Leaking on the screw, do you have the wonderful option of cooled ball screws, what a fricken waste. That is how the thrust bearings went bad to begin with. I haven't done it yet(no time), but I plan on unplumbing the screws and just chilling the spindle. I can understand cooling the thrust bearings, and cooling the ball nut(if the lightning fast rapids required it), but running that coolant through a spinning screw, now that is just begging for a problem. Even worse, they are all in series, starting with the screws, so one seal goes bad, no cooling on the spindle, you know, where it actually might help, as opposed to cooling a ballscrew that was sloppy to begin with and spins at about 1% of the speed. |