HackerBot Z system
Contents
Z System assembly
qty | part name | description/notes |
2 | SC12LUU | 12mm linear bearing with housing |
8 | M8x20 socket cap hex screw with washers | |
1 | Print area support L-shaped | File:Print area support-L-shaped plate.PDF |
1 | Z endstop | |
1 | Trapezoidal screw | 12x2 or 12x3 |
1 | Trapezoidal nut | 12x2 or 12x3 |
4 | M4x20 hex screw and nut | Trapezoidal nut screws |
4 | SK10-kit | rod T-supports with screw kit |
1 | Z-Stepper plate | |
1 | Print area support | L-shaped aluminum support |
Step 26: Z axes and trapezoidal thread
qty | part name | description/notes |
1 | Trapezoidal screw 12x3, total length: 380mm | 12mm should be machined to 8mm diameter |
2 | Z shaft 10mm length 390mm | 10mm |
Screw the trapezoidal thread in the nut and to the L-shaped plate.
Insert the two shafts in the SC10LUU bearings
Step 27: Z stepper motor assembly
qty | part name | description/notes |
1 | Z Stepper motor | nema 17 1.7A |
4 | M3x20 hex screws + washer | |
1 | Motor-Trapezoidal coupler | flexible coupling 5 mm and 8 mm diameter |
Take the stepper motor for the z-axis and join the motor shaft toward top to stepper plate with the screws and washers (stepper motor kit of this section checklist).
On the other side of the stepper plate, add the flexible coupling to the motor shaft (5mm of diameter).
Step 28: Assembly of z-axes on structure
qty | part name | description/notes |
4 | SK10 Shaft support | 10mm shaft |
8 | T-nut (Bosch 3842523925) | used for stepper plate and SK10 |
8 | T-Bolts (Bosch 3842523920) | used for stepper plate and SK10 |
Check: the holes of shaft supports (SK10) should be drilled to 6mm of diameter.
Fasten the SK10 shaft supports to the mid-rear and upper z profiles with T-head bolts. Insert the z-axes in shaft support holes.
Lightly tighten bolts and check if the L-Shaped support plate goes up and down without problems.
You need to align correctly the Z systems by hand with an help of a caliper.
Step 29:Print plate (Heatbed)
qty | part name | description/notes |
1 | Aluminium BED support | File:Aluminium heatbed support.dwg |
5 | M5x20 - washer - nut |
Step 30: Z Endstop holder
qty | part name | description/notes |
1 | Z endstop tuning support | File:Z Endstop tuning.pdf |
1 | Z endstop knob | use a grub screw to fix M4 threaded rod |
1 | Z endstop spring | |
1 | M4 threaded rod length 60mm | |
1 | Collar nut (Bosch 3842523925) | used for Z endstop tuning support |
1 | T-Bolts (Bosch 3842523920) | used for Z endstop tuning support |
Assemble Z endstop knob, M4 threaded rod with a grub screw (or use Loctite 243):
Assemble the tuning support, knob and bolt: