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2. Installation
50
2.3.2 Installation of the Main Unit
The surface to mount the main unit should be a machined surface or a plane that possesses an
equivalent accuracy and the flatness should be within 0.05mm/m. Also, the platform should have a
structure stiff enough to install the unit so it would not generate vibration or other abnormality.
Also consider enough space necessary for maintenance work such as actuator replacement and
inspection.
There are datum surfaces for attachment on the base.
The flatness of the slider movement is designed to be 0.05mm/m at maximum to the datum surface.
On the rear side of the actuator, there are tapped holes and through holes for attachment and reamed
hole and oblong hole for positioning. See the appearance drawings for the details of the position and
diameters. [Refer to 5. External Dimensions”]
Utilize the reamed holes when repeatability in the attachment after detaching is required. However, when
small tunings such as the perpendicularity is required, consider such things like to use one reamed hole.
[1] Using the Tapped Holes on the Bottom of the Base
This actuator has the tapped holes for mounting so it can be fixed from the bottom of the base.
(Note that tapped hole size depends on the model. Please see the diagrams below and 5 “External
Dimensions”.)
Also, there are reamed holes and a slotted hole for positioning pins.
Tightening Torque
Model
Name
Tapped
Hole
Size
Tapped Holes Depth In the case that steel
is used for the bolt
seating surface:
In the case that
aluminum is used for the
bolt seating surface:
Reamed
Hole [mm]
Oblong Hole
SA4C
SA4R
M4
Through
(screwing depth
should be 6mm max.)
3.59N•m
(0.37kgf•m)
1.76N•m
(0.18kgf•m)
I
3H7
Depth 4
A:3 B:4 Depth 4mm or less
SA6C
SA6R
M5
Tthrough
(screwing depth
should be 10mm max.)
7.27N•m
(0.74kgf•m)
3.42N•m
(0.35kgf•m)
I
4H7
Depth 5.5 A:4 B:5 Depth 5.5mm or less
SA7C
SA7R
M5
9mm
7.27N•m
(0.74kgf•m)
3.42N•m
(0.35kgf•m)
I
4H7
Depth 6
A:4 B:5 Depth 6mm or less
Reamed Hole
Oblong Hole
Tapped Hole
Through Hole
Oblong Hole
+0.010
0
+0.012
0
+0.012
0