Lubricating the axes
There are two types of linear rods, and two types of bearings in Robo R2 - the extruder head and Z-axis both contain ball bearings, while the X and Y brackets contain bushings. They each must be lubricated differently, as explained in the following guide.
Extruder and Z-axis lead screw
- The extruder head contains ball bearings that slide along 6 mm rods and should be lubricated with a white lithium grease to ensure smooth travel. The two Z-axis bearings should also be lubricated with white lithium grease.
1. If using a spray can of white lithium grease, we recommend using a paper towel to apply it to the rods.
2. Once applied, move the extruder assembly around the entire gantry to make sure the ball bearings are fully covered.
- 1. When using a spray, use a paper towel to dab it onto the Z- axis lead screw. If using a drop applicator, just place three or so drops evenly across the length of the lead screw. If you don't have white lithium grease, the lubricant that came in your toolbox will work as well.
- 2. You can let the printer spread the lubricant on its own while you print, or go into motor controls and cycle through the "Raise Z" and "Home" commands to spread it after applying.
X and Y brackets
- The X and Y brackets have a smooth bushing inside of them, and need to be lubricated once every 2-4 months. We recommend using 3-in-1 oil.
1. Wipe down the four 8 mm rods that carry the X and Y brackets. An excess buildup of dirt can be detrimental to the health of the bushings over time.
2. Place a tiny amount on each rod and slide the extruder head around to help evenly spread it.