Okay on a space and accuracy level, are using Oilite type bushings worth doing over linear bearings? This is doing improvement and part rebuild of a Marchant Dice MDL-TR-2 gantry router. I am building a new Z for it so that I can mount the A axis I have for it on board and starts being able to cut both sides of an item and let the machine do the flip. Going to linear bearings takes about 30mm of travel out of Y due to the required widening of the Z body to allow for the bearing blocks. On the other hand it will increase smooth play of travel.

So, any and all input as I am really up in arms on it and it is bottle necking this point in the design structure.

Thanks for all the input you have given.

Michael