Linear actuator with stepper motor from cd/dvd optical drive

[UPDATE]

There is my upgraded model with integrated limit switches: https://www.thingiverse.com/thing:5173219

I needed a lot of tiny linear actuators so I designed something like this.In most cases all the parts required to build this can be found in computer optical drives, but I also added a version with linear bearings instead of brass bushes(not all drives have them).The linear bearing version is better in my opinion but both work well.Parts needed from cd/dvd drive:

-3mm shaft

-linear stepper motor

-slide bushes (if there are no brass slide bushes in the drive, use 2 LM3UU bearings)

-M3 screws

You should use glue on parts placed on shaft (clutch and nut).In some stepper motors the holes must be enlarged to fit M3 screws

How it works: https://youtu.be/nML0P0cFWjI

Linear bearnigs if needed(choose LM3UU option) : https://s.click.aliexpress.com/e/_AsEc8S

Step files: https://drive.google.com/drive/folders/1dXIVqyzUB_mrgUrEh6H3EsR2uR3m4u6S?usp=sharing

Print Settings

Rafts:

No

Supports:

Resolution:

0.1 for nut and clutch

Category: Robotics