A few months ago I picked up a 1940's Royal 18 dill press in fairly rough shape. I've been using it ever since and love it. I switched the dying original motor to a 1.5 hp three phase motor and 1 hp VFD for immediate speed control (and sold the old motor to a collector!). My current problem is that it sounds frankly scary above 1500 rpm or so. My guess (and hope) is that it just needs new spindle bearings. Does anyone know what size bearings I need to source? I was having trouble finding the information online and I don't want to try pulling the spindle apart without replacement bearings on hand as there's a good chance I will end up damaging a bearing in the process.
