Hi All,
Just checking some stuff with the panel.
I've had a Machine Mart 12 tonne - floor standing hydraulic press for some years now and a while back the pointer fell off the pressure gauge. The gauge is filled with Glycerine so I don't think I can just pull the thing to bits to re-fit the pointer?
I spoke to MM CS and they wanted the best part of the cost of a new press, just for a new gauge. ;-(
So, I can buy a pressure gauge easy and cheaply enough but I don't think I can get one that would be calibrated in tonnes (and kg/cm^2) like my existing ones is. I think that because I'm guessing the force the ram can exert in tonnes and the pressure seen behind the ram will be a function of the (size of the) surface area of the end of the ram and therefore there is no direct correlation of the two?
However, 12 tonnes on my existing gauge relates to 750 kg/cm^2 and using an online converter suggests that's also ~10668 psi?
So, am I simply looking for a replacement gauge that can cope with say
11,000 psi (or 14500 psi as the existing gauge goes to 16 tonnes) please?If so, I could then have a simple chart stuck on the press giving me the conversion from psi / bar to what it should be in tonnes exerted by the ram and kg/cm^2 etc?
Cheers, T i m