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Technical Specifications
Last Updated: 2026-10-22| Identity | |
| Brand |  |
| Product Number | KST-0053 |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
24.98 oz-in
1.80 kg-cm
0.2 N-m
6.0V
20.82 oz-in
1.50 kg-cm
0.1 N-m
3.8V
11.10 oz-in
0.80 kg-cm
0.1 N-m
Bottom 10%
|
| Speed |
8.4V
0.07 sec/60°
857.1 deg/s
142.9 RPM
6.0V
0.08 sec/60°
750.0 deg/s
125.0 RPM
3.8V
0.12 sec/60°
500.0 deg/s
83.3 RPM
Average
|
| Stall Current | ≤0.58 A≤580 mAAbove Average |
| Physical | |
| Weight | 0.21 oz6.0 gTop 10% |
| Dimensions |
L 0.787 in W 0.276 in H 0.654 in L 20.0 mm W 7.0 mm H 16.6 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Steel |
| Gear Spline/Teeth | 15 T |
| Rotation Mode | Positional |
| Rotation/Support | Single Bearing |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 120° |
| Pulse Cycle | 3.003 ms |
| Pulse Width | 1000-2000 µs |
| Neutral Position | 1500 µs |
| Dead Band | 2 µs |
| Refresh Rate | 333 Hz |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Programmable | Yes |
| Signal Voltage | 3.3–5V |
| Electrical & Environment | |
| Operating Voltage | 3.8–8.4 V |
| Temperature | -20–65 °C-4–149 °F |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Wire Length | 150 mm5.91 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 5% of 349 Digital Micro servos at 3.8V |
| Speed | Average Faster than 43% of 347 Digital Micro servos at 3.8V |
| Weight | Top 10% Lighter than 91% of 597 Digital Micro servos |
| Stall Current | Above Average Lower draw than 82% of 188 Digital Micro servos |
Performance Analysis
| Shaft Power | 0.17–0.66 W |
| Power Density | 4.653 W/in³ More power-dense than 78% of 563 Digital Micro servos |
| Torque Density | 1.8500 oz-in/g Stronger than 21% of 349 Digital Micro servos |
| Torque-to-Volume Ratio | 78.27 oz-in/in³ Denser torque than 56% of 345 Digital Micro servos |
| Speed-to-Weight | 1.38889 (1/sec·g) Faster than 87% of 347 Digital Micro servos |
| Speed-Torque Trade-off | 1.33 Better balanced than 12% of 345 Digital Micro servos |
| Current-per-Torque Ratio | 0.0523 A/oz-in More efficient than 25% of 98 Digital Micro servos |
| Torque Gain per Volt | 27.18%/V More voltage-responsive (torque) than 90% of 290 Digital Micro servos |
| Speed Gain per Volt | 15.53%/V More voltage-responsive (speed) than 35% of 295 Digital Micro servos |
| Voltage Range Width | 4.6 V Wider voltage range than 94% of 496 Digital Micro servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0020 Finer dead band than 29% of 182 Digital Micro servos |
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Reviews (15)
Includes 15 reviews aggregated from around the web.
Owners are very pleased with this tiny, light servo, and it is a go-to choice for hand-launch gliders, small slope gliders and other thin-winged models where space and weight are tight. Pilots report running four of them off a single 1S battery for about two hours of flying, praise its speed, torque and accuracy for the weight, and one replaced older servos that were jittering with a particular receiver and was happy with the result. It is priced higher than budget micro servos, at around 40 dollars each. The main problem reported was one builder whose four new servos twitched constantly when paired with a certain telemetry-enabled receiver, which other servos did not do and which owners put down to receiver interference rather than a fault in the servo. Overall a well-regarded, reliable micro servo for light models.
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