spindle cross section view

[routercnc]

Great site SKF Ross, lots to read about. Shows the lengths required to make high end machines.

Take your point about double pairs of angular contacts - increased preload when the spindle expands. Perhaps water cooled is OK, or if you look at the Chinese machine the top bearings seem to be located with either a coil spring, or are these sliding bearings? Maybe they just apply a factory preload and you get so much life out of the unit.

As a bit of light relief, after all the time and energy you are putting into this spindle, make sure you don't do this . . .:surprised: :surprised:
http://www.youtube.com/watch?v=gPPp1A1gj2M
Makes you wince. . .


And now for something completely different!
http://www.youtube.com/watch?v=yln_I...eature=related