Replacement Suitcase Wheel — 49 mm (with FreeCAD source)

This is a small replacement wheel for a suitcase. Nothing revolutionary, nothing dramatically over-engineered — just a simple wheel that happened to become surprisingly useful.

About the model

This model is an almost exact copy of the wheel from my airport suitcase. I made it mainly for myself, but there is a small chance that it may also be useful to someone else who has a similar suitcase, a broken wheel, and a 3D printer nearby.

The model was designed in FreeCAD, and the source files are included.

Key dimensions

• Wheel diameter: 49 mm

• Inner hole radius for the axle: 1.5 mm

• Wheel width: 11.5 mm without the axle-side widening

• Total width: 14.5 mm including the axle-side widening

Please check the dimensions carefully before printing. Suitcase wheels are not standardized as much as we would like them to be.

Printing recommendations

I strongly recommend printing this part from PETG.

Recommended print settings:

• Material: PETG

• Infill: 60% or higher

• Wall/perimeter count: as high as reasonably possible

• Layer adhesion should be prioritized over speed

• Avoid brittle materials for real use

This is a functional part that takes mechanical load, impacts, vibration, and long rolling distances. A pretty print is nice, but a strong print is more important here.

Possible improvements

A better version of this wheel could probably be made with a TPU outer tire/rim. That would make it quieter, softer, and more similar to a real suitcase wheel.

However, even in this simple solid PETG version, the first prototype performed surprisingly well. It successfully survived constant travel through roads and surfaces of very different quality in more than three countries.

This wheel (with 60% infill and 6 walls) has rolled through Qatar, two cities in Japan, four cities in China, Kyrgyzstan and Russia and looks good (you can see it on the second image). So while it may look like a very small and unnecessary object, it has already had a more international life than many “serious” printed parts. :)

Notes

This model was made for my own suitcase, so compatibility with other suitcases is not guaranteed. Still, if your wheel dimensions are close, it may be a useful starting point or a quick emergency replacement.

Use it as a repair part, a reference model, or simply as a small tribute to the strange but satisfying world of 3D printing functional things.

As they say, every 3D printing hobbyist must do two important things in life:

1. Buy a 3D printer.

2. Print their own wheel.

Apparently, I was not an exception.