MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.

Download Now


Raldrich Planetary NEMA17 FIXED

by biomushroom Apr 16, 2015
Download All Files

Thing Apps Enabled

Please Login to Comment

is there a solution how to print only one part of the collection i need the inner part for the gearrings ... i`am a very poor beginner please help me

If you don't want to print all, just render everything, then split the plate into separate parts and delete obects you don't need.
The way you do it is dependant from your slicing software.

The best solution indeed should be that you start to learn OpenSCAD and improve your skills, but this is up to you.
Try and if you got problems, contact me.

Is there a Nema 23 version of this gearbox?

how you extend the length of your shaft

what do you use for shaft?

I am using your planetary gear box, great thing. I use it for my extruder motor and because of this I have radial forces on it. So I have printed the bearing twice to handle this kind of force. I think otherwise the plastic toothed are stressed to much.

Try to print the gears in PET-G or Nylon (PA6 or Taulmann 610).
I personally print at a little higher temperatures to help interlayer bonding, using NOFANS on Infill and FULL FANS on perimeters. I alter the GCode using RegEx builtin in Simplify3D to turn on and off the fans where I want.
To make the polymer stronger you can "cook" it in an hoven (PLA@65°->3h / PET-G@90°->4h / Nylon@NOT NECESSARY).


For thouse, who will edit sCAD files and print M5 bolt version, replace "undefined_m5_bearing" & "undefined_m5_bearing_clearance" with "625_bearing" & "625_bearing_clearance" in the "raldrich_planetary.scad" file.

I had to loosen the tolerance on the planet carrier cylinders by 0.1mm to get the gears to fit well, but once that was done, it's working absolutely beautifully. Thanks!

I made one but my bearing it's 2mm smaller, Where can I find one with the hole for the bearing with 14mm diameter?

How am I configure the steps per mm fot this gear box. I want to use it for an extruder but I don´t know how to make it work.

You got 4 scad files.
You can modify the gear reduction in the main scad file.
For the betting bearing u can use the 40/10 ratio and multiply the steps of the extruder by 4 and then calibrate using the slic3r tutorial.
I'm on cell phone now, but if u have problems making it works give me some quotes for your bearing and I'll help u.

in the STL is 40/9
But if u need another ratio, u should get the OpenScad files and change it in the configuration file.

what is the final ratio of that gearbox ?

Sliced with simplify3d, 0.2mm layer at 50mm/s.

Sliced with simplify3d, 0.2 player at 50mm/s.

With that you print at what speed, what resolution ?