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Technical Specifications
Last Updated: 2026-10-10
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | KST-MS589 |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
127.70 oz-in
9.20 kg-cm
0.9 N-m
7.4V
111.04 oz-in
8.00 kg-cm
0.8 N-m
6.0V
90.22 oz-in
6.50 kg-cm
0.6 N-m
Below Average
|
| Speed |
8.4V
0.08 sec/60°
750.0 deg/s
125.0 RPM
7.4V
0.09 sec/60°
666.7 deg/s
111.1 RPM
6.0V
0.10 sec/60°
600.0 deg/s
100.0 RPM
Above Average
|
| 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 estimate |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 200° |
| Pulse Cycle | 3 ms |
| Pulse Width | 1000-2200 µs |
| Neutral Position | 1520 µs |
| Dead Band | 2 µs |
| Angle Sensor | Hall Effect |
| Control System | PWM |
| Programmable | No |
| Electrical & Environment | |
| Operating Voltage | 6–8.4 V |
| Temperature | -20–60 °C-4–140 °F |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Wire Length | 210 mm8.27 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 | Below Average Stronger than 15% of 1043 Digital Standard servos at 6.0V |
| Speed | Above Average Faster than 76% of 1041 Digital Standard servos at 6.0V |
| Weight | Top 10% Lighter than 96% of 1902 Digital Standard servos |
Performance Analysis
| Shaft Power | 1.67–2.95 W |
| Power Density | 2.795 W/in³ More power-dense than 56% of 1759 Digital Standard servos |
| Torque Density | 2.3742 oz-in/g Stronger than 29% of 1036 Digital Standard servos |
| Torque-to-Volume Ratio | 85.43 oz-in/in³ Denser torque than 34% of 1042 Digital Standard servos |
| Speed-to-Weight | 0.26316 (1/sec·g) Faster than 92% of 1033 Digital Standard servos |
| Speed-Torque Trade-off | 9.02 Better balanced than 12% of 1031 Digital Standard servos |
| Torque Gain per Volt | 17.31%/V More voltage-responsive (torque) than 65% of 850 Digital Standard servos |
| Speed Gain per Volt | 10.42%/V More voltage-responsive (speed) than 20% of 871 Digital Standard servos |
| Voltage Range Width | 2.4 V Wider voltage range than 58% of 1539 Digital Standard servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0017 Finer dead band than 43% of 468 Digital Standard servos |
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