Odd threaded spindlenose?
Close
Login to Your Account
Results 1 to 5 of 5
  1. #1
    Join Date
    Nov 2019
    Country
    SWEDEN
    Posts
    3
    Post Thanks / Like
    Likes (Given)
    1
    Likes (Received)
    0

    Default Odd threaded spindlenose?

    Well i got this old lathe a few months ago but i just got it home. I have not been able to determine what make or model it is. I need a chuck backplate for this machine but people in a swedish forum have not replied so i am putting it here to.

    Unfortunatley my new mitutoyu caliper won`t show inches so these measurements is all metric.

    This is how my spindlenose looks.

    https://i.imgur.com/HE0GCyN.jpg

    There seems to be a slight taper to the thread since it differs 0,7mm from front to back (or just worn threads). The pitch is about 4mm.

    This is a few pics of the machine from my other thread.

    Old lathe - Album on Imgur

  2. #2
    Join Date
    Jul 2004
    Location
    Houston, TX USA
    Posts
    30,227
    Post Thanks / Like

    Default

    Measure it up, make or have made a "duplicate" so you have a plug gauge to use when making (or having made) a back plate

    Odd threaded spindlenose?
    Describes MANY old lathes

    About the only STANDARD threaded nose lathe makers used was their own idea

    The taper could be wear or intentional - or some of both

  3. #3
    Join Date
    Feb 2006
    Country
    UNITED STATES
    State/Province
    Indiana
    Posts
    12,973
    Post Thanks / Like
    Likes (Given)
    687
    Likes (Received)
    3926

    Default

    I noted that the Swedish language thread chart on the lathe seems to indicate that the lead screw has an inch pitch and you need a 127 tooth gear to cut metric pitch threads. That will require special effort to learn the procedures for threading.

    An inch lead screw on a lathe in Sweden does not prove that the lathe was made in England or other inch-using countries. My 1969 Volvo 164 had normal USA standard nuts and bolts except on the German-made brake and steering components, which used metric fasteners. It took two sets of tools to work on that car.

    Larry

  4. #4
    Join Date
    Jul 2004
    Location
    Houston, TX USA
    Posts
    30,227
    Post Thanks / Like

    Default

    ON EDIT OOOPPPPS - not paying close enough attention to posted dimensions. Please disregard comments below - thanks Larry!

    And with that in mind, perhaps the spindle nose is a well worn 1 1/2 - 6 Imperial

    Probably possible (even in Sweden) to acquire a standard 1 1/2 - 6 hex nut to see if it fit at all

  5. #5
    Join Date
    Apr 2013
    Location
    Damascus, MD
    Posts
    1,473
    Post Thanks / Like
    Likes (Given)
    4225
    Likes (Received)
    845

    Default

    I would suggest measuring the threads with the three wires method to see if it is indeed worn, or is tapered.

    Paolo

  6. Likes James H Clark liked this post

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
  •