Gears and transmission
Motorized Belt Drive Assembly
- Bounding box
- 180 × 60 × 100.4 mm
- Engine
- 3D Printing B-rep
- Parameters
- 25
- Published
- November 4, 2026
Download
Free to download and use. See the terms.
The prompt
A complete motorized belt-drive assembly consisting of multiple distinct parts arranged together: 1. Chassis: Two flat 3mm-thick acrylic side plates spaced 40mm apart. Each plate is 180mm long. One end has a 55x50mm flange, the other end has a 40x40mm flange, connected by a 22mm tall middle bridge. 2. Standoffs: Four cylindrical standoffs (6mm outer diameter) spacing the two acrylic plates exactly 40mm apart at the corners. 3. Motor: A cylindrical DC gear motor (37mm diameter) mounted to the front flange of one of the side plates. 4. Drive Pulley: A 30mm diameter V-belt pulley attached to the motor shaft. 5. Driven Pulley: A larger 55mm diameter V-belt pulley mounted on a 4mm shaft at the opposite end of the acrylic plates. 6. Belt: A thin rubber drive belt connecting the 30mm drive pulley and the 55mm driven pulley. Assemble these parts into a functional mechanical layout.
Parameters
| Name | Value | Range |
|---|---|---|
| Side plate length | 180 mm | 100 – 300 |
| Side plate thickness | 3 mm | 2 – 5 |
| Gap between side plates | 40 mm | 20 – 80 |
| Front flange length | 55 mm | 30 – 100 |
| Front flange height | 50 mm | 30 – 100 |
| Rear flange length | 40 mm | 20 – 80 |
| Rear flange height | 40 mm | 20 – 80 |
| Middle bridge height | 22 mm | 12 – 60 |
| Plate corner fillet | 4 mm | 0 – 10 |
| Standoff diameter | 6 mm | 4 – 12 |
| Standoff length | 42 mm | 30 – 100 |
| Standoff inset from plate ends | 8 mm | 4 – 30 |
| Standoff-to-plate-edge gap | 1 mm | 0.5 – 6 |
| Motor body diameter | 37 mm | 20 – 60 |
| Motor body length | 55 mm | 30 – 120 |
| Motor shaft diameter | 6 mm | 3 – 12 |
| Motor shaft length | 20 mm | 10 – 60 |
| Drive pulley diameter | 30 mm | 15 – 60 |
| Driven pulley diameter | 55 mm | 20 – 120 |
| Pulley width | 14 mm | 6 – 30 |
| V-groove depth | 3 mm | 1 – 8 |
| V-groove width | 7 mm | 3 – 16 |
| Driven shaft diameter | 4 mm | 3 – 12 |
| Belt thickness | 4 mm | 2 – 8 |
| Belt width | 5 mm | 2 – 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.
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