Gears and transmission
Compound Precision Spur Gear with Hub and Keyways
- Bounding box
- 84.0 × 84.0 × 36.0 mm
- Engine
- Precision B-rep
- Parameters
- 17
- Published
- September 4, 2026
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The prompt
Precision Involute Spur Gear with Hub and Keyway: Module (m) of 1.0 mm, 40 teeth (z), Pitch Circle Diameter (d) of 40.00 mm, 20° pressure angle (alpha), 6.00 mm face width (b), and a 12.70 mm (+0.011 / +0.000) bore diameter (d_b) with an H7 fit. Features a DIN 6885/1 keyway measuring 4.0 mm × 2.0 mm, backlash tolerance of 0.05–0.08 mm, 58–62 HRC induction-hardened AISI 4140 chromoly steel construction, and tooth flank surface roughness of Ra 0.4 µm.
Parameters
| Name | Value | Range |
|---|---|---|
| Module (m) - Existing Gear | 2 mm | 0.5 – 5 |
| Teeth (z) - Existing Gear | 40 count | 10 – 120 |
| Pressure Angle - Existing Gear | 20 deg | 14.5 – 25 |
| Face Width (b) - Existing Gear | 15 mm | 4 – 50 |
| Bore Diameter - Existing Gear | 15 mm | 6 – 30 |
| Keyway Width - Existing Gear | 5 mm | 2 – 10 |
| Keyway Depth - Existing Gear | 2.3 mm | 0.5 – 5 |
| Module (m) - New Gear | 1 mm | 0.3 – 3 |
| Teeth (z) - New Gear | 40 count | 10 – 150 |
| Pressure Angle - New Gear | 20 deg | 14.5 – 25 |
| Face Width (b) - New Gear | 6 mm | 2 – 30 |
| Bore Diameter (db H7) - New Gear | 12.7 mm | 5 – 25 |
| Keyway Width - New Gear | 4 mm | 1 – 8 |
| Keyway Depth - New Gear | 2 mm | 0.5 – 4 |
| Hub Diameter | 24 mm | 15 – 36 |
| Hub Length | 15 mm | 5 – 40 |
| Backlash | 0.07 mm | 0 – 0.2 |
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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