On 2 April 2018 at 15:23, Marius Liebenberg <mar...@mastercut.co.za> wrote:
> The spindle in the picture is what is currently fitted to the machine and I > would like to refurbish and use it. The question I have is what RPM will I > be able to run the spindle seeing that it uses these brass bearings? My Rivett lathe is good for 1600rpm and has similar bearings. Your bearings look smaller, and therefore can go faster. The internet says: "Depending on material max shaft speed 1.25 to 5m/s (non leaded bronzes, up to approx 2.5m/s)" If the shaft is 25mm dia then 2.5m/s = 31 rps = 1900rpm. (the extremes give 950 to 3800 rpm.) -- 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, 1916 ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
