Gears and transmission
Spur Gear m3 z20 with Keyed Bore
- Bounding box
- 66.0 × 66.0 × 30.0 mm
- Engine
- Precision B-rep
- Parameters
- 7
- Published
- October 28, 2026
Download
Free to download and use. See the terms.
The prompt
A mechanical spur gear with a module (m) of 3 mm, number of teeth (z) equal to 20, face width (thickness) of 30 mm. The outer tip diameter (da) is 66 mm, the pitch diameter (d) is 60 mm, and the root diameter (df) is 52.5 mm. It has a central bore hole with a diameter of 25 mm, featuring a keyway slot of 8 mm width on top of the inner bore. Modeled precisely with Steel 45 material properties.
Parameters
| Name | Value | Range |
|---|---|---|
| Module (m) | 3 mm | 1 – 6 |
| Number of Teeth (z) | 20 - | 8 – 60 |
| Face Width | 30 mm | 5 – 60 |
| Helix Angle | 0 deg | 0 – 30 |
| Bore Diameter | 25 mm | 6 – 40 |
| Keyway Width | 8 mm | 2 – 14 |
| Keyway Depth (hub side) | 3.3 mm | 1 – 6 |
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.
More models
Browse the full gallery →Spur Gearbox
design gearbox
Involute Spur Gear with Keyway
Precision Involute Spur Gear with Hub and Keyway: Module (m) of 2.0 mm, 40 teeth (z), Pitch Circle Diameter (d) of 80.00 mm, 20° pressure angle (\alpha), 15.00 mm face width (b), a
Parametric Helical Gear
Create a parametric helical gear with the following specifications: 32 teeth, normal module of 3 mm, right-hand helix, total face width of 80 mm, and a central bore hole with a dia
Rod with Spur Gear
Metal rod diameter is 20 mm and length is 100 mm and right side attach a gear and their OD is 50 mm
Spur Gear (12 Teeth)
Built a gear with 12 teeth
Two-Stage Spur Gear Reduction Assembly
Design a 2-stage spur gear reduction set for 3D printing with an overall 10:1 ratio. Stage 1: A 12-tooth pinion driving a 36-tooth gear (3:1). Stage 2: A 12-tooth pinion coupled