Hydraulic press build. Help

[jph]

I am getting the bits together to build a press.

i hope this is suitable for the pump.
Is the bright blue unit on the right of the motor a switch?
I ssume flow out is from this unit, where would be best to have the return pipe fitted? Thanks
John

 

[armalites]

You'll may find it's configured as single acting so fluid flows back the same route it came out. You may find you can take out one of the plugs on the pump block to feed a return. The blue unit will most likely be an electric valve actuator.

Configuration will depend on what type of ram you want to use, single or double acting. With a single load pressure or a spring closes the ram and returns fluid.With double acting you have fluid either side of the piston and you apply pressure depending on the direction you need to move.

Has that come out of a passenger lift?

 

[Carl Wilson]

It looks to be a gear pump with a simple pressure control ie spill back to tank. The bright blue thing is a solenoid operated valve I think.

 

[AndersK]

Take a close up on the symbols of that blue valve. There's a schematic on it that will tell the operation.
There should be port markings close to all fittings that will tell what to connect as well.

 

[pressbrake1]

If it came out of a lift of some kind return flow will be restricted for controlled drop which will render it a pita to use.
I found this out for myself

 

[AndersK]

The valve is a standard valve that can be replaced to give other functionality. Worth looking into if the pump is useful for your needs.

 

[jph]

I have a 2 way ram.
Sounds like I need to speak to the hydraulic shop that i will get to make up the hoses.
Thanks
John

 

[8ob]

Junk the solenoid valve on the powerpack and fit a spool valve to control the press up/down.

 

[carbon]

If the ram has only one port then its single acting, i can only see one in the picture.

 

[jph]

It has 2 ports.
Here is my spool valve.

 

[AndersK]

The valve is double acting but it should have two solenoids. The one you have looks too small to both push and pull the spool.

Either do as Bob says and use that other spool valve you have or get a second solenoid or replace the solenoid with a manual control.

The electric valve will also release the ram in neutral which usually isn't wanted on a press

 

[ukracer]

I recently grabbed this but don't have a clue if it will do what I want so I will be following with interest.

 

[pressbrake1]

As anders said you can see by the ctop symbol its double acting so there maybe a potential to fit another solenoid, though there maybe something different in the manifold.
I set up my big press(cylinder is 12” bore) with solenoid controlled valves operated by foot pedals so I have both hands free to be able to hold the piece of junk being worked on like radius arms etc until pressure holds it