User Manual

2. Installation

[4] When using Front Flange (Option)

There are holes for attachment on the front flange. Utilize these holes for the installation.

The attachment holes are located as shown below;

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Make sure to follow “[6] Caution for Installation using Front Housing and Front Flange”

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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

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Caution: Pay attention when choosing the screw length. In case that insufficient length of screws is chosen,

it may cause such problems as the strength not being enough on the actuator attachment,

interference with driving part, drop in accuracy performance and unexpected accidents.

Model Name Applicable Screw Diameter A B C D

RA5C/RA5R Front Flange M6 65 30 10

I6.6

RA6C/RA6R Front Flange M8 76 33 12

I9