RS204MD
Part Number / Product Name / List Price
<00400108-3 ROBOT SERVO RS204MD FUTABA>
Specifications
- Torque: 2.1 [kgf·cm]
- Speed: 0.19 [s/60°]
- Weight: 12 [g]
- Dimensions: 27.9 × 16.0 × 23.9 mm
- Operating Voltage: 5.0[V] (3.7~6.0 [V])
- Operating Range: 300 [deg]
- Communication: TTL half-duplex communication / PWM.
For dimensions and mounting hole locations, please refer to the user manual.

Compact, lightweight servo with plastic gears
This is the smallest servo in the series, with a 40% reduction in volume compared with the RS304MD, while also allowing daisy-chain connection via ADH connectors. Communication functions support the command-controlled and PWM control methods common to the RS series. This makes it well suited for use in small communication robots and as a compact actuator in IoT applications.
Options
Linkage parts are available for easy mounting to frames and for creating orthogonal two-axis joints.
By attaching a free horn, a dual-shaft support structure can also be achieved.
- Bracket Set for Mounting
BS3468 BRACKET SET RS204MD: Bracket mounting set
6 brackets, 20 tapping screws (1.2 × 5), 20 washers for 1.2 mm screws, and 20 tapping screws (2 × 8)
- Terminal Boxes
BS3476 TERMINAL BOARD TB41AD: ADH terminal relay board for TTL command-controlled servos (4 ports)
BA2082 TB-RV71EH-7.4V/3W: EH terminal box with power switch for TTL command-controlled servos (7 ports)
BC0079 TB-RV71EH POWER CABLE: Cable with power supply connector for TB-RV71EH
BS3308 TB-EH41EH-300: EH terminal box for TTL command-controlled servos (4 ports)
BB0132 TB22PP: Terminal box for servo connectors (4 ports)
- Cables with Connectors
BB1182 SERVO CABLE AD-RC B 150: Servo connector conversion cable, 150 mm
BB1183 SERVO CABLE AD-RC B 300: Servo connector conversion cable, 300 mm
BB1184 SERVO CABLE AD-EH B 150: EH connector conversion cable, 150 mm
BB1185 SERVO CABLE AD-EH B 300: EH connector conversion cable, 300 mm
BB1186 SERVO CABLE AD-AD B 70: Cable for ADH connectors, 70 mm
BB1187 SERVO CABLE AD-AD B 150: Cable for ADH connectors, 150 mm
BB1188 SERVO CABLE AD-AD B 300: Cable for ADH connectors, 300 mm
BB1189 SERVO CABLE AD-C B 300: Cable without connector on one end, 300 mm
- Mounting Screws
BS3471 TAPPING SCREW 1.2X3.5: Tapping screw, nominal diameter 1.2 mm × L3.5 mm (30 pcs.)
BS3472 TAPPING SCREW 1.2X5: Tapping screw, nominal diameter 1.2 mm × L5 mm (30 pcs.)
BS3473 TAPPING SCREW 1.2X6: Tapping screw, nominal diameter 1.2 mm × L6 mm (30 pcs.)
BS3474 TAPPING SCREW 1.2X8: Tapping screw, nominal diameter 1.2 mm × L8 mm (30 pcs.)
BS3475 PLANE WASHER 1.2X2.8: Plain washer for 1.2 mm tapping screws
- Replacement Parts
BS3470 CASE SET RS204MD: Replacement case parts set including upper, middle, and bottom cases
BS3469 GEAR SET RS204MD: Replacement gear parts set including gears, shaft, and bearings
BS3477 GREASE MULTIPURPOSE: Multipurpose grease, 8 g; approximately 0.05 g per unit is suitable for the RS204MD gear box
- Servo Horns
BS0532 RS302_304 SCREW 2x8: Horn fixing screws for RS302CD / RS304MD / RS204MD (10 pcs.)
BS3354 ROBOT SERVO HORN RH01: Common servo horn for RS3xx / RS2xx series (5 pcs.)
BS0168 RS30x FREE HORN SET: Common free horn set for RS3xx / RS2xx series (5 pcs.)
- Servo Horns for RS2xx / RS3xx Series
Futaba servo horns for R/C servos (Types A to K) and servo horns for the RS3xx series can also be attached.
* For details, please refer to the user manual.




