Having a bad week

[Web Goblin]

Cutting no 29 in a batch of 30 parts for someone and the cross travel ballnut failed. Looks like the little plastic guide snapped, last photo, and the balls got stuck and jammed the screw. Part ruined and a new ball nut required.
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Cleaned it out in the tank and I cant see any swarf in it so it looks like it just died.
After last Friday when someone ran into the back of me with a 7.5T Iveco on the motorway I thought I had used up all my bad luck in one go but it looks like I found some more from somewhere.

[HiltonSteve]

I have had quite a few fail with the plastic inserts, not on my machine but on a different job which I use them for, switched to the slightly more expensive metal insert ones and they have been fine.

Well your luck may have changed if its a 25mm one as i have box full of the metal insert ballnuts and you can have one for a good price.

From experience though the 2 types do not fit on the same ball screw so don't get too excited just yet...

[i2i]

what are your lottery numbers, i'll make sure i don't use them:thumsup:

[Web Goblin]

Lottery didnt come up on Friday either, one number was the best I could get.
Hilton steve thanks for the offer but I have 20mm ones. What type did you use?