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3020 Z-axis bearings play
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Drilling template for additional grab screws.
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3020 and 3018 CNC The Z-axis utilizes linear bearings fixed with grab screws. Tightening these screws can cause the bearings to deflect and become oval-shaped, which may introduce play in the XZ plane. Fortunately, these bearings are made from a low-quality material, which allowed us to add square-shaped screws, eliminating any play in both directions.
-Remove grabs crews and bearings
-Use existing holes to keep the drilling template in place
-Drill 3.3 mm and tap M4
BOM:
M4x4 grab crew