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6

According to igus commercial documentation, these bushings: do not need any kind of lubrication, are not susceptible to humidity (but your steel rods might) work seamlessly in presence of dust (it gets expelled from the bushing with movements) I've replaced all of my bearings with these, and in my experience, the above claims have been true so far. I must ...


4

Ideally you would use three bearings opposed to four. In principle you will only need 3 fixtures to get a stable reference frame. Look at how most Prusa i3 "X" carriages are constructed, they also have just three bearings. Three bearings are way more easy to line out (especially with tight tolerance bearings), with four bearings you will get binding much ...


2

In addition to this answer and addressing Anything else I'm not thinking of to worry about? I would like to add that you should take care in installing the plastic bearings in suitable housings. It is best to lower the mass of the carriages by replacing the blocks and the bearings, there are a lot of printable bearing housings to find on the internet (e.g. ...


2

Bushings will be quieter than linear ball bearings. Some online discussions complain of the linear bearings becoming noisy, and (in what I think is a failure of the balls to circulate properly) for the balls to develop flat spots. If the balls aren't moving properly, you will end up with a bushing. You might start with a bushing in the first place. ...


1

Bearing on a shaft An 8 mm (ID, Internal Diameter) bearing should always fit on an 8 mm (OD, Outer Diameter) shaft. If it does not fit, one of the 2 is of a different size. Please use a caliper to determine the size of both. Bearing in a housing If it is the outer size of the bearing, i.e. fitting in a printed carriage or a bearing housing (e.g. SCxxUU), you ...


1

After completion of the print job, I was able to perform a closer inspection. The black goo contains metallic particles, and the rail the bearings are riding on has a visible groove - which means replacing both the bearings and the rail.


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