Noisy z axis

[forseral]

Hello all,

I'm experiencing some very strange noise with my k2cnc zaxis as of a few days ago. The link below will let you hear it. I've examined all I could. Only strange thing I found is the screw feels a tiny tiny tiny bit strange at the location it makes the noise. (like it's warped or something)

Please let me know if you have any thoughts.


http://www.youtube.com/watch?v=wu0oMt3x2m4]z-axis noise - YouTube

[cr2]

What the @$#&! Are you talking about the little bump on the way down, or the screaming all the way up! Are the guide rods greased? I'd send the link to K2 and ask them what needs to be done to fix it. You'll probably need to follow up with a phone call.

[forseral]

hahahha, i know it's bad!

I talked w/ k2 via email. he told me to grease the screw - which I did. I used white lithium grease and it helped by decreasing the occurrences but it still happens.

there's the tiniest bit of play at the bottom of the screw where it mounts to the bearing. I wonder if this normal

[DonFrambach]

Did you get this problem resolved? If so, how? Thanks.

[forseral]

Did you get this problem resolved? If so, how? Thanks.

sorta. i greased it with white lithium grease and added a larger motor as it was losing steps.

it makes the noise but not very often.

[DonFrambach]

K2CNC had no other suggestion besides lubrication?

[cyclestart]

Mine had a high pitched squeal right out of the box and the anti-backlash nut was shredding itself. Tech support was no help and also rude (they did suggest more lube ). I replaced it with a superior product from a competitor (thanks George). Someday when the bitterness subsides I'll disassemble the thing and try to figure out what caused the noise. More lube is a temporary solution at best.

[cyclestart]

Okay, I feel a bit better for that little rant lol. Nobody likes being treated like a chump.

Try isolating the problem. The nut should be attached by 3 cap screws. Remove these and turn the acme nut(s) to the top of the travel. Now check how smoothly the moving portion slides. If it binds it could be dirty bearings or rails out of parallel.

[DonFrambach]

... I replaced it with a superior product from a competitor (thanks George). ...

Can you reveal the superior product from a competitor?

[cyclestart]

Xzeroautomotion.
George (aka Gio) tends to be madly off in all directions making for a confusing customer experience. The quality received turned out to be worth the wait, a lot of bang for the buck.

I'm not sure if he still sells individual assemblies or only entire machines.

[gio666]

Thanks Cyclestart .
On the K2 Z axis first I would check the top plate and bottom plate to make sure they are square to each other, Then check the back side of each rail from front of the backing plate and see if same distance from top and the bottom. The bearing and nut holder on that Z axis is extruded and most likely not bore out the holes for the bearing could be off and binding , I would loosen the bolts on the bearing as much as you can without them starting to move in housing , and see if still out of whack. That noise is a bearing binding sound and I don’t think it is a acme screw problem but it could also be out with the rails.

[vtx1029]

Yea I just bought a K2 Z as well. I hope mine doesn't have the same problems. I wish I would have know about Xzero before my purchase...