So I have a Grizzly bench top and it currently has a 5/8" max chuck and I am thinking that I can just get a 1/2". It might even save a few bucks to get the 1/2". I will probably never have to chuck a 5/8 because I do not do any milling which as as far as I can tell is the only reason to have one. Main reason for getting a new chuck/arbor is that the one I have looks slightly off track and has a slight wobble,just purchased this press used of course. TIA

Also a side note and worth extra credit for a response is that I went to change speeds and the first belt was way to tight and very hard to change being no visible way to release tension. I will take off and measure to check length. Again thanks.