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. ------------------------------------------------------------------------------ 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
