Root 2 CNC - Y-Axis Lead Screw

This my design for a lead screw y-axis using nema23 motors. It bolts up to the standard Root 2 CNC 2.1 Y-Axis block.

There are two motor mounts. The extended has an extra set of mounting holes the extend beyond the Y-Axis block allowing it to be bolted to something to provide extra rigidity.

There are two bearing blocks. The extended one permits using 36" tubing on the Y-Axis with 800mm leadscrews

Parts :

4 - 608 Bearings : https://www.amazon.com/gp/product/B002BBD6X4/ref=as_li_ss_tl?ie=UTF8&psc=1&linkCode=sl1&tag=wwwbethnchris-20&linkId=787274899a636388afbef7bf399e9845
32 - m4 bolts x 30mm : https://www.amazon.com/gp/product/B002BBD6X4/ref=as_li_ss_tl?ie=UTF8&psc=1&linkCode=sl1&tag=wwwbethnchris-20&linkId=787274899a636388afbef7bf399e9845
48 - m4 washers : https://www.amazon.com/gp/product/B002BBD6X4/ref=as_li_ss_tl?ie=UTF8&psc=1&linkCode=sl1&tag=wwwbethnchris-20&linkId=787274899a636388afbef7bf399e9845
42 - m4 nylock nut : https://www.amazon.com/gp/product/B002BBD6X4/ref