NordicCNC's build log

[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.!!