic air pressure is needed.  A distinction is made between the single-stage Lever-MAX and the double-stage Lever-MAX. Both designs are built for service jobs and provide a compact design, easy transport, and fast handling.

ITH offers the double-stage version to perform faster bolting procedures. The Mini version allows a shorter oil tank (less usable oil) therefore it is lighter. Also two-stage manual hydraulic pumps are optionally available.

Manual operating - ideal for service jobscompact design, double-stage development for fastest bolting proceduresno electric or air power supply necessarysecond high pressure coupling optional

To perform faster bolting procedures ITH offers a doublestage manual pump series. Use Lever-MAX 255 with highest flowrate per stroke for more faster and more efficient bolting procedures.Model versionsup to 3.000 bar:Lever-MAX Double Stage 235