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IndustryArena Forum > Mechanical Engineering > Linear and Rotary Motion > Z axis linear bearings for MDF router
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martinw Z axis linear bearings for... 09-26-2007, 01:29 AM
ger21 Alignment can be tricky, but... 09-26-2007, 01:45 AM
Oldmanandhistoy Hi Martin, I used them on... 09-26-2007, 02:06 AM
martinw Dear John, Thank-you for... 09-26-2007, 02:22 AM
martinw Dear John and Gerry, John ... 09-29-2007, 12:02 AM
Oldmanandhistoy Hi Martin, Sorry I missed... 10-27-2007, 12:11 AM
martinw Dear John, Many thanks,... 10-28-2007, 10:16 PM
martinw Dear Gerry. I think your... 09-26-2007, 02:14 AM
ger21 All the holes for the rails... 09-26-2007, 02:13 PM
martinw Dear Gerry, Thanks for... 09-26-2007, 04:05 PM
ger21 I can check tonight, but 6... 09-26-2007, 04:18 PM
anoel I used them for all of the... 09-26-2007, 08:06 PM
martinw Dear Nathan, I was only... 09-26-2007, 10:07 PM
martinw Dear Nathan, Thanks. ... 09-27-2007, 12:44 AM
dertsap with 20 mm shaft i highly... 09-27-2007, 12:53 AM
martinw Dear dertsap, Thanks for... 09-27-2007, 01:18 AM
dertsap must have been something to... 09-27-2007, 01:42 AM
martinw Dear dertsap, OK you... 09-27-2007, 02:06 AM
martinw Dear Gerry, Thanks for... 09-29-2007, 01:16 AM
ger21 Martin, my shafts are only... 09-27-2007, 02:04 AM
martinw Dear Gerry, Thanks for the... 09-27-2007, 02:18 AM
ger21 The gantry sides are about 2"... 09-27-2007, 02:22 AM
martinw Dear Gerry, That's a good... 09-27-2007, 02:30 AM
ger21 They're 2 layers of 5/8" MDF,... 09-27-2007, 02:14 PM
ger21 Martin, here's a little more... 09-29-2007, 12:29 AM
martinw "wisges???? Martin 10-28-2007, 10:18 PM
  1. #1
    Join Date
    Mar 2005
    Posts
    1673
    Hi Martin,

    I used them on a plywood machine for over a year and had no problems. The dust was taken care of by the wipers and I did not use lubricant. The only reason I stopped using them was because I built a bigger machine and used linear rails and blocks for more rigidity. To align them accurately I made a ply template and a hand router.

    John

  2. #2
    Join Date
    Dec 2005
    Posts
    1408
    Quote Originally Posted by Oldmanandhistoy View Post
    Hi Martin,

    I used them on a plywood machine for over a year and had no problems. The dust was taken care of by the wipers and I did not use lubricant. The only reason I stopped using them was because I built a bigger machine and used linear rails and blocks for more rigidity. To align them accurately I made a ply template and a hand router.

    John
    Dear John,

    Thank-you for that.

    I'm glad that I'm not alone in thinking of trying it on a timber/MDF gizmo.

    Best wishes,

    Martin

  3. #3
    Join Date
    Dec 2005
    Posts
    1408
    Quote Originally Posted by Oldmanandhistoy View Post
    Hi Martin,

    I used them on a plywood machine for over a year and had no problems. The dust was taken care of by the wipers and I did not use lubricant. To align them accurately I made a ply template and a hand router.

    John
    Dear John and Gerry,

    John You mention wipers. The bearings I have seem to have a hard rubber ring at each end. Are these wipers?.. or is something else needed.

    Gerry Thanks for the encouragement. I did a trial with a jig fence and spacer. My wonky drill press tended to deflect towards the front as the forces from the Forstner bit (32mm dia") tilted the table out of right angle with the drill press column. I clamped a vertical strut down to the floor to support the front edge of the table and that improved things massively.
    The sample bearing housings and shaft supports seem to be pretty good, and are in line. Anyway, it was obviously not a "bodge and filler evening"..

    Best wishes to all,

    Martin

  4. #4
    Join Date
    Mar 2005
    Posts
    1673
    Quote Originally Posted by martinw View Post
    John You mention wipers. The bearings I have seem to have a hard rubber ring at each end. Are these wipers?.. or is something else needed.

    Hi Martin,

    Sorry I missed this post, for some reason I didn't get an email notification for a new post in this thread.

    To answer your question if it’s not too late; yes the hard rubber rings are the wipers I was talking about.

    BTW when I said I used no lubricant it is not strictly true, I gave the rails a wipe with WD40 from time to time.

    John

  5. #5
    Join Date
    Dec 2005
    Posts
    1408
    Dear John,

    Many thanks, and no, you are not too late.

    Best wisges,

    Martin

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