bearing, followed by an M5 washer, and then
another 625 bearing. DON’T FORGET THE
WASHER BETWEEN THE TWO BEARINGS OR THEY
WON’T SPIN. Secure all of this with an M5 Nylock
nut. You want to get this good and snug, but
don’t go crazy. Looking down at the Z Axis plate in
the orientation shown in the diagram above, you
should have the head of the M5 bolt, an M5
washer, the Z Axis Plate, a 10mm aluminum
spacer, a 625 bearing, an M5 washer, another
625 bearing, and a Nylock nut. Install the other
idler this same exact was in the other hole
labelled with letter (A).
Now locate your linear bearing blocks. Notice in
the diagram that the top left of the Z Axis Bearing
Plate has two holes marked (B) and two marked
(C). The other three bearing blocks have all
(B) holes and use M4x10 screws with split-
lock
washers. Install these bearing blocks on the Z Axis Bearing plate with M4x10 screws and M4
split-lock washers in the holes marked (B). You should see the heads of the screws when
looking at the Z Axis Bearing Plate in the orientation shown in the diagram above. The bearing
blocks should be on the back side of the plate.
The top left two holes are labelled (C) and will be used to mount the spring stud bracket. Use
M4x14 screws with a split-
lock washer to mount the Spring Stud Bracket to the plate. You’ll
screw into the bearing block to secure this. Looking at the Z Axis Bearing Plate in the orientation
shown in the diagram, you should have the screw head, an M4 split-lock washer, the Spring
Stud Bracket, the Z Axis Bearing Plate, then the linear bearing block. Make sure you get the
orientation of this spring stud bracket correct. Slide an M6 flat washer onto the M6x50 screw
then put it in the slot in the Spring Stud Bracket with the screw threads pointing towards the
back of the Z Plate. Secure it with an M6 split-lock washer and an M6 nut. Slide one loop of the
extension spring onto the threads of the
M6x50 screw you just installed.
Sandwich the loop of the spring between
the M6 nut you already have installed
and another M6 nut so that the spring
naturally points to about the 10 o’clock
position. Looking at the Z axis plate in
the orientation shown above, you should
have the head of the M6 screw, a flat
washer, the Spring Stud Bracket, an M6
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