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Technical Specifications
Last Updated: 2026-10-22
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | MKS-HBL388 |
| Category | Hobby |
| Performance | |
| Torque |
8.2V
944.30 oz-in
68.00 kg-cm
6.7 N-m
7.4V
833.20 oz-in
60.00 kg-cm
5.9 N-m
6.0V
694.30 oz-in
50.00 kg-cm
4.9 N-m
Top 10%
|
| Speed |
8.2V
0.14 sec/60°
428.6 deg/s
71.4 RPM
7.4V
0.16 sec/60°
375.0 deg/s
62.5 RPM
6.0V
0.19 sec/60°
315.8 deg/s
52.6 RPM
Below Average
|
| Physical | |
| Weight | 3.29 oz93.3 gBottom 10% |
| Dimensions |
L 1.693 in W 0.866 in H 1.561 in L 43.0 mm W 22.0 mm H 39.6 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Brushless |
| Gears | Titanium |
| Gear Spline/Teeth | 25 T |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 120° |
| Pulse Cycle | 3.003 ms |
| Neutral Position | 1520 µs |
| Dead Band | 0.8 µs |
| Refresh Rate | 333 Hz |
| Control System | PWM |
| Programmable | Yes |
| Electrical & Environment | |
| Operating Voltage | 6–8.4 V |
| Temperature | -10–60 °C14–140 °F |
| Water Rating | Waterproof |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Wire Length | 290 mm11.42 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 | Top 10% Stronger than 98% of 1060 Digital Standard servos at 6.0V |
| Speed | Below Average Faster than 13% of 1045 Digital Standard servos at 6.0V |
| Weight | Bottom 10% Lighter than 1% of 1880 Digital Standard servos |
Performance Analysis
| Shaft Power | 6.76–12.47 W |
| Power Density | 5.449 W/in³ More power-dense than 82% of 1768 Digital Standard servos |
| Torque Density | 7.4416 oz-in/g Stronger than 95% of 1053 Digital Standard servos |
| Torque-to-Volume Ratio | 303.35 oz-in/in³ Denser torque than 96% of 1058 Digital Standard servos |
| Speed-to-Weight | 0.05641 (1/sec·g) Faster than 1% of 1038 Digital Standard servos |
| Speed-Torque Trade-off | 131.91 3rd-highest speed-torque trade-off of 1034 Digital Standard servos |
| Voltage Range Width | 2.4 V Wider voltage range than 59% of 1560 Digital Standard servos |
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