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Appendix 5. Explanation of Small Capacity Spindle Drive Unit Specifications
CAUTION
1. Do not hold the front cover when transporting the spindle drive unit. The drive
unit could fall off and cause injury.
2. Always observe the installation direction. Failure to do so could result in
faults.
3. Provide the specified distance between the spindle drive unit and inner
surface of the control panel or other devices. Failure to observe this could
result in faults.
(Note 1) When installing in a poor environment (factory with high levels of oil mist), install a filter at the
intake section of the partition showed with the dashed line in (d) item (Example 2).
(Note 2) Make sure that cutting chips from the drill, etc., do not enter the spindle drive unit when
assembling the control panel.
(Note 3) Provide means so that oil, water and cutting chips, etc., do not enter the spindle drive unit from
the control panel clearances or the ceiling fan.
(Note 4) When using the product in a place with high levels of harmful gases or dust, protect the spindle
drive unit with air purging (feed in clean air from outside so that the pressure in the storage
panel is higher than outside to prevent the entry of harmful gases or dust).
(2) Installation of cooling fan
Each unit (excluding types without fins) is individually provided with a cooling fan (FAN1 shown
below). However, install additional fans (FAN2 shown below) by the user in consideration of
operation continuity when fan stops due to degradation of the environment around the fan and
improvement of maintenance.
When using the totally closed type unit
installation method and the box structure in
which cutting oil and dust, etc., easily enters
the unit's fan + fan section (a structure
where the fan may stop easily due to the
working environment), the user should add
a fan at the FAN2 position shown on the
right. Carry out forced cooling with the
velocity set to 2m/s or more. Also take the
serviceability into consideration in this case.
Inside box
Outside box
Wind
direction
FAN1 (mounted on unit as
standard)
FAN2 (Additionally installed
by user)
* Install a finger guard for
safety.
(Inside box)
Wind
direction
Power supply
FAN3
(Additionally installed by user)
Velocity 2m/s or higher
* Install a finger guard for safety.
Spindle drive
Due to the structure, heat will tend to
accumulate at the top of each unit. Thus,
install a fan in the power distribution box to
agitate the heat at the top of each unit.
Front view of units
A5 - 7