Bearing support for use with Inner Y rail mount

I like a lot of tension on my Y belt, and I was worried that only having one side of the NEMA motor shaft supported could cause damage over time. So, this is an attempt at reinforcing that shaft by adding a bearing on the other side. This requires a single 605ZZ 5x14x5 5mm/14mm/5mm 605Z Miniature Ball Deep Groove Radial Ball Bearings, though you can add two of them if you have a particularily long motor shaft.