3D printed BLDC servo with 30Nm torque ($60)

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This is a high-torque yet affordable servo motor including a low KV BLDC motor, 3d printed planetary gearbox, and BLDC driver

Navid sabet

1

3D printing parts

For printing gears, I recommend using ABS or PC if it's possible. With 2mm skin and between 30 to 50 percent infill.

For other parts, I personally used PLA with 25% infill and 2mm skin. PLA's elastic feature really helps the robustness of the structure.
2

Motor plate

This part actually made out of a laser-cut aluminum sheet with 2mm thickness.

You also can 3D-print it if you want, But!!!!!! it might be good enough for small torques. Although, if you go higher than 3Nm you can see the plate start to stretch so you might want to increase the thickness.
3

Assembeling

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