Quote:
Originally Posted by cxcad
.125 6061 and laser or waterjet cutting
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Sounds like you're getting a sheetmetal shop to do parts for you.
Lasers can cut press fits, or at least relatively close slip fits. I know teams like 971 laser their gearbox plates, although I'm not sure their bearings are press fits. Of course, YMMV based on the machine and operator.
Based on my experience, you're not going to be able to get a press fit off of a waterjet. If I had to do a press fit on a waterjet, it would likely need to be with a multi-axis headed machine, with an operator that knew his speeds and feeds, and after cutting a good number of test parts to determine the jet diameter, kerf, and feed rates for that material with the orifice being used that day. Navid Shafa is sometimes on these forums, and does waterjet R&D, so he might step in here with more info on press fits on waterjets.
Basically, given the machines your parts are being cut on, I'd plan on either mechanically retaining the bearing or reaming/sanding the hole to the right fit. If the parts come back as press fits, awesome, but I'd at least have a contingency plan unless they don't.