Dake 50H Hydraulic Press

[thecj3man]

I recently aquired a 50 ton Dake press at a used machinery auction. The only problem with the unit is that the gauge is broken out of the workhead. I have searched to the end of the internet trying to find what pressure the pump supplies but I cannot find it. Dake's manual does not tell either.

I want to get a gauge. A replacement tonnage gauge from Dake is 176$ , so I am going to get a pressure gauge from the local hydraulic store.

Does anyobdy know what pressure the pump supplies? Or the ram size?

Thanks
WAP

 

[TheGrooveking]

Reverse engineer it, take the tonnage of the press and then divide that bydiameter of the piston times (pi times radius squared) then you'll have the pressure. Allow for 10-20% more and your covered.

TheGrooveking

 

[Steevo]

You'll also need to know the pressure setting of your pump. If the pump puts out a max of say 2000psi, and the ram in the press is a 4" bore, then you would have a 25,120# max press force, or a "12 ton" press.
If it is a 50ton press, and has a 6" ram, the reverse math would go like:
50 Ton=100,000#
radius of bore = 3"
Pi=3.14
100,000/(3*3*3.14)=3538 = psi required to get 50 tons of force from the 6" ram.

 

[larry_g]

Force=pressure x area. So if you can figure the area of the ram as Steevo said then you can figure force (tonage) per unit of pressure in. Once you figure that then you can make a chart that converts the guage reading in psi to pounds force exerted by the ram.
So bottom line is you need to find out the ram diameter. Without the model number of the press I doubt that we can be much more help unless all dake 50t presses use the same ram.

lg
no neat sig line

 

[Outlawmws]

No need to exert yourself, most hydraulics run at about a peak of 10,000 PSI IIR.

Get a gauge at least that (you are unlikely to ever get it there) and be done.

(Then you can do the simple math of how many sq inches your ram is and make a table for tonnage...)

 

[thecj3man]

Does anyobdy know what pressure the pump supplies? Or the ram size?

I know how to calculate force and measure area. Does anybody know the piston size in a 50 ton Dake press?

 

[TheGrooveking]

Well the piston size is somewhere between the ram size and the outside diameter of the cylinder.

TheGrooveking

 

[rsanter]

just ask dake what the rating for the guage is

bob