Page 3 of 4 FirstFirst 1234 LastLast
Results 31 to 45 of 59
  1. #31
    Join Date
    Dec 2007
    Location
    Melbourne
    Posts
    1,628

    Default

    240v. 3/4HP. 10Amps 1450rpm
    …..Live a Quiet Life & Work with your Hands

  2. #32
    BobL is offline Member: Blue and white apron brigade
    Join Date
    Feb 2006
    Location
    Perth
    Posts
    7,183

    Default

    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.

  3. #33
    Join Date
    Dec 2007
    Location
    Melbourne
    Posts
    1,628

    Default 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

  4. #34
    Join Date
    May 2011
    Location
    Murray Bridge S Aust.
    Age
    71
    Posts
    5,945

    Default

    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?
    Kryn
    To grow old is mandatory, growing up is optional.

  5. #35
    BobL is offline Member: Blue and white apron brigade
    Join Date
    Feb 2006
    Location
    Perth
    Posts
    7,183

    Default

    I only have 1/2HP on my Hercus but I thing 3/4 would be handy.

  6. #36
    Join Date
    Nov 2007
    Location
    melbourne australia
    Posts
    3,228

    Default

    Quote Originally Posted by BobL View Post
    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.
    Aren't you forgetting power factor Bob? A PF of 0.8 would improve the efficiency to around 60%.
    Chris

  7. #37
    BobL is offline Member: Blue and white apron brigade
    Join Date
    Feb 2006
    Location
    Perth
    Posts
    7,183

    Default

    Quote Originally Posted by jack620 View Post
    Aren't you forgetting power factor Bob? A PF of 0.8 would improve the efficiency to around 60%.
    Yeah I do that every time

  8. #38
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
    Posts
    6,440

    Default

    Quote Originally Posted by KBs PensNmore View Post
    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?
    Kryn

    Hi Kryn,

    Bang a treadmill motor on it ! DC, variable speed and reversible if you want to.
    Oh almost forgot... Cheap
    Best Regards:
    Baron J.

  9. #39
    Join Date
    May 2011
    Location
    Murray Bridge S Aust.
    Age
    71
    Posts
    5,945

    Default

    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?
    Kryn
    To grow old is mandatory, growing up is optional.

  10. #40
    Join Date
    Dec 2007
    Location
    Melbourne
    Posts
    1,628

    Default

    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

  11. #41
    Join Date
    May 2011
    Location
    Murray Bridge S Aust.
    Age
    71
    Posts
    5,945

    Default

    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
    Kryn
    To grow old is mandatory, growing up is optional.

  12. #42
    BobL is offline Member: Blue and white apron brigade
    Join Date
    Feb 2006
    Location
    Perth
    Posts
    7,183

    Default

    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.

  13. #43
    Join Date
    Nov 2012
    Location
    Mid North Coast NSW
    Posts
    422

    Default

    Quote Originally Posted by DSEL74 View Post
    ALDI All in One interior/ Exterior Metal paint Horizontal Mill Issues
    Aldi had a metal paint a few years ago that was brilliant. I used it on handrails etc outside my place ages ago and it's still good....but...bought some recently and found out it's now water based.....and it's absolute crap ...take it back and get a refund, I did.

  14. #44
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
    Posts
    6,440

    Default

    Quote Originally Posted by KBs PensNmore View Post
    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?
    Kryn

    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.

  15. #45
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
    Posts
    6,440

    Default

    Quote Originally Posted by BobL View Post
    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.

    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.pdf
    Best Regards:
    Baron J.

Page 3 of 4 FirstFirst 1234 LastLast

Similar Threads

  1. CNC'ing my mill - electrical issues
    By j3dprints in forum METALWORK GENERAL
    Replies: 9
    Last Post: 8th Apr 2018, 04:11 PM
  2. Horizontal Mill
    By shedhappens in forum METALWORK - Machinery, Equipment, MARKET
    Replies: 3
    Last Post: 25th Sep 2017, 06:49 PM
  3. Can you identify this horizontal mill?
    By lgftsa in forum ANTIQUE AND VINTAGE MACHINERY
    Replies: 2
    Last Post: 5th Sep 2016, 08:03 PM
  4. Horizontal mill, what make is this one???
    By Dave J in forum METALWORK GENERAL
    Replies: 20
    Last Post: 22nd May 2012, 08:15 PM
  5. Assessing old horizontal mill
    By Bryan in forum METALWORK GENERAL
    Replies: 15
    Last Post: 6th Dec 2010, 04:29 PM

Posting Permissions

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