Quote Originally Posted by CNCRY View Post
I did run it slow and seemed ok but worried it would wear the ballnut fast .
Nope that ballscrew was the only one not from Fred , I ordered it in the EU to save time but wishing I hadn't now!
The seller is saying "For a ballscrew the external outer diameter is a totally unimportant dimension, because it connects to the ballnut with balls" which kind of makes sense but why call it a 16mm screw then. And Fred's are 16mm within 0.01mm ...
Yes didn't think it would have been as Fred's screws are also ways within 0.01 of specified like they should be. Send it back would be my suggestion and fit the old one if it's only slightly bent. Then buy a new one from Fred if it gives you any grief.