A bearing of dimensions of 22mm is required, those for skateboard works with it (That's what i use :)). I've made the sketch from AutoCAD2017 and then I import it for making the 3D form with SolidWorks 2016. I've put all the file from Solidworks in the ZIP file (If you have an older SW please use the .STEP file). I also put the CURA file in it.

Please also note that this part was shared under non-commercial license, please respect the designer. If you want to sell this design, contact me, we can figure something out.

Thanks for downloading it :)

P.S : All the dimensions in the photo of the sketch are in mm.