Free 50 Best Homemade Tools eBook:  
Remove advertisements
Results 1 to 6 of 6

Thread: 3.5" live center

  1. #1
    Frank S's Avatar
    Join Date
    Aug 2015
    Location
    Peacock TX
    Posts
    1,978
    Thanks
    340
    Thanked 1,929 Times in 936 Posts

    Frank S's Tools

    3.5" live center

    today I needed to make a larger live center for a project that is coming up
    First I drilled the piece of round stock cut off of a shaft that came out of a cotton gin to 2 " then bored it toe 2.8346 72 mm to accept a pair of 6207 CZ bearings then I machined the cone
    3.5" live center-20180521_113735.jpgc.jpg
    next I made a mandrel from a piece of 1.75" hydraulic cylinder rod
    3.5" live center-20180521_161549.jpgc.jpg
    3.5" live center-20180521_184607.jpgc.jpg
    3.5" live center-20180521_184702.jpgc.jpg
    3.5" live center-20180521_184740.jpgc.jpg
    Never try to tell me it can't be done
    When I have to paint I use http://kbs.justoldtrucks.com/

  2. The Following 5 Users Say Thank You to Frank S For This Useful Post:

    Jon (05-22-2018), olderdan (05-22-2018), Paul Jones (05-22-2018), Seedtick (05-22-2018), Tuomas (05-22-2018)

  3. #2
    Frank S's Avatar
    Join Date
    Aug 2015
    Location
    Peacock TX
    Posts
    1,978
    Thanks
    340
    Thanked 1,929 Times in 936 Posts

    Frank S's Tools
    I purposely made the mandrel to be easily removed for use in other things of a larger live center cone if need be
    Never try to tell me it can't be done
    When I have to paint I use http://kbs.justoldtrucks.com/

  4. #3
    pfredX1's Avatar
    Join Date
    Sep 2016
    Location
    Delaware
    Posts
    140
    Thanks
    3
    Thanked 92 Times in 51 Posts

    pfredX1's Tools
    I worked at a place that made live centers for the paper industry, or whatever people wanted really gigantic centers for. The big ones were about 6 feet tall standing on end. I forget how many tons they were rated for but it was a lot. I just remember it being some ridiculous amount.

  5. #4

    Join Date
    Sep 2012
    Location
    Hinchinbrook QLD
    Posts
    41
    Thanks
    8
    Thanked 18 Times in 8 Posts
    Frank,
    Did you consider using a thrust bearing?

  6. #5
    Frank S's Avatar
    Join Date
    Aug 2015
    Location
    Peacock TX
    Posts
    1,978
    Thanks
    340
    Thanked 1,929 Times in 936 Posts

    Frank S's Tools
    12 bolts I had 2 of the 6207s I could swap them out for an angular contact but it would hardly be needed since the size of the bearing are so large 35 mm ID 72 MM OD 14 mm thick with 12 11.1 mm balls No more thrust load that could possibly be placed on them by the tails stock screw there really is no need for a thrust bearing or even an angular contact they have a radial capacity of 31022.750n per bearing and if it were even possible to exert as much as 2224n the bearing life would be 7915 hrs at 1200 RPM
    Never try to tell me it can't be done
    When I have to paint I use http://kbs.justoldtrucks.com/

  7. The Following User Says Thank You to Frank S For This Useful Post:

    12bolts (05-23-2018)

  8. #6
    Content Editor DIYer's Avatar
    Join Date
    Aug 2013
    Posts
    3,084
    Thanks
    323
    Thanked 621 Times in 562 Posts


    Thanks Frank S! We've added your Live Center to our Machining category,
    as well as to your builder page: Frank S's Homemade Tools. Your receipt:





    Post your reply!
    Join 33,912 of us and get our 50 Must Read Homemade Tools eBook free.



    50 Must Read Homemade Tools

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
  •