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5.  RA15R, RA20R 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

Attachment 

Refer to the Instruction Manual (DVD) for the attachments of the actuator and loads. 

[Precautions for Attachments] 

No. 

Item 

Precautions 

Installation 

  Avoid using an actuator equipped with no brake when installing in 

vertical orientation 

Attachment surface 

  The base has to have a structure with sufficient rigidity to prevent 

oscillation. 

  Other than RA15R, RA20R the side and bottom surfaces of the base 

on the actuator work as the datum surfaces for the side of the rod.

 

In 

case operation accuracy is required, utilize these surfaces for 
installation. 

 
 
 

 

 

 

 

 

 

 

 

  The actuator mounting surface and other surfaces that are used as a 

datum should be flat enough with an accuracy of machining or 
equivalent treatment, and the flatness of the mounting surface needs 
to be 0.05mm/m or less. 

  Secure the space where maintenance work can be performed. 

Bolts to be used 

  For the bolts to be used, a high-tensile bolt complying with ISO-10.9 

or more is recommended. 

  If using the tapped holes, use screws with the thread length 

dimension being less than the effective depth of the holes. 

  In case the tapped hole is a through hole, be careful so the screw tip 

does not exceed the surface of the tapped hole. 

  For the actuator mounting, use a bolt with the dimension of its 

effective mating length to the tapped hole size as stated below. 

When tapped hole is on female 
→ thread length same as nominal diameter. 
When tapped hole is on aluminum 
→ thread length 1.8 times longer than nominal diameter 
However, when installing with using tap holes on actuator, set the 
RCS3-RA8R is 12mm or less, and RCS3-RA10R is 15mm or less. 
When installing with using front bracket, set the RCS3-RA15R, 
RA20R is 18mm or less. 

Attachment of tool for tip 
of the loadcell 
(prepared by user) 

  Make the weight of the tool lower than the transportable weight of the 

actuator. 

  When attaching a tool, pay attention not to apply impact load or 

unbalanced load to the loadcell or peripheral components. It may 
cause malfunction of the loadcell. 

  Inside of the loadcell cannot receive force. Make sure not to have a 

tool hit on the bottom inside the loadcell. It may cause malfunction of 
the loadcell. 

  When attaching a tool in horizontal orientation, avoid moment load 

from being applied to the loadcell. 

 

 

 

 

 

 

 

Wiring 

 

For the controller, only the dedicated controller manufactured by our company can be used. 
Use the dedicated cable enclosed in the package when connecting the actuator and the controller. 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

[Prohibited Items in the Cable Processing] 

 

    Do not pull or bend forcibly the cable so as not to give any extra load or tension to the cable. 

    Do not process the cable to extend or shortening by means of cutting out, combination or connecting 

with another cable. 

    Do not let the cable bend, kink or twist.                     

    Do not let the the cable flex at a single point. 

 

 

 

 

 

 

 

 

 

 

 

    Do not pull the cable with a strong force.                 

    Do not let the cable receive a turning force at 

a single point. 

 

 

 

 

 

 

 

 

 

 

 

    Do not pinch, drop a heavy object onto                   

  When fixing the cable, provide a moderate 

or cut the cable.                                                                slack and do not tension it too tight. 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

    Separate the I/O line, communication line and power line from each other. 

Do not store in the same duct. 

 

 

 

 

 

 

 

 

 

 

 

 

Follow the instructions below when using a cable track. 

 

    If there is an indication to the cable for the space factor in a cable track, refer to the wiring instruction 

given by the supplier when storing the cable in the cable track. 

    Avoid the cables to get twined or twisted in the cable track, and also to have the cables move freely 

and do not tie them up. (Avoid tension being applied when the cables are bent.) 
Do not pile up cables. It may cause faster abrasion of the sheaths or cable breakage. 

 

 

 

 

 
 
 
 
 
 

 

Head Office: 577-1 Obane Shimizu-KU Shizuoka City Shizuoka 424-0103, Japan

TEL +81-54-364-5105  FAX +81-54-364-2589

website: www.iai-robot.co.jp/

Ober der Röth 4, D-65824 Schwalbach am Taunus, Germany

TEL 06196-88950  FAX 06196-889524

SHANGHAI JIAHUA BUSINESS CENTER A8-303, 808, Hongqiao Rd. Shanghai 200030, China

TEL 021-6448-4753  FAX 021-6448-3992

website: www.iai-robot.com

Technical Support available in USA, Europe and China

Head Office: 2690 W. 237th Street, Torrance, CA 90505

TEL (310) 891-6015  FAX (310) 891-0815

Chicago Office: 110 East State Parkway, Schaumburg, IL 60173

TEL(847) 908-1400  FAX (847) 908-1399

TEL (678) 354-9470  FAX (678) 354-9471

website: www.intelligentactuator.com

Atlanta Office: 1220 Kennestone Circle, Suite 108, Marietta, GA 30066

825 PhairojKijja Tower 12th Floor, Bangna-Trad RD., Bangna, Bangna, Bangkok 10260, Thailand

TEL +66-2-361-4458  FAX +66-2-361-4456

 

 

   

Note: 

  When the cable is connected or disconnected, make sure to turn off the power to the controller. 

When the cable is connected or disconnected with the controller power turned ON, it might cause a 
malfunction of the actuator and result in a serious injury or damage to the machinery. 

  When the connector connection is not correct, it would be dangerous because of a malfunction of 

the actuator. Make sure to confirm that the connector is connected correctly.

 

Steel Strap
(Piano Wire)

Tie them up softly.

Do not use spiral tube in any 
position where cables are bent 
frequently.

Power Line

Duct

I/O Line
(Flat Cable, etc.)

Manual No.: ME3743-3A

Datum Face

 

Datum Face

 

Tip Tool

(Loadcell Unit when 

model code LCT)

Rod Side

Motor Side

Right Side

Connector

Rod

Aluminum Frame

Motor Cover

Base

Left Side

Pulley Cover

*Regenerative resistor units could be 

necessary to be connected. 
Refer to the Instruction Manual. 

/CGB

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