Printable 20-tooth GT2 idler pulley with ball bearings

This GT2 idler pulley runs on two F604 ZZ ball bearings.

3D printer parts and enhancements

Creative Commons Attribution Share Alike

Commercial use is allowed, you must attribute the creator, you may remix this work and the remixed work should be made available under this license.

Learn more or download attribution tags


I needed an idler pulley with 20 teeth for a GT2 belt on my delta printer that run on ball bearings. Because I couldn't find an industrial made pulley on the internet that was available quickly, I designed this one that uses two F604 ZZ ball bearings. It can be used with the 6mm GT2 belts commonly used in 3D printers. The height of the assembled pulley is 15.2mm.

Materials and methods

2 x F604 ZZ ball bearings



Issues are used to track todos, bugs or requests. To get started, you could create an issue.


0e8448b27589a0f0cee7235878eed9cd?default=blank&size=40edy added this to the cnc collection ago
Dce8d2f4c4f5c55ce4807e7e43a9df60?default=blank&size=40my.kosz added this to the Przekładnie collection ago
E1a4f09a8e8c8a57bd5a2cb636e8c2ce?default=blank&size=40Mon Sevilla added this to the cosas chulas collection ago
19058bd73fcdd07df955f84cb1c47e37?default=blank&size=40sapimen added this to the teste collection ago
9e9f7b586c47c5c88b0abc134983a517?default=blank&size=40Jason Stokes added this to the printer upgrades collection ago
3da49e5f162182fd3caf735ba7db70a3?default=blank&size=40Louis Garcia added this to the RepRap collection ago
63385db409d0617e87f6ae2b6f6c8cc5?default=blank&size=40JimHs1 added this to the Jims collection ago
Mini retrato500x500skymaker commented ago

I Like it, but...

Why flange bearings?

Mini img 0030Alex Skoruppa published this design ago