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IndustryArena Forum > Mechanical Engineering > Linear and Rotary Motion > Oldham couplers for CNC - Nylon or Acetal disks?
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  1. #1
    Join Date
    Sep 2011
    Posts
    29

    Oldham couplers for CNC - Nylon or Acetal disks?

    Hello you extremely helpful bunch.

    I went to Ruland.com and ordered couplers, I got the 19.1mm OD version and I ordered 10 each of both the nylon and acetal disks:

    https://www.ruland.com/catalog/produ.../category/278/

    Anyone have any advice on whether to use the nylon or acetal disks?

    Steppers are NEMA 24 / 439oz.in / 3.5A driven at 48V
    Table is a 6040

    Thanks.

    Richard

  2. #2
    Join Date
    May 2005
    Posts
    3920

    Re: Oldham couplers for CNC - Nylon or Acetal disks?

    I'd go with Acetal myself.

  3. #3
    Join Date
    Apr 2003
    Posts
    540

    Re: Oldham couplers for CNC - Nylon or Acetal disks?

    I believe the Acetel is firmer resulting in less backlash but it's going to be microscopic. The specs for each type/item should list how much. Acetel has low friction and is very machinable and is more common for CNC uses. Depending on the machine, you most likely won't see any real differences between the two, especially for hobby use if the hub tolerances are pretty much the same.

  4. #4
    Join Date
    Sep 2011
    Posts
    29

    Re: Oldham couplers for CNC - Nylon or Acetal disks?

    Thanks coherent and wizard!

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