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Construction Equipment Tech Hydraulics, Electronics, General Engineering, ect in constr equip |
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#1
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Another hydraulic pump option
I found a furnace oil burner pump, that may work for larger model's, they can be had cheap on e bay. http://http://www.ebay.com/sch/i.htm...ntec+a2va-7116
The trade off is, they are on the large side of thing's. Here's a spec sheet for some of the model's, I have the Suntec A2VA-7116 It is 2-3 gallons per hour, vs the German pumps that are about 4.72 gallons per hour or 300 milliliter per minute if my math work's? http://http://www.suntecpumps.com/Suntecus/A7000.htm This pump is rated at 3450 rpm and 2-3 gph at 150-200psi. The shaft is 5/16 with a flat spot for set screw. They have 2 tank lines, 1 for oil supply, and the second one is a return line, I believe they have a built in relief valve. Now before some of you get excited about it's tooo big for 1:14 Tamiya truck's, yes I will agree! But for big dozer's, excavators, and other large equipment. Picture #2 is next to a Tamiya Flackpanzer Geppard tank transmission. The motor pictured, is a stock Tamiya 540 can. I'm planning on using my pump in a future dozer project, no screw drives now! This is the link, for the entire Suntec manual, with spec's. It is a very large file, beware! http://www.suntecpumps.com/Suntecus/...e%20Manual.pdf 81 pages! They also make a 1750 rpm model. Yes this will stir the pot a little bit, its the best cheap option, that I have found in 2 year's of looking! It ain't easy to find a happy balance. Hope this helps a few of us out? No it won't fit in a Bruder skid steer loader! Cheer's, Neil. |
#2
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Re: Another hydraulic pump option
Nice find Neil! I love the fact that seems like something I may find in someone's junk pile and be able to put it to use in something cool! Thanks for posting this...I have a new item to search for when I'm out and about...
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#3
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Re: Another hydraulic pump option
Neil,
Thanks for sharing the info on this pump and starting a new thread. Too bad they don't make a smaller model, but like you said it might work for bigger machines. I'm curious to see how well this pump performs, so I'll be watching this thread.
__________________
Brian Finster shavin' and smokin' a cigar?!?! |
#4
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Re: Another hydraulic pump option
I just bought a Marzocchi pump on ebay cheap, it's 750 milliliter/minute @ 1,500 rpm, will go to 7,000 rpm. Will give more info if there is any interest.
Most of the hobby pumps appear to be 300-350 milliliter's/minute. The furnace oil pump in a previous post, Well I had to find a new conversion app for my phone, number's are off! Cheer's, Neil. |
#5
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Re: Another hydraulic pump option
That looks good to me! Direct drive with a planetary drill and your good to go in a bigger piece of equipment!
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#6
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Re: Another hydraulic pump option
Here is the pump I'm going to try in my shovel...but again it would have to be used in bigger models.....
http://www.princessauto.com/pal/en/Gear/22-GPM-Bi-Rotational-Pump-Motor/1220030.p |
#7
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Re: Another hydraulic pump option
3.785L = 1 US ga
What kind of power do these pumps require to operate?
__________________
Sharing knowledge is one thing that defies basic arithmetic logic --- the more you share, the more you get! Joe |
#8
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Re: Another hydraulic pump option
Joe, which pump do you want to figure with, and at what
Pressure. I have a new app on my phone, for calculating this stuff. Cheers, Neil. |
#9
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Re: Another hydraulic pump option
The 750ml pump you have pictured with the pop can, to run it up to 400psi would take how much power?
__________________
Sharing knowledge is one thing that defies basic arithmetic logic --- the more you share, the more you get! Joe |
#10
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Re: Another hydraulic pump option
Hey Joe,
That little pump is good for 2,760 psi, .069kw @ 3,000 rpm and 400 psi or 27.6 bar. Ok this app is great! I'll post a link to the spec sheet later. The pump I bought is magneto drive or sqaure tang. I'll be talking to the Marzocchi people in March At ConExpo. Hope to have some decent options. Cheers, Neil. |
#11
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Re: Another hydraulic pump option
This is the Marzocchi catalog, go to page 14 (the pdf page at the bottom of the screen)
http://www.marzocchipompe.com/system...25_ITA_ING.pdf I have the UK 0.5 D 0.50 pump, the closest one to 300 milliliter/minute is the 0.25 D 18 Cheer's, Neil. |
#12
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Re: Another hydraulic pump option
i can't see the links
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#13
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Re: Another hydraulic pump option
Is your "pop up blocker" interfering? Still works.
Cheers, Neil. |
#14
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Re: Another hydraulic pump option
Did you get a chance to try out the pump yet???
Now you need to find some small valves for controls... |
#15
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Re: Another hydraulic pump option
Not yet, I'm working on sourcing some larger size valves, while
I'm at Con Expo in March , less than 3 gpm. Will keep you in the loop! Cheers, Neil. P.S. My preferred scale is 1:8, that's why I'm looking at commercial Off the shelf products. Last edited by doodlebug; 01-08-2014 at 12:59 AM. Reason: More |
#16
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Re: Another hydraulic pump option
I have been thinking about using/trying some small pneumatic valves....they're not very costly but they are somewhat big.....and have a low pressure rating...or you just need bigger cylinders...LOL
KP |
#17
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Re: Another hydraulic pump option
Be careful of the pneumatic rotary valves. My father in-law machined a valve block for my Volvo that was very close to the rotary style that Princess Auto sells. At 30 bar you could barely turn the valves with pliers. Too much surface area for that kind of pressure.
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#18
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Re: Another hydraulic pump option
Quote:
If memory serves i think the rotary valves your father inlaw made were smaller than a penny... sorry - thinking out loud what about pressure release valves? are people making those? buying or ignoring that option? i would assume some adjustability would be nice ... i guess i have to learn something about spring pressure as well... at least making those on a lathe is not difficult... waiting on my motors from robotmarketplace ... once i get those i can start on mounts and drive train... might need to source some bevel or spiral bevel gears (i dont think the spiral bevels will be necessary or worth the additional cost though). |
#19
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Re: Another hydraulic pump option
Quote:
Last edited by RCP57; 01-08-2014 at 06:20 PM. |
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