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Technical Specifications
Last Updated: 2026-07-28Identity
Performance
Physical
Drivetrain
Control & Signal
Electrical & Environment
Connectivity
Origin
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| Identity | |
| Brand |  |
| Product Number | (add) |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
6.0V
181.00 oz-in
13.03 kg-cm
1.3 N-m
4.8V
139.00 oz-in
10.01 kg-cm
1.0 N-m
|
| Speed |
6.0V
0.20 sec/60°
300.0 deg/s
50.0 RPM
4.8V
0.25 sec/60°
240.0 deg/s
40.0 RPM
|
| Running Current | (add) |
| Stall Current | (add) |
| Physical | |
| Weight | 6.63 oz188.0 g |
| Dimensions |
L 2.14 in W 1.04 in H 2.03 in L 54.4 mm W 26.4 mm H 51.6 mm |
| Case Material | (add) |
| Drivetrain | |
| Motor Type | (add) |
| Motor Drive | (add) |
| Gears | (add) |
| Gear Spline/Teeth | 25 T estimate |
| Shaft Size | (add) |
| Rotation Mode | (add) |
| Rotation/Support | (add) |
| Backlash | (add) |
| Control & Signal | |
| Modulation | Analog |
| Direction | (add) |
| Rotational Range | (add) |
| Mechanical Limit | (add) |
| Pulse Cycle | (add) |
| Pulse Width | (add) |
| Neutral Position | (add) |
| Dead Band | (add) |
| Refresh Rate | (add) |
| Angle Sensor | (add) |
| Control System | (add) |
| Programmable | (add) |
| Signal Voltage | (add) |
| Electrical & Environment | |
| Operating Voltage | (add) |
| Power Source | (add) |
| Regulator Type | (add) |
| Temperature | (add) |
| Water Rating | (add) |
| Certification | (add) |
| Idle Current | (add) |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Wire Length | (add) |
| Origin | |
| Country of Origin | (add) |
Disclaimer: Most data is sourced from the manufacturer. Some data is sourced from our loyal community and with the help of AI. We aim for accuracy but are not responsible for inaccurate information.
Performance Analysis
| Shaft Power | 1.03–1.67 W |
| Torque Density | 0.7394 oz-in/g |
| Torque-to-Volume Ratio | 30.77 oz-in/in³ |
| Power Density | 0.370 W/in³ More power-dense than 11% of the 89 GWS servos in the database |
| Speed-to-Weight | 0.02128 (1/sec·g) |
| Speed-Torque Trade-off | 34.75 |
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Reviews (1)
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robots42
July 28, 2013Application(s): robot arm
Comments: The old S04 with the thin lead was excellent, then GWS upgraded the S04 with new electronics and a heavier lead. The upgraded version (tested on several servos) managed about 6.7Kgcm in one direction and 7.2Kgcm in the other and the 6.7Kgcm direction was very juddery on load. Maybe by now GWS has corrected their 'improvement'.