Peristaltic Pump

This is a peristaltic pump designed around 4/6 mm silicone tubing and driven by a JK42HS48-1204 stepper motor. I printed the parts in PLA for testing — works fine so far, but long-term durability hasn’t been checked yet.BOMThe model does require some supports when printing. For assembly you’ll need:8 × ball bearings 3×7×3 mm2 × ball bearings 8×22×7 mm1 × steel rod Ø5 mm, cut into 4 shafts ~12.5 mm each4 × screws M2.6×6 (short)4 × screws M2.6×12 (long)Silicone tube 4×6 mm (tested with standard aquarium air hose)Silicone tube connector (Prevents the tube from being pulled into the pump; it should be installed as close as possible to the housing on the suction side).Assembly is straightforward once you have the hardware. The pump runs pretty smoothly and is easy to adapt for fluid transfer projects, though keep in mind this is still a prototype. Assembly instructionRollsAssemble all rolls, push two bearing on both sides of the roll.Put a shaft rods into bearingsRotorPush roll shaft socket