On Thu, 7 Jul 2022 at 21:48, Jon Elson <el...@pico-systems.com> wrote:
> Doing some calculations on that, I get that 30A (peak > rating) will get 5110 Lbs linear force on every axis. I > guess this is needed to get good acceleration on the XY axes > due to mass of table and saddle, but that seems VERY > dangerous to the spindle bearings. I think you might be underestimating the bearings. If we assume that they are 40mm bore angular contact bearings: https://simplybearings.co.uk/shop/p20530065/UKF-719USS40A21I1L-Super-Precision-Angular-Contact-Spindle-Bearing-40x62x12mm/product_info.html Rated dynamic load (for a single bearing) is 10,800N or 2500lbf. So you wouldn't want to go to 5000 bushel-cubits[1] very often, but it's not orders of magnitude out. [1] Don't bother, it's not dimensionally correct, -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1912 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
