Summary

Two original axles have broken. I suspect the force during cornering was too great.

Anyway, here is a replacement axle. It works perfectly.
Depending on the printer, it may be necessary to adjust the diameters. Especially with the wheels, these should fit quite well.

i printed it quite flat - see one of the photos.

Print Settings

Printer Brand:

Creality

                                            <p class="detail-setting printer"><strong>Printer: </strong>                     <div><p>Ender 5</p></div></p>                                                                                <p class="detail-setting rafts"><strong>Rafts: </strong>                     <div><p>Doesn't Matter</p></div></p>                                                                                <p class="detail-setting supports"><strong>Supports: </strong>                     <div><p>Yes</p></div></p>                                                        <br>                        <p class="detail-setting notes"><strong>Notes: </strong>                    </p><div><p>Depending on the printer, it may be necessary to adjust the diameters.<br>Especially with the wheels, these should fit quite well.</p><p>I printed it quite flat, with the flat sides on the side - see one of the photos.</p></div>

Post-Printing

You have to scrape of the remains of the support - then the parts f Codix will fit fine.

Replacement axle for the Kosmos Codix Roboter