Gears and transmission
114T Internal Ring Gear - Module 1.435
- Bounding box
- 180.1 × 180.0 × 10.1 mm
- Engine
- Precision B-rep
- Parameters
- 8
- Published
- September 21, 2026
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Free to download and use. See the terms.
The prompt
Create a parametric 3D-printable internal ring gear for a rotating platform mechanism, driven by a 12-tooth external spur pinion connected to a standard TT gear motor. Ring gear dimensions: External diameter: exactly 180 mm. Internal tooth tip diameter: exactly 160 mm. Total thickness: 10 mm. Approximately 114 internal teeth, calculated for compatibility with a 12-tooth pinion and module approximately 1.43. Standard involute tooth profile. Pressure angle: 20 degrees. Straight internal spur teeth. Mounting holes: Exactly 4 blind circular holes. Diameter: 6 mm. Depth: 4 mm. Positioned at 90-degree intervals on the external flange. Holes must not pass through the entire ring. Mechanical requirements: The internal ring gear rotates around its central axis. It is driven by a 12-tooth external spur pinion connected to a standard TT gear motor. Ensure proper internal gear meshing, compatible pitch diameters, and adequate backlash for FDM 3D printing. Use a parametric design with adjustable module, tooth count, thickness, and mounting hole positions. Export as STL. Ensure the final model is a single solid printable part.
Parameters
| Name | Value | Range |
|---|---|---|
| Module | 1.44 mm | 0.5 – 3 |
| Internal Teeth | 114 count | 20 – 200 |
| Total Thickness | 10 mm | 3 – 30 |
| External Diameter | 180 mm | 80 – 320 |
| Mounting Hole Dia | 6 mm | 2 – 12 |
| Mounting Hole Depth | 4 mm | 1 – 8 |
| Mounting Hole Count | 4 count | 1 – 12 |
| Mounting Hole Radius | 86.6 mm | 86.3 – 86.9 |
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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