Gears and transmission
Two-Piece Gearbox Housing Assembly
- Bounding box
- 480.0 × 370.0 × 225.0 mm
- Engine
- Precision B-rep
- Parameters
- 26
- Published
- October 23, 2026
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The prompt
Create a parametric, two-piece cast iron housing for a two-stage spur gear reducer with three parallel shafts. Technical requirements: - First-stage center distance: 125 mm - Second-stage center distance: 135 mm - Bearing housing bore diameters: 52 mm, 80 mm and 90 mm - Gear outside diameters: 55 mm, 205 mm, 78 mm and 204 mm - Preliminary wall thickness: 8 mm - Minimum preliminary internal gear clearance: 12 mm Create a realistic gearbox housing with a removable upper cover, a lower housing, bearing support bosses, mounting feet, fastening flanges and bolt holes. The shaft axes must be parallel, but not assumed to lie on a single straight line. Use the actual shaft coordinates from an imported reference assembly if available. Otherwise, generate a preliminary concept and clearly identify all assumed dimensions. Generate accurate, editable solid CAD geometry suitable for STEP export to Autodesk Inventor. Separate the lower housing and upper cover into distinct solids. Do not generate only a visual mesh.
Parameters
| Name | Value | Range |
|---|---|---|
| Overall Length | 420 mm | 300 – 600 |
| Overall Width | 310 mm | 250 – 400 |
| Lower Housing Height | 120 mm | 80 – 160 |
| Upper Cover Height | 70 mm | 40 – 100 |
| Wall Thickness | 8 mm | 5 – 12 |
| Flange Thickness (each half) | 15 mm | 10 – 20 |
| Flange Outward Extension | 30 mm | 15 – 50 |
| Bolt Hole Diameter | 13 mm | 8 – 20 |
| Bolt Edge Margin | 20 mm | 15 – 30 |
| Bolts along Length | 6 mm | 3 – 10 |
| Bolts along Width | 4 mm | 3 – 8 |
| Boss Wall around Bore | 20 mm | 10 – 30 |
| Boss Outward Length | 40 mm | 30 – 80 |
| Shaft 1 X | -125 mm | -200 – -50 |
| Shaft 1 Z | 0 mm | -30 – 30 |
| Shaft 2 X | 0 mm | -20 – 20 |
| Shaft 2 Z | 0 mm | -30 – 30 |
| Shaft 3 X | 133.5 mm | 100 – 180 |
| Shaft 3 Z | 20 mm | -40 – 60 |
| Bearing Bore 1 Diameter | 52 mm | 30 – 80 |
| Bearing Bore 2 Diameter | 80 mm | 40 – 120 |
| Bearing Bore 3 Diameter | 90 mm | 50 – 140 |
| Foot Height | 20 mm | 10 – 30 |
| Foot Length | 80 mm | 50 – 120 |
| Foot Width | 60 mm | 40 – 100 |
| Foot Mounting Hole Diameter | 15 mm | 10 – 25 |
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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