Cartmann Posted March 20, 2021 Posted March 20, 2021 Recently got a PTF gauge. My 12 ton press can only get to around 14000 Psi the gauge. Does this seem right?? Thank cartmann
Carbon796 Posted March 20, 2021 Posted March 20, 2021 If your PtF gage is accurate. And the press is Chinese made, its probably right. Chinese manufactured equipment items ( like presses ) are somewhat common to be over rated. Or under performing, how ever you want to look at it. You can still get a lot of pyro work done with 7 tons of working force available.
Richtee Posted March 20, 2021 Posted March 20, 2021 Hire some young boys...that’s too heavy for me to help any more.
Cartmann Posted March 21, 2021 Author Posted March 21, 2021 This is the press I have. Strongway 12-Ton Hydraulic Shop Presshttps://www.northerntool.com/shop/tools/product_200641794_200641794 I guess if you want a true 12 ton press, try a better option. cartmann
SeaMonkey Posted March 21, 2021 Posted March 21, 2021 (edited) Did you determine the cross section area of the piston to calculate pressure to force at the load point? Adding a Pressure Gauge to a 20 Ton Hydraulic Jack Press Edited March 21, 2021 by SeaMonkey 1
Cartmann Posted March 21, 2021 Author Posted March 21, 2021 I did not find out the cross sectionI just used a ptf gauge form woodysrocks.com
Carbon796 Posted March 21, 2021 Posted March 21, 2021 (edited) Using PtF gage, reads the force produced by the press directly. But you still have to convert it for tooling size. While a "line pressure" gage must be calculated based on the hydraulic cylinders piston size. Then the tooling size also, just as above. You might try loading your PtF gage up to 5000psi or 10000psi and see if holds pressure over time. This will tell you if you, if you have a seal or check leaking. If you can still pump the jack. And you just can't gain above 14,000psi. Its probably just the sloppy fit or seal on the pump side. Or its low on fluid, it will pump very easily at this point, if this is the case. If the pump side is just "locked up". Part of Chinese items being built cheap. Is that everything is built undersized, to save money. The pump arm/levers are probably 1/3 to 1/2 shorter in length. Than you'd find on an real American made press, of the same rating. Edited March 21, 2021 by Carbon796 1
Cartmann Posted March 22, 2021 Author Posted March 22, 2021 I tried it at 3 different heights withing the working range.All the pressures held the at the same 14000psi. The jack just over rated and under delivering. Was still able to press some pucks. Thank for the help cartmann
BetICouldMake1 Posted March 22, 2021 Posted March 22, 2021 I have that same press. The pump failed completely on me after about a year. Replacement Enerpac type pumps are widely available. I opted to upgrade mine with a tie rod cylinder and 12V powerpack. That press is certainly middling quality but I still think it's one of the best values for someone just getting started if you don't have the funds for a better press, or the patience to save. I would just be sure to very carefully inspect and test everything when it arrives and don't hesitate to return/replace it if anything looks off. The big issue with most of these cheap tools is quality control. Northern Tool is surprisingly good about replacing damaged product.
Recommended Posts