Slide bearings

[a_johnson]

I have a K2CNC KT-1414, use it for cutting various holes in aluminum plate. The machine is about 2 years old and I noticed the bottom 20mm slide bearings are loose. I have not had the time to take the machine apart but I wanted to ask a few questions.

- Are the bearings adjustable? Can I adjust preload?

- Are they difficult to replace?

- What replacement bearing would you suggest?

Thanks

[cbalasuriya]

problem may be in the slide bearings. can u post photos of the slide Bering, then we can say adjustable or not.if not adjustable you should relapse the bearings.
Before i had same problem of our CNC milling machine. the holes was not smooth and vibration when cutting. the reason was loosen the check nut of the X axis ball screw.
so check the machine completely and tight if any loosen components

- some bearings can adjest, send photos
-not difficult, but u have to mark all component (or get photos) before de-assemble.
- relapse ball screw support bearings also

[a_johnson]

Here are a couple pictures. I put a dial gauge on various points and it is the bearings that are the problem.

Thanks for the help and comments.