Manual Peristaltic Pump
I made a pair of these pumps to test out an idea I was playing with regarding inline mixing, but also to just get some experience designing/building peristaltic pumps.
![](https://cdn-images-1.medium.com/max/640/1*ROcYN0CvEAD8wSqmvO1HUA.jpeg)
I designed it to be printed from resin, but I think the main challenge if trying to make it FDM would be getting the bearing races smooth.
![](https://cdn-images-1.medium.com/max/640/1*_LIqfEGnYb2ujkc1-5fzLA.png)
Parts List
Purchased Materials:
- Resin — So far, I’ve only printed a couple of these, and I made both from a combination of Anycubic Translucent Green and my go to resign, SirayaTech Fast Smokey Black.
- 6x — 608 2RS Bearings — aka skateboard bearings
- 36x — 3/8" bearing balls — I found this ‘slingshot ammo’ and use it as budget bearing balls quite a lot :)
- 1x — 7/16"x3" bolt and nut — Sorry about this one, I was designing around what I had laying around/bought already. Hopefully someone will be kind enough to remix it with a more appropriately sized fastening solution.
Printed Parts:
- PumpHousing.stl
- PumpRotor_R3.stl
- PumpRotorOuter_R3.stl
- DriverRotor.stl
![](https://cdn-images-1.medium.com/max/640/1*SuSo_ecAyv1JF5w99DJ85w.jpeg)
Once the parts are assembled, you just load your tubing by feeding it in as you rotate the rotor. And you’re good to go! You should now be able to turn the rotor and pump fluid in either direction through the pump! The one struggle (with this and every other peristaltic pump I’ve worked with) is with keeping the pump from drawing in the tubing do to friction with the roller. As long as you keep it tied up or restrained somehow, you should be fine.
More to come — I’ve currently got 3 follow-up designs building dosing pumps for hydroponics test systems that I’ll be adding when I get around to them :)