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Thread: Horizontal Mill Issues
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16th Oct 2018, 10:37 AM #31
240v. 3/4HP. 10Amps 1450rpm
…..Live a Quiet Life & Work with your Hands
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16th Oct 2018, 12:20 PM #32Member: Blue and white apron brigade
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If you have a close look it's 10.4A @110V and 5.2A @ 230V
That's a pretty old motor 5.2A x 230V = 1200W input and only outputting 3/4HP (560W) output makes it a <50% efficient motor.
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16th Oct 2018, 12:57 PM #33
Horizontal Mill Issues
Is that what it’s saying. I wasn’t sure what all the extra numbers were about but it makes sense now you point it out. Yeah i’d Say it’s very old it had oilers on it which have been broken off, that’s probbably the remains of one in from of the plate in the photo. The mills pretty old too though.
I don’t imagine the machine is going to get a lot of use (low hobby use) so i’ll Run the motor until the blue smoke escapes.
I finished assembling the mill it self and made up two new keys one for the table handle and one for the spindle Morse taper. That one is interesting as it has the usual round ends but also a rounded over top.
As usual you end up with one piece left over you just can’t remember where it belongs?!???
…..Live a Quiet Life & Work with your Hands
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16th Oct 2018, 09:47 PM #34Most Valued Member
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That was very confusing, thanks Bob and Dale.
As I want replace the motor, what would be adviseable, 3/4 or 1/2 horse power, as a minimum?
KrynTo grow old is mandatory, growing up is optional.
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16th Oct 2018, 10:17 PM #35Member: Blue and white apron brigade
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I only have 1/2HP on my Hercus but I thing 3/4 would be handy.
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16th Oct 2018, 10:20 PM #36Most Valued Member
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17th Oct 2018, 12:41 AM #37Member: Blue and white apron brigade
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17th Oct 2018, 09:39 PM #38
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17th Oct 2018, 10:58 PM #39Most Valued Member
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To get a treadmill motor is nearly as expensive as a motor itself, plus how often would I need a reverse on a horizontal mill?
KrynTo grow old is mandatory, growing up is optional.
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17th Oct 2018, 11:00 PM #40
Kryn,
Treadmills are always in the hard rubbish.
Can you put up some photos of your vertical head please.…..Live a Quiet Life & Work with your Hands
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17th Oct 2018, 11:15 PM #41Most Valued Member
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Maybe in your area Dale, my area isn't as effluent. The only thing thrown out around here is stolen stuff that didn't sell at a garage sale
KrynTo grow old is mandatory, growing up is optional.
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18th Oct 2018, 11:25 AM #42Member: Blue and white apron brigade
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The problems with walking machine type DC motors is implementing them into machinery requires either, intimate knowledge about the walking machine's electronics and PS, or purchasing a variable DC power supply.
For example, the DC motor, control electronics and PS I pulled off a walker has a built in speed reset feature that I have not been able to get around within its own electronic control system. Every time it is stopped the speed goes back to zero so you have to manually reset the speed again. This would be a right PITA on most machines.
I think VFDs have many advantages for a mill.
Forward and reverse are standard, ability to setting acceleration and deceleration times, brake, built in jog feature, preset speeds can be had at a flick of a switch.
The one really useful feature that DC motors is more torque at low speeds has become somewhat less of an issue with the cost of vector control VFDs priced at almost the same as V/F only VFDs.
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18th Oct 2018, 03:55 PM #43Senior Member
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18th Oct 2018, 07:17 PM #44
Hi Kryn,
No I wasn't suggesting that you need to be able to run your mill in reverse, just that the motor from a treadmill was reversible, simply by swapping supply polarity ! The implication I was making was that which ever way the motor needed to run to suit your machine, changing it was easy to do.Best Regards:
Baron J.
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18th Oct 2018, 07:24 PM #45
Hi Bob,
Maybe this will interest you ! I did try to find the place that I originally downloaded the article from, without successes. So here is the pdf file.
Terrys_Dual_555_MC_2100_Driver_Circuit.pdfBest Regards:
Baron J.
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