NordicCNC's build log

[NordicCnc]

So I have installed 2 linear rail carriages just to test how they perform. Once again to my surprise, both of the tested carriages are running extremely bad. Same as in Joe's video. I am not sure if this is normal. I didn't apply any grease yet, I will try with grease applied tomorrow also. But I figure they should at least not bind/stagger every 10mm even without grease??

https://youtu.be/b_DDT43lBIc

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[JAZZCNC]

Well first have you got the bearing reference edge and rail reference edge-aligned.?

Also, they can feel stiff at first, esp when unloaded, just put some weight on them and feel how they slide. I think you'll find the slide easily with weight on them and greased up.

[NordicCnc]

Well first have you got the bearing reference edge and rail reference edge-aligned.?

Also, they can feel stiff at first, esp when unloaded, just put some weight on them and feel how they slide. I think you'll find the slide easily with weight on them and greased up.

Yes I have those aligned. I reached out to Free and he said that it is most likely the plastic seal that is not aligned correctlt and thay it should be easy to fix. I will report back how it goes!

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[JAZZCNC]

Yes I have those aligned. I reached out to Free and he said that it is most likely the plastic seal that is not aligned correctlt and thay it should be easy to fix. I will report back how it goes!

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No I very much doubt it. The plastic seals don't grip that much and not something that misalign because of how the bearings are put together.
Normally I don't get trouble with Hi-win bearings needing cleaning from new but if it feels like just one of the bearings is doing it then it may be worth taking apart and checking there's no debris in it.
They are very easy to take apart and rebuild, just do it inside a tray because the balls go every where.

Personally I think they will be ok and your feeling the normal Sticky clicky notchy feeling they can give when dry and new. Obviously very difficult to now without feeling them.

[NordicCnc]

No I very much doubt it. The plastic seals don't grip that much and not something that misalign because of how the bearings are put together.
Normally I don't get trouble with Hi-win bearings needing cleaning from new but if it feels like just one of the bearings is doing it then it may be worth taking apart and checking there's no debris in it.
They are very easy to take apart and rebuild, just do it inside a tray because the balls go every where.

Personally I think they will be ok and your feeling the normal Sticky clicky notchy feeling they can give when dry and new. Obviously very difficult to now without feeling them.

You were right. After pushing them around for a while and greasing them, they now run much smoother. Problem solved!

[JAZZCNC]

You were right. After pushing them around for a while and greasing them, they now run much smoother. Problem solved!

Good, It's common for people not used to profiled rails to think they would glide as if on air when they are actually quite stiff. Preloaded ones are even worse, they can feel as if they have sized up.!!