Newly assembled CrossFire Pro, Left Y axis binding

Hi All,

I just finished assembling my CrossFire Pro today and am on step A7. - Tighten the X-axis and Y-axis Lead Nuts. Jogging the machine to the most positive X position works perfect. However, when I try to move it to the most negative Y position, only the right Y-axis moves. The left Y-axis binds up. I can manually turn the lead screw by using an allen key on the socket head cap screw. I’m not sure if the bearing carriages are too tight, or there is something off with the lead screw or something with how I tightened the motor couplers. Here is a video where I’m trying to show how the right Y-axis moves but the left Y-axis doesn’t: https://photos.app.goo.gl/zZSj8K3ftq7Af4yq9

I appreciate any tips yall have. I did read a post or two about Y-axis problems but didn’t really understand them / wasn’t able to find a resolution.

Switch the Y motor plugs at the control box and see if it moves to the other side.

2 Likes

It looks like in the picture that the bracket holding the lead screw may be the wrong one. The lead screw looks in a bind at the front bracket. It may be the picture.
The next question is, is the coupler slipping? Mark the lead screw with a line with a marker and see if it is moving.

2 Likes



Here are some up close photos. I tried switching the Y motor plugs. Still binds.

Same side?

https://photos.app.goo.gl/XMnF6ERsWnz2CK4T7 turning the lead screw allows the Y-axis to move

Loosen the four bolts that hold the lead nut and see if the nut moves over.

2 Likes

If the problem did not move to the other side. You have something in a bind.

1 Like

I loosened the four bolts and it’s still bound up: https://photos.app.goo.gl/9wybhdvh6rhiq8HP7

How tight is the allen bolt on the end of the lead screw?

One more thing. Take a allen wrench and loosen the lead screw support brackets to see if they are 90 degrees withe lead screw.
Do the motor end too. Just loosen them if they are binding they will snap into place.

2 Likes

It could be a bad motor, but it is doubtful.

Double check that you have the bearing mounts in the right spots. They are different and could cause binding.

2 Likes

do you mean the lead screw bearing mounts?

Yes, just crack the bolts and see if they move.

1 Like

As 72Pony said, ensure you have the correct bracket mounted. They look almost identical, but one is slightly smaller.

3 Likes

loosend and re-tightened the bearing mounts along with the couplers and the y axis is moving now!

5 Likes

Happy cutting my friend. Welcome to the plasma jungle. :crazy_face:

3 Likes

thanks for the help!

2 Likes

BigDaddy is all kinds of help. He says he is grumpy but I think his heart grew 10x its size when your issue was fixed just now!!! :heart:

We all celebrate :balloon: when solutions are found…maybe not ‘celebrate’ but it pleases us. We all want people to have a good experience.

3 Likes