This is a cache of https://www.futaba.co.jp/en/product/industrial_servo/command_type_servos/rs303mr. It is a snapshot of the page at 2026-06-27T01:01:44.634+0900.
RS303MR | Futaba Corporation

RS303MR

Part Number / Product Name / List Price

<00400109-3 ROBOT SERVO RS303MRFF>

 Specifications

<00400109-3 ROBOT SERVO RS303MRFF>

  • Torque:           6.5 [kgf·cm]
  • Speed:            0.11 [s/60°]
  • Weight:           28 [g]
  •  Dimensions:       35.8 × 19.5 × 25.0 mm
    • Operating Voltage: 4.8 to 7.4 [V]
  • Operating Range:  300 [deg]
  •  Communication:    TTL half-duplex communication / PWM

For dimensions and mounting hole locations, please refer to the user manual.

icon_pdf.gifRS303MR / RS304MD User Manual (ver. 1.19) (4.44 MB)
Outline Dat

Coreless Motor & Metal Gear Type / TTL Command Type

The TTL command-controlled servo offers the same outline and output as the RS301CR and also supports PWM control like an R/C servo.
Because it can also be controlled using the conventional PWM signal for R/C servos, it can be operated with R/C receivers and control boards for PWM servos made by other manufacturers.
It also supports command-controlled operation and can be controlled via both serial communication using TTL-level signals and PWM signals.
After power-on, the control mode automatically switches according to the format of the signal received first. No setting changes are required to match the connected device
Compared with rs485 command-controlled servos, it has lower noise immunity, and the maximum number of servos that can be connected in command-control mode is limited to 26. However, it also includes features such as “Warm Up Time,” which prevents sudden movement at startup in PWM mode.

Options

Replacement cases for the RS3xx series, gear sets for the RS301CR and RS303MR, and servo horns for the RS3xx series are available.

  • Case Set for RS3xx Series
  • Gear Set for RS301CR / RS303MR
  • Servo Horn for RS3xx Series
  • Futaba servo horns for R/C servos (Types A to K) and servo horns for the RS3xx series can also be attached.