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Technical Specifications
Last Updated: 2026-10-26
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
Above 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 gBelow Average |
| 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 |
| Refresh Rate | 333 Hz |
| Angle Sensor | Hall Effect |
| Control System | PWM |
| Programmable | Yes |
| Electrical & Environment | |
| Operating Voltage | 6–8.4 V |
| Temperature | -10–65 °C14–149 °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 | Above Average Stronger than 78% of 290 Digital Mini servos at 6.0V |
| Speed | Above Average Faster than 66% of 293 Digital Mini servos at 6.0V |
| Weight | Below Average Lighter than 13% of 505 Digital Mini servos |
Performance Analysis
| Shaft Power | 1.67–2.95 W |
| Power Density | 2.795 W/in³ More power-dense than 69% of 482 Digital Mini servos |
| Torque Density | 2.3742 oz-in/g Stronger than 51% of 286 Digital Mini servos |
| Torque-to-Volume Ratio | 85.43 oz-in/in³ Denser torque than 55% of 288 Digital Mini servos |
| Speed-to-Weight | 0.26316 (1/sec·g) Faster than 28% of 289 Digital Mini servos |
| Speed-Torque Trade-off | 9.02 Better balanced than 63% of 288 Digital Mini servos |
| Torque Gain per Volt | 17.31%/V More voltage-responsive (torque) than 56% of 257 Digital Mini servos |
| Speed Gain per Volt | 10.42%/V More voltage-responsive (speed) than 14% of 262 Digital Mini servos |
| Voltage Range Width | 2.4 V Wider voltage range than 54% of 405 Digital Mini servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0017 Finer dead band than 48% of 104 Digital Mini servos |
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