Gas lance is what many refer to them as.
The portable pin press also works great as a portable press for anything else, we made a plate adapter for the end, so we can press bearings off of shafts in the field as well once the shaft is off whatever it is on. It was a bear to handle, but using a crane with a basket on the end of the cable, we hoisted it up over 80 feet to then hook it to a stuck bearing on the head shaft of a grain leg because we could get new bearings, but the not the holder the bearing was in, so we had to press it off the shaft far enough to cut the balls out of the bearing and not light the belt in the leg on fire, or start the corn in the leg on fire either. That took a slotted adapter we cut with a torch to fit on the end of the press so it slid over the shaft so we could then press the bearing out away from the housing about six inches or so, after we worked a half a day to get it away from the housing about an inch to fit in my cut adapter plate, wasn't pretty, but worked great once set up. Not sure the manufacturer even thought anyone would hoist a track press over 80 feet in the air in order to use it though.
The pump also works great to prelube and make sure all the oil galley's are open and working when we overhaul engines, just hook the port a power hose up to the oil galley on an engine once its assembled and flip the engine over, take the pan off and you can see as you start the power unit up, if all the rod and main bearings are lubing like they should, along with all the rockers, also done this a few times when engine in machines I've bought had too low of oil pressure, before tear down we flipped the engine over and took the pan off, hooked the port a power up and discovered that one of the oil holes for the spray lubers was too large, shooting a large diameter of oil stream and once fixed, brought the oil pressure back up to normal operating pressure again without having to overhaul the engine, [hence the reason why the prior owner sold the machine, he didn't want to overhaul it].
The air pump we use all the time on my shop press, we made a hydraulic cylinder holder that fits my press, used a junk long cylinder, think maybe 30 inches long or so that sticks up above the press and once in, we can then shove in one push, key way broaches all the way through and have a two way air operated hydraulic cylinder. We then made another adapter to fit a shorter larger bore cylinder to it for a standard press cylinder using the same air pump for the track press to power it, built a small sided platform for it to set on at one side of the press and also remove it to use with all the hollow bore cylinders I have, that way if someone is using one power unit, we can keep going with the second air unit that came with the track press setup.
Hydraulics are literally the best invention ever designed to save a person's back and body.
The only issue we've had with the air operated pump is when it gets cold out, the silencer screen and filter will frost over and plug up and it then the pump won't work, to remedy that, we just unscrew the filter/silencer and let it bark, but have to use ear plugs instead, also had it on a few occasions, where the air lines and pump itself would freeze up due to frigid weather and be unusable and then we'd have to swap out and go with the electric pump instead till warmer weather came back or else you need a space heater aimed close enough to the air pump to keep it thawed out and working, much like any air impact wrench.