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Technical Specifications
Last Updated: 2026-10-27
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | KST-1204 |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
90.22 oz-in
6.50 kg-cm
0.6 N-m
7.4V
76.34 oz-in
5.50 kg-cm
0.5 N-m
6.0V
58.30 oz-in
4.20 kg-cm
0.4 N-m
Bottom 10%
|
| Speed |
8.4V
0.04 sec/60°
1,714.3 deg/s
285.7 RPM
7.4V
0.04 sec/60°
1,500.0 deg/s
250.0 RPM
6.0V
0.05 sec/60°
1,200.0 deg/s
200.0 RPM
Top 10%
|
| Physical | |
| Weight | 1.34 oz38.0 gTop 10% |
| Dimensions |
L 1.398 in W 0.591 in H 1.28 in L 35.5 mm W 15.0 mm H 32.5 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Steel |
| Gear Spline/Teeth | 25 T |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Pulse Cycle | 1.7857 ms |
| Pulse Width | 450-1050 µs |
| Neutral Position | 760 µs |
| Refresh Rate | 560 Hz |
| Angle Sensor | Hall Effect |
| Control System | PWM |
| Programmable | Yes |
| Signal Voltage | 3.3–5V |
| Electrical & Environment | |
| Operating Voltage | 6–8.4 V |
| Temperature | -10–65 °C14–149 °F |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Wire Length | 160 mm6.3 in |
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.
Class Comparison
| Torque | Bottom 10% Stronger than 6% of 1055 Digital Standard servos at 6.0V |
| Speed | Top 10% Faster than 97% of 1038 Digital Standard servos at 6.0V |
| Weight | Top 10% Lighter than 96% of 1872 Digital Standard servos |
Performance Analysis
| Shaft Power | 2.16–4.77 W |
| Power Density | 4.513 W/in³ More power-dense than 76% of 1762 Digital Standard servos |
| Torque Density | 1.5342 oz-in/g Stronger than 11% of 1048 Digital Standard servos |
| Torque-to-Volume Ratio | 55.20 oz-in/in³ Denser torque than 17% of 1053 Digital Standard servos |
| Speed-to-Weight | 0.52632 (1/sec·g) Faster than 99% of 1031 Digital Standard servos |
| Speed-Torque Trade-off | 2.92 Better balanced than 2% of 1029 Digital Standard servos |
| Torque Gain per Volt | 22.81%/V More voltage-responsive (torque) than 89% of 868 Digital Standard servos |
| Speed Gain per Volt | 17.86%/V More voltage-responsive (speed) than 67% of 868 Digital Standard servos |
| Voltage Range Width | 2.4 V Wider voltage range than 57% of 1552 Digital Standard servos |
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Reviews (2)
Includes 2 reviews aggregated from around the web.
There are very few reviews for this servo on the web. A German forum member says that of two KST MS320 and two MS565 servos he received, at least two were defective.
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