Thanks Thanks:  0
Likes Likes:  0
Needs Pictures Needs Pictures:  0
Picture(s) thanks Picture(s) thanks:  0
Results 1 to 5 of 5

Thread: Help with Motor

  1. #1
    Join Date
    Apr 2014
    Location
    Sydney
    Posts
    11

    Default Help with Motor

    Hey guys, I recently picked up the Hercus 260 lathe and now I have the motor out.

    It s a 550w (0.75hp) Crompton Parkinson 3 phase with 16mm (5/8") shaft. I have decided to get it converted from star to delta and use a VFD as many recommend here. I pulled it apart to clean it and found that one bearing is noisy, that is not a big deal, the main problem is the conversion to Delta. The wiring joins are totally buried inside the coils. I have cut a lot of the strings and tried to coax it out but to no avail. It is not like the others I have seen pictured that were easy to get to, if there is a join in there it is well and truly buried. I think I need to cut my losses and get another motor for those two reasons.

    I can get a 240V motor, but many say they are not smooth enough, I also want variable speed. So I am thinking of going 3 phase again, My quick search (of 0.75 to 1.0hp) shows nothing with 5/8" shaft. So I have come unstuck at the first hurdle. I am also unsure about the footprint and clearance to the 260's casting. Can anyone point me towards a good replacement motor for the 260 that fits?

    Thanks
    Karl

  2. #2
    Join Date
    Jan 2007
    Location
    Katoomba NSW
    Posts
    209

    Default

    Take the motor to a rewinder and get them to bring the star out and tidy up the bindings. Cheaper than a new motor and you know it will fit.
    Built: a Bench,a Desk,an Archery Display,

    Those were the droids I was looking for.

  3. #3
    Join Date
    Nov 2005
    Location
    adelaide
    Posts
    597

    Default

    yep go to a motor rewinder take a 100 dollars and it should get you a motor with delta winding connections and probably new bearings
    john

    ive done the change motor thing and it usually involves cutting bits from the motor housing

  4. #4
    Join Date
    Oct 2011
    Location
    Sydney, NSW
    Posts
    1,249

    Default

    Hi Karl,

    My Hercus mill has a 3 phase motor which I took to Austins at Lidcombe, they rewound it or rewired it for $80, suitable for a VFD and mains power.
    My 260 has a single phase which I converted from 3 phase and I regret doing it.

    Ben

  5. #5
    Join Date
    Apr 2014
    Location
    Sydney
    Posts
    11

    Default

    Thanks for the advice guys, I have a couple of avenues to chase up now. Good to know my choice to stay with three phase is a good one.
    K

Similar Threads

  1. Replies: 7
    Last Post: 10th Mar 2014, 07:26 PM

Tags for this Thread

Posting Permissions

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