IAI America LSA-L15SS - Manual (Page 40)

2. Installation
34
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.
The side surfaces and bottom surface of the base of the body have good parallelism to the guide.
Utilize these surfaces when accuracy in the actuator drive is required.
٧ Small Type H8SS, H8SM, H8HS, H8HM
This actuator base has tapped mounting holes that can be used to affix the actuator from its back
(take note that the tap size is different depending on the model: Refer to the figure below and “8.
External Dimensions”.)
There are also reamed holes for accepting positioning pins.
50
Tightening Torque
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:
Pitch
[mm]
Reamed Hole
[mm]
M5
5mm or more
10mm or less
7.27N·m
(0.74kgf·m)
3.42N·m
(0.35kgf·m)
50 I 4H7, depth 5
About Tightening Screws
• Use a hex socket head cap bolt for the attachment to the base.
• It is recommended to use high-tensile bolts with ISO-10.9 or more.
• Make sure to have the effective length of bolt engagement described below or more for the
tightening of a bolt and a female screw.
When female screw is on steel ĺ Thread length same as nominal diameter
When female screw is on aluminum ĺ Thread length 1.8 times longer them nominal diameter
Caution: Pay special attention when selecting the bolt length. In case that an inappropriate
length of a bolt is applied, it may cause damage on the tapped holes or insufficiency
in attachment strength, which may result in a drop in the operation accuracy or an
unexpected accident.