💪 Enhanced Performance: OTC 4020 Air Hydraulic Pump - Next-Level Efficiency and Power Review

We used this as a pump replacement for a 30 ton press. It worked well initially, reaching 10,000 psi. After a few hundred cycles at 8000psi, problems began to reach full pressure. Now you can only get 7500 psi which is not enough for use. According to our observations, it probably needs to be rebuilt. We think this is an excellent device for applications that don't require medium to high performance.

Having used this model of pump almost every day in my job for 43 years, I can confidently say that this model of air pump is bulletproof of all major makes and models and many lesser known to the public is Come. The "Stinger” model from the same manufacturer, but imported, is far inferior to this model. I have used Enerpac, Blackhawk, Simplex and many other makes and models and none are as reliable and durable as the OTC 4020. I currently have 5 of these models in my business and rely on them…

Same pump as SPX but different label. The guts may be different, but I doubt it. I bought this to replace my SPX but I was able to get my SPX to work so I returned it unused. They say they're serviceable, but for the price of the parts, it's better to swap them out or see if you can get them working with something simple. The main piston has frozen over from sitting for a long time. I tried lubricating through the air intake but couldn't get enough fluid to release it. At the end the piston…