Hydraulic Pump

[snowbird]

I've got an Eaton hydraulic pump (26011) rated at about 21 gpm. I powered it with a 12 hp gasoline engine with a chain drive in another life. Will I be able to drive it from the extra pulley on my Bombardier SV200 engine and (2) will it be enough to run the hydraulics for snow grooming equipment (probably just a blade in front and lift wheels for the pull-behind groomer)?

 

[mtmogs]

Should tackle that duty with plenty left over.

 

[snowbird]

Thanks for the assurance. I also found a good resource at Force America (Iowa office) who also told me a v-belt would drive the pump (probably about a 1:1 speed ratio on pulleys) and that I could power at least 2 3 x 8 inch hydraulic cylinders. I might end up with trail groomer yet.

 

[mtmogs]

The standard hydraulic pump on my 406 unimog is driven by a v-belt. It is rated at 11 gpm at 180 bar (2610 psi). I think it is near 1:1 pulley ratio. The only time the belt ever squeals is when a cylinder reaches it's stroke limit. The pump is able to operate two 4" cylinders simultaneously (albeit slowly) to tilt the ton +1/2 backhoe on and off the back deck, operates a 4" plow frame cylinder to lift an 1800# county plow pretty quickly. So...if you have any trouble driving your 20 gpm pump with a belt then you can always downsize to an inexpensive, smaller flow gear pump and still likely get the job done.

Good Luck - Paul

PS You can have a look at these hydraulic calculators to gauge your requirements from a pump:

http://www.baumhydraulics.com/pages.php?pageid=4

 

[fogtender]

If belt squealing is an issue, you may be able to install a double sheeve pump pulley that would allow more transfer of power and better "Traction" with two belts verses one. If room is a factor, then you may have to live with a supply of extra belts...

 

[snowbird]

If belt squealing is an issue, you may be able to install a double sheeve pump pulley that would allow more transfer of power and better "Traction" with two belts verses one. If room is a factor, then you may have to live with a supply of extra belts...

Thanks for the advice. I've only got one available pulley on the engine crankshaft so I wouldn't be able to run a double pulley on the pump.

 

[snowbird]

The standard hydraulic pump on my 406 unimog is driven by a v-belt. It is rated at 11 gpm at 180 bar (2610 psi). I think it is near 1:1 pulley ratio. The only time the belt ever squeals is when a cylinder reaches it's stroke limit. The pump is able to operate two 4" cylinders simultaneously (albeit slowly) to tilt the ton +1/2 backhoe on and off the back deck, operates a 4" plow frame cylinder to lift an 1800# county plow pretty quickly. So...if you have any trouble driving your 20 gpm pump with a belt then you can always downsize to an inexpensive, smaller flow gear pump and still likely get the job done.

Good Luck - Paul

PS You can have a look at these hydraulic calculators to gauge your requirements from a pump:

http://www.baumhydraulics.com/pages.php?pageid=4

I appreciate the calculators and advice. It looks like my pump should have plenty of lift capacity since I'll probably use 3 inch cylinders and usually not run them simultaneously.