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  1. G

    Motor advice for a machine tool

    My newer prototype has axis motor mounts with multiple bolt patterns to be able to mount NEMA 23, 24, and 34 motors; all you have to do is switch the coupler on the motor shaft. I've been planning for a while to use both steppers and the Teknic servos, my main problem is that this machine has so...
  2. G

    Motor advice for a machine tool

    Back here again a year and a half later for some updates. I ended up using a Turnigy 6374 motor with 149kv for the main turning spindle, and a 45mm 510KV motor for the milling spindle. Neither one is sensored. I used two 12v server power supplies in series to give them up to 24 volts and up to...
  3. G

    Motor advice for a machine tool

    Woah, just looked at the spreadsheet. 1400 watts of power output but 1000 watts of heat? I guess it was too good to be true. Is it some kind of design flaw in that specific motor, or is it just inherent that low KV motors will be less efficient? I may have to go with a larger speed reduction in...
  4. G

    Motor advice for a machine tool

    As far as torque goes, more is better. I'm using the assumption that 1 horsepower for 1 minute can remove 1 cubic inch of steel, or 3 cubic inches of aluminum. A 2kW cut at 2,000 RPM would mean about 9 N.m of torque, which is in the upper range of what I'll be doing.
  5. G

    Motor advice for a machine tool

    Thanks for the quick replies! The main turning spindles can either be belt driven or gear driven, either way there will probably be a speed reduction of about 50% to double the torque. There are a bunch of reasons I want to use a hobby RC motor to drive this machine, the obvious ones being cost...
  6. G

    Motor advice for a machine tool

    Hi, I'm making a mill-turn center that needs a lot of motors to work. I know it's slightly off topic from electric vehicles, but the mill turn center will be used to manufacture custom electric vehicles, so... Requirements; -The main spindles of the machine need to be able to run in a speed...
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