P3steel 2.x - Z-axis top bearing

by toolson, published

P3steel 2.x - Z-axis top bearing by toolson Sep 30, 2015


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This is a top bearing mount for P3steel 2.x Z-axis.

Designed for use with M5 threaded rods and 625 ZZ bearing

This top bearings prevent Z-axis threaded rods from vibrating while printing with high jerks and accelerations.
Stepper/rods coupler aren't made for taking loads. They compress and uncompress when they want to. This parts take the load from the coupler. Having a huge affect on print quality and layer thickness precision.

Lock the threaded rods with Nyloc Nut DIN 985 as shown in the picture. Adjust the nuts that there is a little pretension on Z-coupler.

It's the next part of a complete series for P3steel parts. I redesigned every part based on my long time experience with the P3 steel.

Picture shows v1.

12.12.2015 - improved v2 with removable support structure now available

Please share your makes!


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Hey, i really like the parts you made, i started to print this one.
But.... when finished i tried to insert the bearing.. the hole was too small.
I measured it and it was 15.64 printed on a ultimaker 2, a buddy of me also printed this ( prusa i3 )and he got 15.69.

Any thoughts on this ?

Printed at the correct size for me. It sounds like you have a calibration problem.

Did you manage to get it sorted?

The solution is really simple:

both printers aren't well calibrated or slicer settings are not correct!

Yeah that would makes sense, however when i print other things they have the same size as the drawing..
Also i don't think there is a way to calibrate a UM2..

I checked the stl again. The hole is exactly 16,00 mm.
You're doing something wrong.

Ok, thank you for checking.. very strange..
Will do some tests tomorrow

Hey, nice work. But where can i find these knobs for the rods?

If you don't have a knob on hand, you could also print this knurled knob https://www.thingiverse.com/thing:1551820 which gmelenka published here recently.

Customizable Hex Bolt/ Hex Nut Knob

It is a standart DIN part.

DIN 466 M5