2. Installation
28
Tightening Screws
x
Use hexagonal socket head bolts for the male threads for installing the base.
x
Use of high–tension bolts meeting at least ISO 10.9 is recommended.
x
For the effective engagement length between the bolt and female thread, provide at least the
applicable value specified below:
Female thread is made of steel material
ĺ
Same length as the nominal diameter
Female thread is made of aluminum
ĺ
1.8 times of 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 a drop in the operation accuracy or an
unexpected accident due to a damage to the female thread, insufficient strength of
actuator attachment or an interference with the operating area.