ElVa 1 X axle 40x20x6 Bosch extrision

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. This construction is very stable and gives very good pressure results.
The sliding bearing is RJ4JP-01-08, with a diameter of 15 mm and a length of 24 mm from the IGUS. For this assembly you need 2 pieces.
The Trapezoidal Screw M8 TR8 - 8mm 4mm 2mm - it's not importan