On 01/24/2017 10:03 AM, [email protected] wrote: > Don't servos need a lot of reduction to get the torque up? Gearboxes always > bring backlash into the system. Low backlash boxes are lots of $$$. > Toothed belt drives don't add backlash, until the belts are badly worn. (On a hobby system, you will NEVER wear them out.) No, you don't need much reduction, and with a suitably-sized motor, no reduction is needed. Note that stepper motors are rated on holding torque, and they will not even produce that much when running at low speeds. Servos draw no current at no load, and can stay cool so they have a reserve or peak torque available. The torque peak can often be 4 - 6 X the continuous rated torque. So, a motor rated at 100 Oz-In continuous could easily deliver 400 Oz-In peak for a few seconds.
Jon ------------------------------------------------------------------------------ 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 [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
