Prusa i3 Rework X axis assembly
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Introduction | Bill of materials | Y-axis assembly | X-axis assembly | Connecting X-axis and Z-axis | Motor assembly
X and Y-axis motions | Heated bed assembly | Extruder assembly | Electronics and wiring | Marlin Firmware
X End Idler & X End Motor assembly
Needed parts :
- X End Idler
- X End Motor
- 1x 624 ball bearing
- 4x LM8UU linear bearing
- 1x Endstop
- 2x M5 nut
- 1x M4x20 mm screw
- 1x M4 nut
- 2x M3x14 mm screw
- 2x M3 nut
Please take note that Step 1 is if you are using the vanilla Prusa I3 and is not required if you use the RP designed for the Reworked version found at https://www.thingiverse.com/thing:119616
Step 1
Drill with an 8 mm drill X End Idler and X End Motor holes (displayed in green). Do not drill deeper than 20 mm on the X End Motor. Set counterclockwise rotation and drill progressively and carefully along the axis.
Step 2
Push two LM8UU linear bearings in the X End Idler and two LM8UU linear bearings in the X End Motor. They can be pushed with hands but you can use a rubber mallet carefully if necessary.
Step 3
Insert an 624 ball bearing (the smallest) between the X End Idler and slide an M4x20 mm screw.
You may have to force the screw into the part. Fix them with an M4 nut and tighten slightly.
Step 4
Insert two M5 nuts in their marks. In order to do that, thread a threaded rod M5x300mm opposite to the nut. Slightly heat the nut using a lighter or a blowtorch then pull the rod. Be careful with this operation.
Step 5
Affix one endstop with two M3x14 screws and two M3 nuts on the X End Idler.
X Carriage
Needed parts :
- X Carriage
- 4x LM8UU linear bearing
- Zip-ties
Insert four LM8UU linear bearings on the X Carriage and fix them with eight zip-ties. Make sure to put the « head » of the zip-tie on bearings side.
X-Axis assembly
Step 1
Push two smooth rods Ø8x370 mm through the X End Motor. Use a rubber carefully if necessary. The excess length is about 345 mm.
Step 2
Slide the X Carriage assembly carefully through smooth rods.
Step 3
Insert the X End Idler assembly and adjust the distance between both Z-axis (about 362 mm).