Three profiles
V groove, O-ring groove or flat with flanges.
Pulley and wheel to 3D print
Generate pulleys with a V groove or O-ring groove, or flat wheels with flanges, with a round or D-shaped bore and a hub with a set screw. Free and online.
- Free
- No sign-up
- STL and 3MF
- Millimeter precise
- Runs in the browser
About the pulley generator
Pulleys and wheels are essential in robotics, models, clotheslines, gates and small machines. This generator makes pulleys with a V groove (for round belts or cord), a round groove for an O-ring (which becomes a tire) or flat wheels with side flanges.
The bore can be round or D-shaped, for motor shafts with a flat, and the optional hub has a radial hole for an M3 set screw.
What you can adjust
D-shaped bore
For motor shafts with a flat (e.g. 5 mm D).
Hub with set screw
A hole for an M3 screw that locks onto the shaft.
Free sizing
Diameter 10 to 150 mm, width 4 to 40 mm.
Ideas for use
- Robot wheel with an O-ring
- DC or stepper motor pulley
- Clothesline or sliding door roller
- Models and toys
- Round belt drive
How it works
- Choose the type, diameter and shaft bore.
- Click "Create in the editor": the pulley opens ready.
- Print it flat, with the hub up.
How to print
- Material
- PETG or PLA
- Layer height
- 0.16 to 0.2 mm
- Walls
- 4 perimeters
- Infill
- 50%
- Supports
- Not needed
- The D bore needs to be snug: test with a small part first.
- For an O-ring, enter the ring thickness as the groove size.
FAQ
The bore is too tight on the shaft.
Printed holes shrink a little. Increase the bore by 0.2 to 0.3 mm.
Does it work with GT2 belts?
No: this generator makes smooth grooves (V, round). For GT2, use a metal pulley or a dedicated toothed model.
Is it free?
Yes. The maker and the editor are free and run in your browser. Without an account, the project is kept for 48 hours; with a free account, it is kept in your account.
Which format do I download?
3MF (recommended: keeps colors and opens directly in Bambu Studio, OrcaSlicer and Creality Print), STL or OBJ, always in millimeters.
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