Another 60/40 post

[amxen]

My thought is that mine only got very tight when the ball screw was attached to bother fixed bearing. The outer bearing when It pops out you can see it's lifting up higher than the hole by about. 0.25 mm, you can get it back in the hole only by using the locking nut to pull it into places but then the ball screw is very tight in the bearing. Can't be rite forcing the bearing over the shaft into the hole, it's putting downwards force on the screw. Making it squeezes up on the bearing. Hope that makes sense. Lol

[jimbo_cnc]

yeh, that's wrong. my bearings slide in and out nicely.

Eddy had similar problems with bent ballscrews, and bent spigots.

[amxen]

OK so today i striped mine down and rebuilt it, it runs nice and smooth now and I can run it alittle faster but it still stalls if i run it at recommended speeds . I personally feel this steppers are not upto the job ..i have some nema32 450 i could try on it just to see if that changes things. what do you think?