[TheForge] hydraulic pump

Mon Mar 17 19:45:59 2003

Hey Dave,
The reason Jim Batson recommends the 2 stage vane pump is so that it can be
driven by 2 to 5 hp single phase motors.
I suspect that the fork lift pump is a single stage unit so it might  take a
larger motor to drive it.
You should check the pump for an id plate  This would identify the type of
pump and its flow rate ( about 6 gpm is ideal).
It is also critical to match the pump flow volume to the size of your
cylinder.
The optimum ram travel for general smithing is between 1 to 2  ips.
It is also possible to use compensated piston pumps and variable piston
pumps, but they are very expensive and the hose plumbing is different.
(They have an extra case drain hose).
I consider Jim's Hydraulics Primer a must read before you try to build one
yourself.
Chuck

----- Original Message -----
From: "Dave Brown" <[email protected]>
To: "TheForge" <[email protected]>
Sent: Monday, March 17, 2003 3:05 PM
Subject: [TheForge] hydraulic pump

> I was at the local scrap yard today and there was one of those small 3
> wheeled forklifts.  I forget the name, but there is a seeminly good
looking
> hydraulic pump in it that operates the lift.  Does any of you hydraulic
> folks have any idea if the pump from the forklift would be suitable for a
> hydraulic forging press?
>
> Dave Brown
> Heritage Smithing
> Green Bay, WI
> ABANA, UMBA, GoM, MODA, ARG
>
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