Instruction Manual

Chapter 2 Installation2.3 How to Install

• When Using Foot Brackets (Option)

When installing the unit with using the foot brackets, use the T slots as for the direct installation

and affix with hex socket head cap screws.

Actuator

Type

A B C D E

Recommended

attachment screw

Tightening Torque [N•m]

RA4C 71 57 20 10

I6.6 through

hole

M6 5.36

RA6C 95 79 25 12

I9 through hole

M8 11.48

Regarding attachment screws

• Use of high-tension bolts meeting at least ISO-10.9 is recommended.

• 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 attention when selecting screws. If a bolt out of the instruction is used, it may

cause damage on tapped holes or unexpected accident or failure due to insufficient

strength on the actuator attachment.