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View Full Version : Runout in machining


omada
Sep 4, 2008, 03:24 PM
what are possible causes/solutions to reduce/eliminate runout in machining a shaft.
Part is chucked with a tailcenter and steadyrest. I read previous post of the 30... 80 microns of that shaft. Could someone also define the value of a micron.

KISS
Sep 4, 2008, 06:25 PM
Something that you can relate to 0.0005" = 12.7 microns. That's 1/2 of a thousanth of an inch.

FlyYakker
Sep 30, 2008, 06:23 AM
Not sure you can "eliminate" runout - at least not economically on a mass production basis since that would imply perfection of each part. "Minimizing" runout, is a different thing.

Is "no runout" a real mating part or functional requirement (e.g. a gage)? Or is it an arbitrary dimensional requirement from the part designer not related to a real need. It's amazingly easy to dimension a part such that it is not feasible to produce.