On 9/5/13 7:07 AM, Gregg Eshelman wrote: > On Thu, 9/5/13, andy pugh <bodge...@gmail.com> wrote: > > Subject: Re: [Emc-users] Servo motor watts VS torque? > To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> > Date: Thursday, September 5, 2013, 3:19 AM > > On 5 September 2013 05:40, Gregg > Eshelman <g_ala...@yahoo.com> > wrote: > > The old motors were 5.8 amp cont, 30 amp peak. Stall > torque 3NM cont. Max RPM 2400. Max voltage 140 DC > 140V * 30A = 4200W > 140V * 5.8A = 800W > 3Nm * 2400 rpm = 750W > > You probably want at least 750W motors, geared to suit any > difference in nominal motor speed. > > My small knee mill seems pretty reasonable with 750W > brushless servos. > Though I suspect that I am limited by software commutation > at that top speed end. > ----------------------- > > The Servo Dynamics SDF1525-12 is rated at 120 volts so I assume the motors > never saw 140 volts. Still nearly 700 Watts. Divide watts by 746 to get hp.
Under the heading "you get what you pay for", have you looked at the Teknic Hudson series? http://www.teknic.com/products/motor_sel.php# They are available in a variety of stack lengths and windings, and sold in the US by Bearing Engineers: http://www.bearingengineers.com/products/product.php?id=223 Bearing Engineers have app specialists who would be happy to talk with you. No affiliation, just looking into these for one of my projects. > ------------------------------------------------------------------------------ > Learn the latest--Visual Studio 2012, SharePoint 2013, SQL 2012, more! > Discover the easy way to master current and previous Microsoft technologies > and advance your career. Get an incredible 1,500+ hours of step-by-step > tutorial videos with LearnDevNow. Subscribe today and save! > http://pubads.g.doubleclick.net/gampad/clk?id=58041391&iu=/4140/ostg.clktrk > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Learn the latest--Visual Studio 2012, SharePoint 2013, SQL 2012, more! Discover the easy way to master current and previous Microsoft technologies and advance your career. Get an incredible 1,500+ hours of step-by-step tutorial videos with LearnDevNow. Subscribe today and save! http://pubads.g.doubleclick.net/gampad/clk?id=58041391&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
