There may be times you need to adjust bearing stick out on the rail bearings.
If you look at the picture below, you’ll see 4 green arrows pointing to holes. These holes have grub screws inside. These grub screws hold the 4 bearings in each gantry block. There are 4 holes and grub screws on either side of the block, for a total of 2 grub screws holding each bearing in place.
To adjust each bearing, simply loosen the two corresponding grub screws adjust the stick out of the bearing, and retighten the grub screw.
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