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Technical Specifications
Last Updated: 2026-10-24
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | DHV840 |
| Category | Hobby |
| Performance | |
| Torque |
7.4V555.50 oz-in40.00 kg-cm3.9 N-m |
| Speed |
7.4V0.16 sec/60°375.0 deg/s62.5 RPM |
| Stall Current | ≤5 A≤5000 mABelow Average |
| Physical | |
| Weight | 2.66 oz75.5 gBelow Average |
| Dimensions |
L 1.57 in W 0.79 in H 1.69 in L 39.9 mm W 20.1 mm H 42.9 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Titanium |
| Gear Spline/Teeth | 25 T |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 120° |
| Refresh Rate | 330 Hz |
| Angle Sensor | Potentiometer |
| Electrical & Environment | |
| Operating Voltage | 4.8–7.4 V |
| Temperature | -10–50 °C14–122 °F |
| 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 | Below Average Lighter than 20% of 1880 Digital Standard servos |
| Stall Current | Below Average Lower draw than 23% of 570 Digital Standard servos |
Performance Analysis
| Shaft Power | 6.42 W |
| Power Density | 3.063 W/in³ More power-dense than 61% of 1768 Digital Standard servos |
| Torque Density | 7.3576 oz-in/g |
| Torque-to-Volume Ratio | 265.02 oz-in/in³ |
| Speed-to-Weight | 0.08278 (1/sec·g) |
| Speed-Torque Trade-off | 88.88 |
| Current-per-Torque Ratio | 0.0090 A/oz-in |
| Voltage Range Width | 2.6 V Wider voltage range than 65% of 1560 Digital Standard servos |
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