Bearing press-in tool for di=12mm, Do=21mm (Canyon MTB frame bearing)

Made this simple bearing tool to replace the frame bearing in a Canyon mountainbike. To use this, you need an additional M10 screw (length depends on your frame), 2 matching washers and a nut.

The bearing side has an additional cylinder on that the bearing can be attached. It also has a narrow protruding rim, this assures that the pressing force is applied to the outer circumference of the bearing and not to the inner ring (applying it to the inner ring can damage the bearing).

The opposite part is slightly larger than the bearing to allow it so sit on the frame hole.

Prints without support.