Page 3 of 3 FirstFirst 123
  1. #21
    dsc's Avatar
    Lives in Lincoln, United Kingdom. Last Activity: 16-09-2016 Has been a member for 4-5 years. Has a total post count of 248. Received thanks 1 times, giving thanks to others 9 times.
    Rubbish:( the only motors I found off the shelf are roughly 300. I thought steppers should be cheaper, but a 12Nm stepper is around the 100 mark:

    and it needs a rather expensive controller (as it sucks 6Amps), which adds another 100 on top:

    Of course there's a final slap on the face with the DC supply, which comes to roughly 70:

    SPS407 Unregulated switching power supply.

    so all together it's close price-wise to the DC motor (and something that Jonathan mentioned before, although at that point I thought I'd be able to get away with the cheaper DM422C controllers).

    Jonathan, you've mentioned that if the speed is below the corner speed, the torque should stay at a reasonable level. How does one calculate the corner speed for a given motor? I'm asking because it might be better for me to use a 12Nm stepper 1:1, rather than doubling the speed to 600RPM and then using 2:1 to get the right spindle speed.


  2. #22
    In case you are still looking have you tried a servodisc/Pancake motor like they use on scooters and electric bikes? Might be a bit big but could be worth a look.

Page 3 of 3 FirstFirst 123

Similar Threads

  1. advise on drive shaft diameters
    By bmbaz in forum Machine Discussion
    Replies: 2
    Last Post: 15-05-2014, 09:46 AM
  2. Chinese 300W DC spindle - is the spindle shaft grounded?
    By HankMcSpank in forum Routers, Spindles & Controllers
    Replies: 43
    Last Post: 29-08-2013, 09:19 PM
  3. pulley fit on motor shaft - force it on?
    By dsc in forum Belt Drive, Pulleys & Timing
    Replies: 2
    Last Post: 09-08-2013, 05:11 AM
  4. WANTED: stepper motor with dual shaft (6mm dia) wanted
    By HankMcSpank in forum Items Wanted
    Replies: 1
    Last Post: 07-04-2013, 11:48 PM
  5. Simple Solution- Drive 1" Ball Screw Shaft with NEMA-23-Size Stepper Motor Shaft
    By LoveLearn in forum Gantry/Router Machines & Building
    Replies: 5
    Last Post: 08-02-2012, 12:52 AM


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts