ElVa 1 Z axle 20x40x6 Bosch extrusion

It's a start of publishing a new design for 3D printers. The project is called "ElVa 1". I publish the meetings separately because I believe it will save time for our colleges to have an easier understanding the full idea design.
ZZ608, diameter 22 mm x 8 mm and height 7 mm are used as bearings. You need 4 bearings.
The length of the vertical profile must be equal to the length of the trapezoidal spindle plus 25 mm.
To fix the motor mounts (axle Z above), you need 4 dowels Ø6 mm and 4 screws,