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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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What can this hydraulic pump be used for?
"Ignoramus27209" wrote in message ... I know very little about hydraulics. This pump has very many connectors and also an actuator. I am confused as to what it may possibly do. The original cost is over $8,000.00. It looks to be in a pretty sharp condition. http://igor.chudov.com/tmp/milsurp/hydraulic-pump/ Any ideas? Is it usable in civilian life? thanks i It looks to me to be a hydrostatic drive pump, or in other words a variable displacement piston pump. What it was for, or what it could be used for now is any one's guess. Without knowing the specifics of the pump it is hard to know what can be done with it. It may take some serious horsepower to run it, or maybe not. Greg |
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"Ignoramus27209" wrote in message
... | I know very little about hydraulics. This pump has very many | connectors and also an actuator. I am confused as to what it may | possibly do. The original cost is over $8,000.00. It looks to be in a | pretty sharp condition. | | http://igor.chudov.com/tmp/milsurp/hydraulic-pump/ | | Any ideas? Is it usable in civilian life? | | thanks I'll take a stab at it. The actuator engages the pump drive, so that the pump can be started and run remotely by electrics. That means the gear box is constantly in motion, not like a drive that can be disconnected, but more like a turbine engine gearbox. Perhaps this was for a GSE (ground support equipment) turbine engine? The pump is a two stage pump, with the first pump being a suction pump and the second stage being a pressure stage. Most pressure pumps don't suck very well and suction pumps can't pump up much pressure. The small hose fitting is a drain. I might be wrong because I can't figure out for sure which fitting does what. There is a low pressure inlet, which is the large blue hose fitting. The small hose fitting is a drain, most likely. Next, I don't think it's a hydraulic pump. I think it's an oil pump for engine or other machine lubrication. The first stage is the scavenge pump and the second is the pressure pump. If it were hydraulic the fittings would be stainless, not aluminum, and the hose fittings would be at least aluminum AN type fittings. Usable in civilian life? That's certainly possible. I guess it depends on what you do, what you need, and how good your imagination is. I'd see if ebay finds it valuable. Put it in the turbine engine parts category. If the end use sticker has FAA/PMA on it somewhere, it has aviation applications. |
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I did a search on the NATO Stock Number (NSN): see link http://www.iso-parts.com/Public/Sear...95-01-171-3477 5895 class is for miscellaneous communications equipment and the suppliers code indicates it from the signals warfare command center. It could be some kind drive/control unit for an antenna. What type I don't know. Someone else can take a shot at it. "Ignoramus27209" wrote in message ... I know very little about hydraulics. This pump has very many connectors and also an actuator. I am confused as to what it may possibly do. The original cost is over $8,000.00. It looks to be in a pretty sharp condition. http://igor.chudov.com/tmp/milsurp/hydraulic-pump/ Any ideas? Is it usable in civilian life? thanks i |
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"Ignoramus27209" wrote in message ... I know very little about hydraulics. This pump has very many connectors and also an actuator. I am confused as to what it may possibly do. The original cost is over $8,000.00. It looks to be in a pretty sharp condition. http://igor.chudov.com/tmp/milsurp/hydraulic-pump/ Any ideas? Is it usable in civilian life? thanks i It looks like a pressure compensated Cessna I used to see on cement mixer truck trailer axle assemblies. Similar to this one. http://tinyurl.com/5g279 http://www.surpluscenter.com/item.as...name=hydraulic They would run up to 4000 psi but pretty small displacement. Yours appear to be stacked for some special application. Steve |
#5
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In article ,
Ignoramus27209 wrote: I know very little about hydraulics. This pump has very many connectors and also an actuator. I am confused as to what it may possibly do. The original cost is over $8,000.00. It looks to be in a pretty sharp condition. http://igor.chudov.com/tmp/milsurp/hydraulic-pump/ Any ideas? Is it usable in civilian life? thanks i Looking at http://igor.chudov.com/tmp/milsurp/h...p/dscf0001.jpg That's three pumps, the right side is a variable displacement pump, and can move a lot of horsepower. The left side is likely a fixed displacement piston pump for implements. In between in a little plate will (well, should) be a small charge pump to keep the big one full. That little black elbow at the top of the photo ought to be the charge pump's intake. The black box is the actuator to vary the pump's displacement, but it's an odd way of doing it which I've never seen before. Military people.... The steel line across the top should be a case drain to let pressure from the big pump dump to the case of the little one. The fitting that's obscured behind the actuator at the bottom of the photo on the left end of the pump should be a case drain back to the reservoir. The tiny fitting at the back of the pump is just a drain to let out any oil that gets up behind the valve in the back of the pump. That valve is likely a relief valve. That arrangement is used pretty often on personnel lifts, small excavators, and other self-propelled equipment that only moves around intermittently. Though they usually use gear pumps as the implement pump rather than a little piston pump. You could probably take the implement pump off the back and repurpose it as a motor. Add a couple of relief valves and replace the actuator with just a lever and you'd have a spiffy little hydrostatic drive. Would make a damn nice go cart! If you play with it, remember that cleanliness is next to godliness with hydraulics. And hit up Vickers for any info on pressures and recommended hookup. -- B.B. --I am not a goat! thegoat4 at airmail dot net http://web2.airmail.net/thegoat4/ |
#6
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From the NSN, I found this comment in the Army Maintenance Data File (AMDF):
Navy COG: 9Y NAVY-OWNED STOCKS OF MATERIAL MANAGED BY THE ARMY WITHIN THE ARMY COMMUNICATIONS AND ELECTRONICS MATERIAL READINESS COMMAND. NAVY FLEET MATERIAL SUPPORT OFFICE. Which indicates possible Navy owenership of the basic unit. Steve "Ignoramus3417" wrote in message ... On Fri, 18 Mar 2005 23:36:44 -0600, Greg O wrote: "Ignoramus27209" wrote in message ... I know very little about hydraulics. This pump has very many connectors and also an actuator. I am confused as to what it may possibly do. The original cost is over $8,000.00. It looks to be in a pretty sharp condition. http://igor.chudov.com/tmp/milsurp/hydraulic-pump/ Any ideas? Is it usable in civilian life? thanks i It looks to me to be a hydrostatic drive pump, or in other words a variable displacement piston pump. Yes, that makes sense to me. The federal NSN information says as much, it is a piston pump with actuator. What it was for, or what it could be used for now is any one's guess. Without knowing the specifics of the pump it is hard to know what can be done with it. It may take some serious horsepower to run it, or maybe not. Greg Thank you. I will open up the actuator box to see if the motor is 400 Hz or 60 Hz. i |
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