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Technical Specifications
Last Updated: 2026-10-10
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | M5251H |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
51.39 oz-in
3.70 kg-cm
0.4 N-m
7.4V
45.84 oz-in
3.30 kg-cm
0.3 N-m
6.0V
36.11 oz-in
2.60 kg-cm
0.3 N-m
|
| Speed |
8.4V
0.03 sec/60°
2,000.0 deg/s
333.3 RPM
7.4V
0.04 sec/60°
1,500.0 deg/s
250.0 RPM
6.0V
0.05 sec/60°
1,200.0 deg/s
200.0 RPM
|
| Stall Current | 1.7–2000 A1700–2000000 mABottom 10% |
| Physical | |
| Weight | 0.81 oz23.0 gBottom 10% |
| Dimensions |
L 0.906 in W 0.472 in H 1.142 in L 23.0 mm W 12.0 mm H 29.0 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Metal |
| Gear Spline/Teeth | 25 T |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 180° |
| Mechanical Limit | 180° |
| Neutral Position | 760 µs |
| Refresh Rate | 700 Hz |
| Angle Sensor | Magnetic Encoder |
| Control System | FBUS/SBUS/PWM |
| Programmable | Yes |
| Electrical & Environment | |
| Operating Voltage | 4.8–8.4 V |
| Connectivity | |
| Connector | JR (Universal) |
| Origin | |
| Country of Origin | China |
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
| Weight | Bottom 10% Lighter than 1% of 620 Digital Micro servos |
| Stall Current | Bottom 10% Lower draw than 1% of 194 Digital Micro servos |
Performance Analysis
| Shaft Power | 1.34–3.17 W |
| Power Density | 6.486 W/in³ More power-dense than 87% of 590 Digital Micro servos |
| Torque Density | 1.5700 oz-in/g |
| Torque-to-Volume Ratio | 73.94 oz-in/in³ |
| Speed-to-Weight | 0.86957 (1/sec·g) |
| Speed-Torque Trade-off | 1.81 |
| Current-per-Torque Ratio | 55.3863 A/oz-in |
| Voltage Range Width | 3.6 V Wider voltage range than 86% of 511 Digital Micro servos |
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