584,858 active members*
4,548 visitors online*
Register for free
Login
IndustryArena Forum > MetalWorking Machines > Fadal > Fadal Ballscrew leaking coolant
Results 1 to 6 of 6
  1. #1
    Join Date
    Aug 2009
    Posts
    19

    Fadal Ballscrew leaking coolant

    I have a couple FADAL machines and it is apparent the coolant through ball screw design doesn't work well over time. The screw itself is still good and works well, but the seals used to keep the coolant where it should be cut into the journal and eventually give way causing bearing failure. Is there a fix for this other than putting a whole new screw in and waiting for it to happen again? Is there a company that can just put a stainless steel sleeve over the journal area for an economical price? I hate to spend a grand plus just to have it happen over and over.

  2. #2
    Join Date
    Jan 2006
    Posts
    64
    The best thing you can do is replace the thrust bearings and then route the cooler fluid to the spindle housing only. One of the worst ideas Fadal ever had.
    Hardly anyone really needs the screw cooling.

  3. #3
    Join Date
    Jan 2004
    Posts
    3154
    Yup
    Bypass the ballscrew cooling
    www.integratedmechanical.ca

  4. #4
    Join Date
    Aug 2009
    Posts
    19
    What kind of accuracy would I lose by bypassing the coolant? At "normal" speeds it should be negligible considering the screw bearing is constantly being oiled with the Bijur system?

  5. #5
    Join Date
    Apr 2009
    Posts
    105
    We by-bassed ours a couple years ago and NO loss of accuracy. Circle interpolated holes are still nice and round.
    Still working in the "D".

  6. #6
    Join Date
    May 2005
    Posts
    53
    I bypassed ours when the machine was only about a year old. Accuracy loss is zip. My Machinery Handbook lists the linear expansion per unit length per degree F. for steel as .00000633 at 68 deg. F. In other words, a 10.0 inch move at a 5 deg increase in temperature would be 10.0003
    I don't know if you could run the machine hard enough to raise the screw temperature 5 degrees. Bottom line- bypass the coolant line and sleep well.

Similar Threads

  1. Coolant leaking into base
    By Machining in forum Haas Mills
    Replies: 9
    Last Post: 08-30-2018, 10:07 PM
  2. coolant tank lid leaking
    By R.DesJardin in forum Tormach Personal CNC Mill
    Replies: 37
    Last Post: 01-29-2009, 03:18 PM
  3. Leaking coolant reservoir
    By JTulley in forum Tormach Personal CNC Mill
    Replies: 5
    Last Post: 08-03-2008, 02:51 PM
  4. Haas TM2 Leaking Coolant
    By Chris Swier in forum Haas Mills
    Replies: 1
    Last Post: 06-21-2008, 03:57 AM
  5. thru spindle coolant leaking
    By GARY DAVIS in forum Fadal
    Replies: 4
    Last Post: 03-25-2008, 01:28 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •