Large diameter threaded rods - where to buy? - Page 2
Close
Login to Your Account
Page 2 of 2 FirstFirst 12
Results 21 to 29 of 29
  1. #21
    Join Date
    Dec 2016
    Country
    NETHERLANDS
    Posts
    13
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    2

    Default

    Machinefabriek hardewijk in the Netherlands has capabilities up to 6 meters and 120mm diameter.
    Maybe they have a solution for your needs
    Acme Thread - Machinefabriek Harderwijk B.V.

    And there are several german companys with those capacities also. So why search in us or china? Germany is much closer to you.

  2. #22
    Join Date
    Mar 2011
    Location
    Kansas
    Posts
    900
    Post Thanks / Like
    Likes (Given)
    108
    Likes (Received)
    254

    Default

    I don't see a mention of what screw thread, but 150ksi structural threaded rods are available up to 3" dia and 50' in length. Williams Form Engineering is one company that makes them, DYWIDAG Threadbar is another, along with Skyline Steel.

    Williams Form Engineering Corp. - 150 KSI All-Thread-Bar

    I don't know if they'd thread different threads on for you or not, but the 150ksi A722 bar threads on a Williams are a coil thread style, other manufactures have their own thread profiles as well.

  3. #23
    Join Date
    May 2010
    Country
    DENMARK
    Posts
    17,441
    Post Thanks / Like
    Likes (Given)
    3640
    Likes (Received)
    10590

    Default

    Quote Originally Posted by kram390 View Post
    Machinefabriek hardewijk in the Netherlands has capabilities up to 6 meters and 120mm diameter.
    Maybe they have a solution for your needs
    Acme Thread - Machinefabriek Harderwijk B.V.

    And there are several german companys with those capacities also. So why search in us or china? Germany is much closer to you.
    And that's why I wrote, "Country of origin isn't crucial so it can just as well be the USA as China or some other country." in the OP just to give two "opposites".

  4. #24
    Join Date
    Jan 2005
    Location
    The Netherlands
    Posts
    5,375
    Post Thanks / Like
    Likes (Given)
    225
    Likes (Received)
    1241

    Default

    Harderwijk whirls their threads
    Is that gonne work or do you need a rolled thread ?
    Big difference in durability
    A whirled thread needs a 100mm OD stock for a 100mm OD thread
    A rolled thread needs a smaller as 100mm OD So rolling ads another difficulty to the problem
    But if you make your own nuts you could just roll the treads from 100mm stock and see what the OD is you get

    Thyssen Krupp can provide you with the long stock


    Peter

  5. #25
    Join Date
    Jun 2006
    Location
    Near Seattle
    Posts
    4,409
    Post Thanks / Like
    Likes (Given)
    2492
    Likes (Received)
    1108

    Default

    There are very long lathes in the world, some still made, no? (Think of the lathes used in shipyards) Do they not have lead screws? (Likely acme of course....)

    Whoever makes/made such lathes would have a supply for very high length to diameter threaded rods, no?

    Put another way - @hanermo's post makes perfect sense, but very long lathes (and other machine tools) with very long lead screws/ball screws/etc exist - how do they solve this problem, and who makes those parts? Those answers would seem to inform the project Gordon has gotten involved in.

  6. #26
    Join Date
    Jan 2005
    Location
    The Netherlands
    Posts
    5,375
    Post Thanks / Like
    Likes (Given)
    225
    Likes (Received)
    1241

    Default

    The leadscrews on big lathes are screwed together The tread is coarse enough that you can match the threads
    But those threads do not see that much power

    Peter

  7. Likes bryan_machine liked this post
  8. #27
    Join Date
    Jul 2018
    Country
    CHINA
    Posts
    3
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    0

    Default

    Quote Originally Posted by Gordon B. Clarke View Post
    I've tried Googling but no luck. Where can long, large diameter threaded rods (around 100mm / 4" and up to 10m / 30 feet long) be bought?

    Country of origin isn't crucial so it can just as well be the USA as China or some other country.
    Why don't use a rod to turning the thread? 10meter will be a very long part. Even you buy it from China, how could you get it back?

  9. #28
    Join Date
    Jul 2006
    Location
    Hillsboro, New Hampshire
    Posts
    4,901
    Post Thanks / Like
    Likes (Given)
    1136
    Likes (Received)
    3416

    Default

    Quote Originally Posted by precisetechnic View Post
    Why don't use a rod to turning the thread? 10meter will be a very long part. Even you buy it from China, how could you get it back?
    Forty foot containers will handle a 10M rod.

    And I do appreciate your comment not simply being an attempt to sell a service.

  10. #29
    Join Date
    May 2010
    Country
    DENMARK
    Posts
    17,441
    Post Thanks / Like
    Likes (Given)
    3640
    Likes (Received)
    10590

    Default

    Thanks for all comments so far but at the moment I can't give more information than I have. I'll need customer permission. I hope in the not too distant future I can "tell the story" as IMO it will interest the most curious. I am very much involved and it will be a "hands on" experience.


Tags for this Thread

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
  •