About this 3D model

In Mendel and Prusa belt Y-axis is carried out through two bearings 608. Under the strap is a lot of empty space, which can be used to increase the movement on the axis Z. I tried to hold the belt as the axis X. This made the bearing bracket. I used the factory pulley 10XL037RSB ( SKF). For the plastic pulley to another carrier (axle bearing to move down a bit.) Pros: a bearing 608, an increase in movement along the Z axis