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Re: hydraulically driven snowblower

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12-29-2013 05:42:37

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The tractor hydraulics would not have sufficient flow for your purpose. It pumps about 4.5 gpm at a pressure of 2000 or 2500 depending on the Pump in your tractor. You can use the hydraulic oil in the tractor, but you must return the oil straight into the hydraulic chamber using the connection under the seat on the l/h side, you MUST NOT return the oil through the oil filler Plug or you will overfill the transmission and possibly starve the Hydraulics. They usually use a Pump and Motor that operates at about 8 - 10 gpm and 2500psi pressure, but you don"t want anything less than this, but it can vary depending on how much you are trying to move.
Providing that you are not really making the Blower work hard, you shouldn"t need an oil cooler, you will be able to tell soon enough once you start working and if necessary pipe a cooler into the system. If you look at some manufactured blower and see just what HP motors and Pumps they use, it will give you a much better idea. Be sure to use Hydraulic Hoses that are big enough, make the return hose bigger than the feed and always use swept bends rather than elbows in the pipework or you will create a back-pressure in your Motor and blow the seals....John(UK)

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12-29-2013 06:06:16

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 Re: hydraulically driven snowblower in reply to John(UK), 12-29-2013 05:42:37  
All of the hydraulic driven blowers I work on use Sauer Sundstrand pumps and motors. These are variable displacement pumps and fixed displacement motors. Size 26 and 27"s. They pump about 60 gpm at 5k psi. They are driven by 625 horse CATs, 3406"s. Pumps and motors are not cheap,and then add hoses,a tank, cooler and some controls and you"ve got some money tied up.

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12-29-2013 08:07:11

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 Re: hydraulically driven snowblower in reply to mechanicfred, 12-29-2013 06:06:16  
Yes, I looked at Prince pumps and a 5gpm pump was $629! Real expensive. How about a gear box to run a driveshaft to the front?

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12-29-2013 09:35:10

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 Re: hydraulically driven snowblower in reply to Randyr, 12-29-2013 08:07:11  
If you want to drive from the Crankshaft, you won't need a Gearbox, you just run it at engine speed. You can get the Shafts etc from this site to drive your Pump John(UK)

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