Free 173 Best Homemade Tools eBook:  
Get 500+ homemade tool plans, tool build guides, ebooks, and much more.

User Tag List

Results 1 to 3 of 3

Thread: Broken Jacobs JT2 taper in favourite drill chuck.

  1. #1
    Supporting Member thehomeengineer's Avatar
    Join Date
    Nov 2017
    Location
    Berkshire UK
    Posts
    556
    Thanks
    559
    Thanked 1,421 Times in 308 Posts
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)

    thehomeengineer's Tools

    Broken Jacobs JT2 taper in favourite drill chuck.

    Hi All
    I was gutted when my keyless Albrecht drill chuck rolled off the marking off table and sheared the 2 morse taper from the Jacobs No.2 taper.
    I was left with the issue of removing the piece from the chuck. My first thought was to use the hydraulic press but the chuck was not hollow to allow this. There was not enough sticking out to use the standard taper wedge method to realise the taper. So plan C was put in to place to drill a hole and use oil to jack out, but the taper was hard as glass. Plan D make a taper wedge and weld a high tensile bolt to use against taper wedge. Unfortunately I had to move to plan E as the bolt weld broke off. So a piece of mild steel and the amps turned up on the welder the offending taper was extracted with no damage to the chuck. I must have 20 plus drill chucks scattered all over the workshop but this little keyless chuck is always my first choice. Anyway a new R8 taper to JT2 was purchased rather than the 2 morse taper. Cant wait to get it back in action.

    Broken Jacobs JT2 taper in favourite drill chuck.-bb2aeae2-8610-428c-8086-365f8c769a2b.jpeg Welded mild steel block to damaged taper and wedge.

    Broken Jacobs JT2 taper in favourite drill chuck.-f1ccbdf8-d705-4af8-b6d4-51b5cf2896c0.jpeg JT2 Taper finally removed.

    Broken Jacobs JT2 taper in favourite drill chuck.-dfd3d7df-46fa-405b-b807-0c92e0a7f30b.jpeg Offending taper welded to mild steel.

    hope this method one day might be useful to save your favourite chuck.
    Thank you for viewing
    The Home Engineer
    45 Best Harbor Freight Tool Modifications


  2. The Following 12 Users Say Thank You to thehomeengineer For This Useful Post:

    freddo4 (05-27-2020), high-side (05-29-2020), Home-PC (05-29-2020), jjr2001 (05-30-2020), Jon (05-28-2020), Okapi (06-01-2020), Paul Jones (05-28-2020), rebuilder1954 (05-30-2020), Scotty12 (05-27-2020), Seedtick (05-27-2020), Toolmaker51 (06-04-2020), Z2V (05-31-2020)

  3. #2
    Content Editor
    Supporting Member
    DIYer's Avatar
    Join Date
    Aug 2013
    Posts
    3,090
    Thanks
    551
    Thanked 1,312 Times in 1,184 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    500+ Homemade Tool Plans



    Thanks thehomeengineer! We've added your Broken Taper Removal Method to our Miscellaneous category,
    as well as to your builder page: thehomeengineer's Homemade Tools. Your receipt:



    Forge Build Guide


  4. #3
    Supporting Member Okapi's Avatar
    Join Date
    Mar 2013
    Location
    Switzerland
    Posts
    213
    Thanks
    318
    Thanked 115 Times in 71 Posts
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Okapi's Tools
    Always a good idea to show this technique on the site!
    When we have the problem with big conical parts we use a similar technique but with two opposite conical parts which make less friction than with one which apply the force on one side only, sometimes this technique can save a lot of money!!!


    Post your reply!
    Join 42,532 of us and get 500+ tool plans, tool eBooks, build guides, and much more.



    eBooks for Supporters

  5. The Following User Says Thank You to Okapi For This Useful Post:

    thehomeengineer (06-01-2020)

Thread Information

Users Browsing this Thread

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

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
  •