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Technical Specifications
Last Updated: 2026-10-10
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | KST-DS1509MG |
| Category | Hobby |
| Performance | |
| Torque |
7.4V
177.67 oz-in
12.79 kg-cm
1.3 N-m
6.0V
148.52 oz-in
10.69 kg-cm
1.0 N-m
4.8V
117.98 oz-in
8.50 kg-cm
0.8 N-m
Below Average
|
| Speed |
7.4V
0.07 sec/60°
857.1 deg/s
142.9 RPM
6.0V
0.08 sec/60°
750.0 deg/s
125.0 RPM
4.8V
0.10 sec/60°
600.0 deg/s
100.0 RPM
Average
|
| Physical | |
| Weight | 1.94 oz55.0 gBelow Average |
| Dimensions |
L 1.595 in W 0.787 in H 1.00 in L 40.5 mm W 20.0 mm H 25.4 mm |
| Case Material | Metal |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Steel |
| Gear Spline/Teeth | 25 T estimate |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 100° |
| Pulse Cycle | 3.003 ms |
| Pulse Width | 900-2100 µs |
| Neutral Position | 1500 µs |
| Refresh Rate | 333 Hz |
| Control System | PWM |
| Programmable | Yes |
| Electrical & Environment | |
| Operating Voltage | 4.8–7.4 V |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Wire Length | 205 mm8.07 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 32% of 136 Digital Low Profile servos at 4.8V |
| Speed | Average Faster than 42% of 135 Digital Low Profile servos at 4.8V |
| Weight | Below Average Lighter than 32% of 251 Digital Low Profile servos |
Performance Analysis
| Shaft Power | 2.18–4.69 W |
| Power Density | 3.738 W/in³ More power-dense than 52% of 215 Digital Low Profile servos |
| Torque Density | 2.1451 oz-in/g Stronger than 21% of 136 Digital Low Profile servos |
| Torque-to-Volume Ratio | 93.97 oz-in/in³ Denser torque than 36% of 136 Digital Low Profile servos |
| Speed-to-Weight | 0.18182 (1/sec·g) Faster than 35% of 135 Digital Low Profile servos |
| Speed-Torque Trade-off | 11.80 Better balanced than 44% of 134 Digital Low Profile servos |
| Torque Gain per Volt | 19.46%/V More voltage-responsive (torque) than 71% of 115 Digital Low Profile servos |
| Speed Gain per Volt | 16.48%/V More voltage-responsive (speed) than 66% of 117 Digital Low Profile servos |
| Voltage Range Width | 2.6 V Wider voltage range than 56% of 223 Digital Low Profile servos |
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