World Class Numbers?
Blog reader Darrin wrote and asked:
Do you have any up-to-date sources for “word-class” numbers for lean metrics like % of Leadtime that is wasted, % yields, etc.?
I know I've seen numbers for benchmark “% value added time”, etc. but don't have the numbers ready, nor am I sure if the numbers are current. A google search turned up nothing but firms willing to do benchmarking studies.
Does anyone have any ready references (from lean books, articles, journals, etc.)?
Thanks for compensating for my laziness!
I've never fixated on the benchmark numbers, since I've always tried to set the bar against perfection, or as close as we can get. I know nobody fully eliminates non-value added time completely, but you can get it pretty low. In each of my lean endeavors, we always try to estimate where we can get based on our particular process and our analysis of the current state and expected improvements.
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