Fittings and adapters
Robotic Forearm Assembly
- Bounding box
- 186.0 × 222.0 × 170.0 mm
- Engine
- Precision B-rep
- Parameters
- 27
- Published
- September 2, 2026
Download
Free to download and use. See the terms.
The prompt
a robotic arm without shoulder, , 5 servos sg90 controlling 4 fingers and a thumb, 4 stepper 28byj-48 with its driver board controlling elbow bent, forearm rotation, wrist up and down, thumb movement, theres a esp32 and a buch dwon boost converter rated 8 amps for servos
Parameters
| Name | Value | Range |
|---|---|---|
| Forearm Length | 150 mm | 100 – 200 |
| Forearm Diameter | 40 mm | 30 – 60 |
| Wall Thickness | 3 mm | 2 – 5 |
| Elbow Motor Diameter | 28 mm | 20 – 40 |
| Elbow Motor Length | 20 mm | 15 – 30 |
| Rotation Motor Diameter | 28 mm | 20 – 40 |
| Rotation Motor Length | 20 mm | 15 – 30 |
| Wrist Motor Diameter | 28 mm | 20 – 40 |
| Wrist Motor Length | 20 mm | 15 – 30 |
| Palm Length | 80 mm | 60 – 100 |
| Palm Width | 60 mm | 40 – 80 |
| Palm Thickness | 20 mm | 15 – 30 |
| Finger Length | 60 mm | 40 – 80 |
| Finger Width | 10 mm | 8 – 15 |
| Finger Thickness | 8 mm | 5 – 12 |
| Thumb Length | 50 mm | 40 – 70 |
| Thumb Width | 10 mm | 8 – 15 |
| Thumb Thickness | 8 mm | 5 – 12 |
| ESP32 Length | 50 mm | 40 – 60 |
| ESP32 Width | 30 mm | 20 – 40 |
| ESP32 Thickness | 5 mm | 3 – 8 |
| Converter Length | 60 mm | 40 – 80 |
| Converter Width | 40 mm | 30 – 60 |
| Converter Thickness | 15 mm | 10 – 20 |
| Driver Board Length | 45 mm | 30 – 60 |
| Driver Board Width | 20 mm | 15 – 30 |
| Driver Board Thickness | 10 mm | 5 – 15 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
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