Let's Make Robots!

28BYJ-48 Stepper pushes 2.8Kgs

As part of a 3D printed actuator , i have been sourcing parts for the drive motor...

Per-chance a 28BYJ-48 stepper motor shouted off the shelf .......

A few "Blender" iterations later ... a wormscrew and wormscrew nut were printed.

Hot off the press testing , just by holding the motor and nut secure ... i drove the stepper until it stopped.

As you see below it easily exerts a press force circa 2.3Kgs  .. the stepper locked itself at 2.8Kgs.

This force is being held on just two rows of thread - so good proof of PLA plastic stability.

The Mech. needs to be well greased .... as quick fix i used "Lip Chapstick" grease......

This is a four sectioned part (gear at 2nd layer is for driving a feedback potentiometer)

This is printed @0.25mm layer depth (a very rough print)

Looks promising.....

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.

You got some good power out of those $2 steppers, have you put the .stl anywhere ?

the ones I have are really slow and geared 48:1 (around 2 rpm for me)

so hate to think how long it took to move that worm drive !

I love those little stepper/gearmotors.... I want stronger/bigger ones, but I cannot find any that are bigger with gearbox....  

Had not really believed that you could reliably print a worm gear. 

Looks great.


3D printing always amazes me... and indeed i too did not think that the PLA would easily make strong worm gears this way.