Gears and transmission
Exploded Single-Stage Worm Gearbox Assembly
- Bounding box
- 2461.0 × 70.0 × 96.0 mm
- Engine
- Precision B-rep
- Parameters
- 60
- Published
- November 14, 2026
Download
Free to download and use. See the terms.
The prompt
Create a complete parametric 3D CAD assembly of a single-stage worm gearbox designed to drive a square-shaft ball valve. The gearbox consists of the following components: 1. Worm shaft (metal) Single-start cylindrical worm shaft made of steel. Mounted horizontally and driven by a stepper motor. The worm shaft is connected to the stepper motor shaft using a rigid shaft coupling secured with a grub screw. Support the worm shaft with suitable ball bearings. Include bearing seats, shoulders and retaining features. 2. Worm wheel (plastic) Single-stage worm wheel made of engineering plastic, such as POM. The worm wheel meshes correctly with the metal worm shaft. The worm wheel is mounted vertically at a 90-degree angle to the worm shaft. Include a central square bore matching the square output shaft. The worm wheel must transmit torque directly to the square shaft. 3. Output shaft Square steel shaft passing through the worm wheel. The shaft drives a square-shaft ball valve. Include suitable shaft support and retention features. Allow sufficient clearance for assembly and rotation. 4. Stepper motor Show a realistic stepper motor mounted to the gearbox housing. Include a mounting flange and mounting screws. Align the motor shaft precisely with the worm shaft coupling. 5. Gearbox housing Design a compact, robust, two-piece housing. Include separate bearing seats for the worm shaft and output shaft. Include mounting flanges and screw holes. Add a removable housing cover secured with bolts. Include realistic wall thicknesses, clearances and space for assembly. Provide access to the worm wheel and bearings for maintenance. 6. Complete assembly Position all components correctly. Show the worm and worm wheel meshing at 90 degrees. Include all necessary bearings, screws, washers, retaining rings and shaft couplings. Use separate, editable solid bodies for every component. Apply realistic materials: steel for the worm shaft and output shaft, POM plastic for the worm wheel, and aluminium for the housing. CAD requirements: Create a fully editable parametric mechanical CAD assembly. Ensure that all components fit together geometrically. Use realistic mechanical proportions. Provide an exploded view and an assembled isometric view. Export the complete assembly and individual components as STEP files.
Parameters
| Name | Value | Range |
|---|---|---|
| Exploded Layout Gap | 150 mm | 60 – 400 |
| Housing Length X | 90 mm | 60 – 160 |
| Housing Width Y | 70 mm | 40 – 140 |
| Housing Height Z | 45 mm | 30 – 100 |
| Housing Wall Thickness | 4 mm | 2 – 10 |
| Worm Axis Height | 30 mm | 15 – 70 |
| Worm Bearing Seat Diameter | 22 mm | 14 – 40 |
| Output Bearing Seat Diameter | 24 mm | 14 – 50 |
| Cover Screw Clearance Dia | 3.4 mm | 2.5 – 6 |
| Cover Boss Diameter | 8 mm | 5 – 16 |
| Cover Boss Height | 20 mm | 5 – 40 |
| Motor Flange Thickness | 6 mm | 3 – 15 |
| Motor Flange Size | 42 mm | 30 – 80 |
| NEMA 17 Mount Spacing | 31 mm | 20 – 60 |
| Motor Mount Screw Clearance Dia | 3.4 mm | 2.5 – 6 |
| Cover Plate Thickness | 8 mm | 3 – 20 |
| Cover Access Opening Dia | 30 mm | 12 – 60 |
| Worm Shaft Total Length | 80 mm | 50 – 160 |
| Worm Outside Diameter | 12 mm | 6 – 30 |
| Worm Journal Diameter | 8 mm | 4 – 20 |
| Worm Coupling-End Diameter | 6 mm | 3 – 15 |
| Worm Journal Length | 10 mm | 4 – 30 |
| Worm Coupling-End Length | 15 mm | 5 – 40 |
| Worm Retaining Groove Dia | 7.2 mm | 3 – 18 |
| Worm Retaining Groove Width | 1 mm | 0.5 – 4 |
| Worm Wheel Outside Dia | 45 mm | 20 – 100 |
| Worm Wheel Thickness | 12 mm | 5 – 30 |
| Square Bore Size | 10 mm | 5 – 20 |
| Worm Wheel Tooth Count | 24 | 8 – 60 |
| Tooth Gap Cutter Dia | 4 mm | 1 – 10 |
| Square Output Shaft Size | 10 mm | 5 – 25 |
| Square Output Shaft Length | 90 mm | 40 – 200 |
| Motor Body Length X | 40 mm | 20 – 80 |
| Motor Body Width Y | 42 mm | 20 – 80 |
| Motor Body Height Z | 42 mm | 20 – 80 |
| Motor Shaft Dia | 5 mm | 2 – 12 |
| Motor Shaft Length | 20 mm | 5 – 50 |
| Coupling Outside Dia | 12 mm | 6 – 30 |
| Coupling Length | 20 mm | 8 – 60 |
| Coupling Motor Bore | 5 mm | 2 – 12 |
| Coupling Worm Bore | 6 mm | 2 – 14 |
| Coupling Grub Screw Hole Dia | 3 mm | 1.5 – 6 |
| Worm Bearing Bore | 8 mm | 3 – 20 |
| Worm Bearing Width | 7 mm | 3 – 20 |
| Output Bearing Thickness | 6 mm | 2 – 20 |
| Fastener Shank Dia | 3 mm | 1.5 – 8 |
| Cover Bolt Length | 10 mm | 4 – 30 |
| Motor Screw Length | 12 mm | 4 – 40 |
| Grub Screw Length | 4 mm | 2 – 12 |
| Socket Head Dia | 5.5 mm | 2 – 14 |
| Socket Head Height | 2 mm | 0.5 – 8 |
| Washer Inside Dia | 3.2 mm | 1.5 – 10 |
| Washer Outside Dia | 7 mm | 3 – 20 |
| Washer Thickness | 0.6 mm | 0.2 – 3 |
| Retaining Ring Bore | 8 mm | 3 – 20 |
| Retaining Ring Outside Dia | 12 mm | 6 – 30 |
| Retaining Ring Thickness | 1 mm | 0.3 – 4 |
| Valve Interface Outside Dia | 20 mm | 10 – 50 |
| Valve Interface Length | 12 mm | 4 – 40 |
| Valve Square Socket Size | 10 mm | 5 – 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.
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
Meat Grinder Middle Gear
This is the middle gear of the meat grinder: large wheel Ø68 (78 teeth, helical tooth to the right), spur gear Ø20 (8 teeth), hole Ø8, total height 32 mm.