New CNC Mill on the horizon

[EddyCurrent]

The second one is really bent :( I thought it was a bit bent when it came from Chai - i registered a complaint but heard nothing back after 2 emails. However with one end bolted down and the ball screw holding it steady one rotation of the thread results in the loose bearing mount the other end moving up and down about 2-3mm dependant on what part of the thread you are on.

Does anyone know anywhere I might be able to get this straightened? I have no access to a hydraulic press or anything precision enough to make this good? any suggestions?

This was Chai's response to my bent screw;

Before shipping, we tested the ballscrews VERY SERIOUSLY as the following standard:
The ballscrew assembly (Ballnut and Spindle assembled) Precision rolled, class 7 accuracy; JIS (0.050/300mm) (0.002"/12")
Ballnut: Single ballnut with zero backlash (<0.015mm) (0.0006")
Please refer to the link:
http://www.roton.com/screw_shaft.aspx
YOU can addust it if necessary.


Also here's some info on fixing those bearings; http://www.mycncuk.com/threads/6565-...6128#post56128