[Ultimaker 4, The next generation of 3d printer]

Perhaps it should use quality components instead of poor cinese's ones and be assembled by technician instead that by monkeys?

That's would be a GREAT improvements !!

[Why I don't want to be a Moderator on Ultimaker Forums]

Hi Neotko, good to see you wake up! at last...

[linear bearing or sintered bushing]

 

Never made use of Google in your life?

http://www.euro-bearings.com/lin16.html

http://www.e-lrb.com/

https://www.nbcorporation.com/product/lineup/strokebush/sre.html

http://www.schaeffler.de/content.schaeffler.de/en/branches/industry/printing_machines/products_printingsectors_ina_fag/rotary_linear_motion/bearings_linear_rotary_motions.jsp

 

You are new here. We are a supportive forum. Your informative links are very much appreciated. The insulting tone of your comment, not so much.

 

the answers of a support should be at least qualified, if you are so susceptible to a comment, that only those who do not use the internet could be considered an offense, it is better that you change the name of the forum to "Inconclusive Chat" rather than "Modifications and Hacks"

[linear bearing or sintered bushing]

You guessed right, XY is using bushings because they need to rotate.

For maintenance have a look here;

https://fbrc8.zendesk.com/hc/en-us/articles/207988073-Greasing-and-Oiling-Your-Ultimaker

 

Never made use of Google in your life?

http://www.euro-bearings.com/lin16.html

http://www.e-lrb.com/

https://www.nbcorporation.com/product/lineup/strokebush/sre.html

http://www.schaeffler.de/content.schaeffler.de/en/branches/industry/printing_machines/products_printingsectors_ina_fag/rotary_linear_motion/bearings_linear_rotary_motions.jsp

[Sharing some exciting news: the Ultimaker 2+]

It depends on a few things, like shape, size and print profile settings.

A very small model can not be printed with 24mm³/s, mainly not because there it can not extrude more, but because the filament doesn't have enough time to cool.

So two parts of the spectrum should be kept in mind, on one end you have the capacity on how fast it can heat and extrude, on the other end the time plastic usually takes to cool down and get ready for the next layer.

Based on this we did the extrusion stress test (something like this) and we reached 24³mm/s with a .8mm nozzle.

Which does not mean everything can be 3D printed at this speed.

Does this answer your question?

 

I have no doubt you reached 24³mm/s because the original UM2 feeder can easily reach 15³mm/s with a 0.4mm nozzle !