Gears and transmission
Dual-Tier 70T/12T Compound Spur Gear with Hex Bolt Hub
- Bounding box
- 144.0 × 143.9 × 40.0 mm
- Engine
- Precision B-rep
- Parameters
- 10
- Published
- August 28, 2026
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The prompt
A dual-tiered 3D-printable compound mechanical gear component with a total thickness of 20mm. The bottom tier is a wide, heavy-duty spur ring gear with exactly 70 teeth and a thickness of 10mm. Stacking directly on top from the center axis is a small pinion gear with exactly 12 teeth, also 10mm thick. Chunky and robust involute teeth, thick webbed structural connection, solid manifold geometry, watertight engineering mesh, 3D printing ready, matte grey plastic filament texture, isolated on a white background.
Parameters
| Name | Value | Range |
|---|---|---|
| Shank Diameter | 8 mm | 4 – 20 |
| Shank Length | 30 mm | 10 – 100 |
| Hex Head Across Flats | 13 mm | 8 – 24 |
| Hex Head Height | 5.3 mm | 3 – 15 |
| Ring Gear Teeth | 70 count | 20 – 120 |
| Pinion Teeth | 12 count | 6 – 40 |
| Gear Module | 2 mm | 0.8 – 4 |
| Ring Gear Thickness | 10 mm | 4 – 30 |
| Pinion Thickness | 10 mm | 4 – 30 |
| Central Hub Diameter | 16 mm | 6 – 20 |
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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