. .

Thread: Orac conversion

  1. #1
    Hi, I am partway converting an orac lathe to Mach3. However I am having a bit of a problem finding suitable motors for the axis. So far it looks like a nema 34 size motor fits, but the only ones I have found have all been 8 wire, I need 4 wire motor. The original shalf dia is 9.5mm, I can increase the diameter of the motors belt pulley a bit, but think that the nema 14mm shalf maybe pushing it a bit. So what motors have you used to replace the originals ones. Thanks.

  2. #2
    m_c's Avatar
    Lives in East Lothian, United Kingdom. Current Activity: Viewing Forum Superstar, has done so much to help others, they deserve a medal. Has been a member for 9-10 years. Has a total post count of 2,709. Received thanks 328 times, giving thanks to others 8 times.
    8 wire motors can be wired to use 4 wire.
    I'd guess the old shaft diameter is more likely to be 3/8" (9.525mm).

    Suitably geared Nema 23/4 motors will likely give better performance than Nema 34, but sometimes the convenience of not having to adapt mountings makes the larger motors simpler to fit.
    Avoiding the rubbish customer service from AluminiumWarehouse since July '13.

  3. #3
    Thanks m c for your reply. I can easily make the adapter plates, but I think the shelf’s would then be a bit short, will take a look at nema 23 thanks again

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Centroid Acorn Orac ATC conversion
    By Steve_p in forum Denford Lathes
    Replies: 4
    Last Post: 21-05-2020, 06:12 PM
  2. WANTED: Denford Orac old electronics
    By matoxx in forum Items Wanted
    Replies: 2
    Last Post: 27-07-2016, 06:55 PM
  3. Orac lathe to Mach3 conversion advice/direction please
    By Hunter in forum Lathes, Lathe Rebuilding & Conversions
    Replies: 1
    Last Post: 18-08-2014, 09:36 PM
  4. RFQ: Spindle for a Denford ORAC
    By rnr107 in forum Projects, Jobs & Requests
    Replies: 0
    Last Post: 07-11-2012, 05:20 PM
  5. Orac lathe
    By phill05 in forum Milling Machines, Builds & Conversions
    Replies: 4
    Last Post: 13-07-2012, 09:05 PM

Bookmarks

Posting Permissions

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