6pcs set  No.03138  Open

18pcs set  No.03139  Open


 Max Torque: 67.0kg・cm
 Max Speed: 0.22s/60deg.

 Size: 51.5×32×39.5mm
            (Excluding protrusions)
 Weight: 103g
 Maximum operating angle: 270°(±135°)
 Gear:  Aluminum gear + Stainless
 Case:  Aluminum(Top/Mid case)
               Plastic(Bottom case)
 Gear ratio: 362.88:1
 Power-supply voltage: HV(9-12V)
 Cable: Detachable
 Connector: Servo connector

 Communication standard: ICS3.6 (Serial/PWM)
 Baud rate: 115200/625000/1250000bps
 Initial setting: ID0 / BR115200
 Signal level: TTL
 Rotation mode: Possible

<Supported control board>

 Dual USB Adapter HS
 ICS USB Adapter HS

 HV connection cable (400mm)  1pcs
 Aluminum clamping horn (Installed)  1pcs

   6pcs set

    HV connection cable (400mm)  6pcs
 Aluminum clamping horn (Installed)  6pcs

   18pcs set

    HV connection cable (400mm)  18pcs
 Aluminum clamping horn (Installed)  18pcs



Made in Japan

Product Description

High torque servo motor with max. torque of 67 kg. Aluminum cases used for the top and middle cases to increase rigidity.


[Difference from KRS-6003RHV]

KRS-6003R2HV has changed the software to ICS 3.6. Since ICS 3.6 is upwardly compatible with ICS 3.5, it can be used in the same way. There are no other changes such as case dimensions and specifications.



[Product Specifications]

Gears: Special aluminum gears + stainless steel gear
Comes standard with special aluminum gears that are light and extremely strong. In addition, a stainless steel gear is included as the third gear to further increase the strength. The output shaft is bearing-supported for increased stability. KRS-6003RHV includes high-torque-type gears that output 67 kg/cm, the strongest in the KONDO servo motor lineup.

Case: KRS 6000 Series
The top and middle cases are aluminum to reduce the wobble of the gear shaft and achieve the high rigidity and high strength needed for high output. They also function as heat sinks for heat released by the motor. Replace with the optional bottom case depending on the usage scenario to simplify embedding.


Communication specifications: ICS3.6
ICS3.6 is upward compatible with ICS3.5. A command for acquiring the current position has been added to the 3.5 version content.For the communication format, you can select between serial and PWM, the same as before. Servo motor communication can be changed based on the microcomputer board used for control. Also, in serial mode, IDs can be assigned to the servo motors, so multi-drop communication in which the servo motors are connected is possible.



Use double servo motors to further increase torque
Use the bottom case set for double servo motors and combine the motors back to back to double the torque.You can also use ICS3.0’s “Reverse” and “Slave” functions to simplify control.



[Control method]

Control from the control board "RCB-4HV"

You can easily control the servo by combining RCB-4HV with Motion Creation Software HeartToHeart 4.

RCB-4HV has 2 lines for servo control, 10 ports for analog sensor and 10 ports for digital I/O terminal are prepared.

Using HeartToHeart4, you can create motion and adjust the robot. Motion can be created by arranging controls (panels) with various functions. You can create a simple "greeting" motion, etc. You can also create complex motions such as sensors and wireless controller buttons.

01 05 03

By assigning ID numbers to each servo and making multi-drop connection, devices are connected and communicate.


  Dual USB Adapter HS
  HV Power Switch Cable


Control from PC


By using the Dual USB adapter HS you can control the servo directly from the PC. Please send the command referring to the published "Software manual (command reference)". Communication methods and samples are also published, so please see the following article for details.

 『シリアルサーボ制御方法(4) PCから直接制御編(その1)』

 『シリアルサーボ制御方法(5) PCから直接制御編(その2)』



  Dual USB Adapter HS



Control from Microcomputer board or PC board


ICS devices such as KRS servo can be controlled from the UART terminal of the commercial board. ICS has the Tx (transmit) and Rx (receive) signal lines of the ICS device are integrated, it was necessary to prepare the circuit when connecting to the UART terminal. Circuits necessary for communication are prepared on this conversion board. You can communicate with the ICS device simply by connecting each terminal to the board. Please refer to "Software manual (command reference)" about communication method and command.

 『シリアルサーボ制御方法(2) ICS編』

 『シリアルサーボ制御方法(3) ソフト編』




  ICS conversion board shield
  HV Power Switch Cable

*When using with Arduino UNO
  KSB Shield 2


 We released a library for Arduino. Please download it from the link below.

 『ICS Library for Arduino ver.2』


 For detailed usage of the Arduino library, please see this article.

 『ICS変換基板の使用方法(1) 準備編』

 『ICS変換基板の使用方法(2) サーボ制御編』

 『ICS Library for Arduino のver.1.0とver2.0の違いについて』



Serial Manager

You can set the servo ID and communication speed by using the ICS 3.5 / 3.6 Manager software. Various parameters such as "stretch" and "speed" can be changed.

 ICS3.5/3.6 Manager software R1.1.0.0



[Power supply]

For HV servo, please use 3 cell (9.9 V) Lithium Ferrite battery(Li-Fe).


  ROBO Power Cell F3-850 type (Li-Fe)

  ROBO Power Cell F3-1450 type (Li-Fe)

  ROBO Power Cell F3-2100 type (Li-Fe)

*Handling the battery requires caution.Please read this article before using.




  BX-20LF(only for Li-Fe) 


AC Adapter

For robots with fewer servos mounted like arm type, you can use the following AC adapter. Be careful of the current capacity when using it.

  AC Adapter(12V5A)


Information on KRS servo is prepared collectively in "ICS · KRS Servo Development Material". In addition, we also have various information on robots in "Technical Guide", so please refer to it.