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  1. M

    No nameplate on motor. How to get operating specs?

    Holy crap I'm an idiot. I have no idea how I missed that, considering I removed the motor from that damn door.
  2. M

    No nameplate on motor. How to get operating specs?

    Right. However, a 30amp circuit to the vfd should be more than enough.
  3. M

    No nameplate on motor. How to get operating specs?

    Just called Monarch and they were only able to provide me the rpm and power of the motor (1800rpm & 7.5hp). I suppose I can calculate current from the equation for 3 phase motors: power (kW) = (voltage)*(current)*(sqrt(3)) Calculating for current, I get about 13.5A...
  4. M

    No nameplate on motor. How to get operating specs?

    Yea, I emailed Monarch a few days ago. Haven't gotten back to me yet. I believe the last owner said it was 5 hp. Hmm, so judging by the manual for this vfd, it doesn't seem like I need much information for the motor, just the frequency, which should definitely be 60Hz...
  5. M

    No nameplate on motor. How to get operating specs?

    I don't have three phase power in my garage, so the vfd is for converting single phase to three phase.
  6. M

    No nameplate on motor. How to get operating specs?

    Hi all. I bought a Monarch series 61 13x30 lathe and am looking at wiring a vfd to it. Unfortunately, the motor does not have a nameplate, and I need the specs located on the nameplate to program the vfd. How can I go about getting this information without taking the motor into an electric motor...
  7. M

    My new Monarch 60/61 lathe

    What hp rating vfd are you using for this 7.5 hp motor? Also, could you let me know how you wired everything in? Did you follow some diagram online? I also have the same monarch but with everything wired in for 440v. Although I have rewired the motor for 240. I am just unsure how to wire the...
  8. M

    Rewiring 13x30 monarch model 61 from 480V to 240V

    I have not 100% picked out a VFD yet, but I plan on going with this one...
  9. M

    Rewiring 13x30 monarch model 61 from 480V to 240V

    I only have access to single phase 240V in my garage, so I think a VFD is the only way....?
  10. M

    Rewiring 13x30 monarch model 61 from 480V to 240V

    How do I get in contact with Mark? Do you know his username on here?
  11. M

    Rewiring 13x30 monarch model 61 from 480V to 240V

    So you're saying I won't need anything inside the original monarch electrical box here: because the vfd can handle all of it's functions? And then also to keep the safety D switch as a fuse safety between the motor and vfd, but just add a switch between the 240V single phase wall power and...
  12. M

    Rewiring 13x30 monarch model 61 from 480V to 240V

    I see. So I need to get 240v heaters. Where would I get them? I would imagine they are hard to come by for these old machines?
  13. M

    Rewiring 13x30 monarch model 61 from 480V to 240V

    Can you point out the heaters in my pictures.
  14. M

    Rewiring 13x30 monarch model 61 from 480V to 240V

    I am looking at rewiring the motor on my Monarch model 61 13x30 lathe from 480V to 240V, and there is no motor tag on the motor or anywhere inside the motor access door. Luckily, the wires were labeled though (maybe by the last electrician that touched the motor ... as you can see in one of the...
  15. M

    Gap between x-axis dials and table end bracket after reinstalling lead screw.

    Hi all. After reinstalling the x-axis leadscrew on my Webb mill (Bridgeport Taiwanese clone), there is now a considerable gap that is present between both dials and bracket assemblies. Every time I spin the handle counterclockwise the gap opens up as you can see in the video below: The...
  16. M

    How to remove model 61 motor.

    Hi all. Do I need to remove the motor on my Model 61 lathe in order to rewire the motor from 480V to 240V? If so, where could I find some instructions on removing it? Here is a picture of the lathe:
  17. M

    Monarch model 61 lathe TPI/Feeds dial won't rotate.

    Well, the culprit was a tiny 1/16 x 1/8 pin. You can see it sheared in half: [
  18. M

    Monarch model 61 lathe TPI/Feeds dial won't rotate.

    Also, where to position the dial when I finally go to put everything back together? The dial is numbered 1-11, and if we look at the tumbler plate J17 and J18 (pg 20 here: http://vintagemachinery.org/pubs/2103/18297.pdf) we can see there are 11 slots for the little arm inside to engage...
  19. M

    Monarch model 61 lathe TPI/Feeds dial won't rotate.

    Yup, I removed my cover and it looks exactly like that as well. Question: This J12 gear should rotate with the larger J13 gear, right? Because otherwise if it was just floating, it would not transfer rotation to the dial, right? Well, in my case the small J12 gear rotates independently of the...
  20. M

    Monarch model 61 lathe TPI/Feeds dial won't rotate.

    I removed the red dial (just a flat head screw) and went to rotate the knob without the dial on the shaft and the small shaft which holds the dial twitched just a tiny amount. Could it be just a sheared pin in this shaft to the indicator dial? Do you know where I could find drawings of the...

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