Trunnion ram bearing fix

[TomG]

I would use a 1" dowel pin and shrink fit that sucker into the plate. A 1" hole in steel will expand .00065" per 100º so you can easily get a .003"-.004" interference fit. Heat the plate up to 1000ºF with a torch and the pin will drop right in and essentially become one piece forever. You could even throw the pin in the freezer and get a little extra assembly insurance. You'll need to quench it as soon as it's assembled though to keep from drawing the hardness out of the pin.

Tom