Dockholidaiy, Victor gave you some good advice. This is exactly the same press that we use several times a year. Why pay big bucks when you don't use the tool every week? Evidence of our use is below. We were pressing the rim-base/trunnions for the breech-loading Krupp 1866 Howitzer firecracker cannon at the time. 52 were pressed in for that batch without any difficulty.
Welcome to the board. With the "Dockholidaiy" handle, are you a boating enthusiast?
Tracy and Mike
The .750' dia. drill bit sends out a big steel pig's tail chip. Since these big drill bits have a large drill point, the boring bar is used to flatten the hole right at .700" deep.
Here we are using the H.F. 20 ton press to push the Trunnion/Rimbase into the hole. No pics of turning these. Mike is way too fast and I handle the compressed air cooling and measuring. The holes are 1.0020", so the rimbase is turned to 1.0035. .0015 interference is plenty for a very tight fit. Two secrets here are put a 5 deg. bevel about .25" long on a one inch press-fit pin and use a very small pinch (about the size of a small ladybug) of lithium grease on that inserted bevel end. We use a 15 second dwell-time, at max pressure, to get the hdw. to the hole's bottom. If your cannon has some recoil, be sure to follow up with welding the rimbase to the tube. This is far superior to any other system. Firecracker cannon don't recoil, so welding is NOT necessary.
