Peristalsis is a type of smooth muscle movement that occurs in various parts of the digestive tract and other systems.
It is characterized by rhythmic, wave-like muscle contractions that move the contents through the tract.
This project is part of a larger initiative – the food printer. More details can be found here:
👉 Food Printer
The main goal was to design a peristaltic pump powered by an NEMA17 stepper motor. The pump was designed to be easy to mount on standard 30x30 aluminum profiles and use food-safe materials. A certified food-grade hose was selected, and all components are affordable, widely available, and easy to 3D print using a standard printer.
This is an upgraded version of the peristaltic pump based on feedback and improvements from version 2.0.
What's new in version 3.0:
- Improved construction for better performance and reliability.
- Designed for a larger hose diameter – increased flow capacity.
- Enhanced internal geometry to further reduce pulsation and ensure smoother operation.
Required components (besides 3D-printed parts):
- 4× M3x30 screws
- NEMA17 stepper motor (shaft length min. 23 mm)
- 6× bearings 686zz (or equivalents: height 5 mm, inner Ø 6 mm, outer Ø 13 mm)
- Flexible hose with outer diameter 6 mm and inner diameter 4 mm
All 3D printed parts in my build were printed with PLA, but PETG, ABS or ASA can also be used depending on your needs.
3.0_Pump.mp4
1.0.VS.2.0.VS.3.0.mov
In the second version of the pump, the hose diameter was reduced, and a second offset stage was added, shifted by 60%.
This ensures that when the lower stage is in the pressure-building phase, the upper stage is in the opposite phase, providing a smoother flow.
Pompa.z.kompensacja.-.zlozenie.v4.mp4
Pompa.-.zlozenie.v14.mp4
Components (V1):
1 – M3 screws
2 – Wheel bearings 686
3 – Silicone hose
4 – Stepper motor NEMA17
5 – Upper housing
6 – Rotor lock
7 – Rotor
8 – Lower housing
A peristaltic pump for dough dosing, version A with compensation, version B without compensation.
