Quote:
Originally Posted by Jon Stratis
Did you miss the part where the OP said turning his shaft to round won't work for his application?. That basically means McMaster bearings won't work and he's "stuck" using commercially available hex bearings.
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Here is an old trick.... get a bearing that fits a 5/8 shaft, get a bushing that is 1/2 ID and 5/8 OD. Broach the bushing, and put it inside of the bearing. Now you have a simple hex bearing.
The one major issue with this is that I have not found a 5/8 shaft bearing with a 1.125 OD, but if that doesn't matter to you this is a good stand in solution, that many teams used to used before hex bearings were common.
On a side note, I also have been meaning to ask what the specs of the hex bearings are, both in RPM, load, and rated life. We have some that during prototyping (spinning at only moderate speeds) seemed to get really loose quickly, I assumed it was either an old bearing or we were beyond the spec. We changed the design, but it would be good to know for the future.