Page 16
KataEX
Assembly
Step #11:
optional —
install lockout set screws
Default rotation of the fixed arms and motion arms is 360°. Lockout set
screws limit rotation to 180°, either to the left or to the right.
• To lockout rotation, install an M4x15 set screw in the underside of the arm stem
or fixed arm. Use the 4mm Allen key. Tighten the screw, then back it off one turn.
— Installing a set screw in the front hole allows 180° rotation to the right only, as
shown at right. A set screw in the rear hole allows 180° rotation to the left only.
— In the example below, to prevent the inner fixed arms from rotating to the rear (a
left rotation with the left arm and a right rotation with the right arm), install a set
screw in the front hole on the left arm stem and in the rear hole on the right arm
stem. The outer fixed arms are allowed their full 360° of rotation, so no set screw
is installed at the end of the inner fixed arms.
• The fixed arm or motion arm must be in its allowed range of rotation when installing
the lockout set screw.
• The lockout function is not recommended to apply to a head adapter, either at the
end of a fixed arm or at the end of a stem arm.
M4x15
set screw
2mm
Allen key
front
rear
180°
180°
monitor
not shown
right rotation only
in this example
It is never
required
to lockout rotation in one direction or the other. As long as
the workstation has a consistent user who understands how over-rotation might
damage the monitor or its surroundings, monitor arm movement does not need
to be restricted by set screws. Healthy precautions never hurt, however — if the
restrictions are well-planned and the set screws are installed correctly.
The starting point of left or right 180° rotation
is with the arm stem and monitor arm (or two
monitor arms) forming a straight line. A front
set screw prevents left rotation from that point
and a rear set screw prevents right rotation.
It’s helpful to arrange monitors in their approximate final locations and decide if
and where rotation restrictions are useful. These diagrams show a few examples.
When should you lockout left or right rotation?
180°
left
overhead view
monitor
arm
arm stem
monitor
180°
right
With the arm stem and monitor arm straight
toward the user (far left), typically no
rotation restrictions add value.
However, with the arm stem
pointing to the side (near
left), preventing rotation
to the left is definitely a
good idea.
After arranging the three monitors in
this configuration, you can see that the left monitor
monitor arms do not need to rotate to the left and the right
monitor arms do not need to rotate to the right. You can lockout those
rotations, if desired. However, for flexibility of usage, you may decide not to lockout
the monitor arms at the arm stems. There may be instances when a rear rotation is useful.
front
rear
front = no left rotation
rear = no right rotation
180°
180°
360°
monitors
not shown
360°
outer
fixed arm
head
adapter
inner
fixed arm
front
rear
front
rear
IMPORTANT:
Remember to never position a monitor behind the mounting base location. Take this into account when installing lockout screws.
