having worked in the industrial automation industry for the past 25 years I have to say the stated rpm of 44,000 is a misprint just one too many zeros. rpm's of 4400 is more likely the case. a quick search of similarly priced saw blades yielded rpm's from 2400 thru 9300. as a ref. point gas turbine engines used to power electric generators operate at rpms 3000 thru 3600. opps gotta go