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Technical Specifications
Last Updated: 2026-07-28
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Identity
Performance
Physical
Drivetrain
Control & Signal
Electrical & Environment
Connectivity
Origin
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Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | HD-1440A |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
6.0V
8.30 oz-in
0.60 kg-cm
0.1 N-m
4.8V
11.10 oz-in
0.80 kg-cm
0.1 N-m
|
| Speed |
6.0V
0.10 sec/60°
600.0 deg/s
100.0 RPM
4.8V
0.12 sec/60°
500.0 deg/s
83.3 RPM
|
| Running Current | (add) |
| Stall Current | (add) |
| Physical | |
| Weight | 0.16 oz4.4 g |
| Dimensions |
L 0.79 in W 0.31 in H 0.77 in L 20.1 mm W 7.9 mm H 19.6 mm |
| Case Material | (add) |
| Drivetrain | |
| Motor Type | (add) |
| Motor Drive | (add) |
| Gears | Plastic |
| Gear Spline/Teeth | 25 T estimate |
| Shaft Size | (add) |
| Rotation Mode | (add) |
| Rotation/Support | Bushing |
| Backlash | (add) |
| Control & Signal | |
| Modulation | Analog |
| Direction | (add) |
| Rotational Range | (add) |
| Mechanical Limit | (add) |
| Pulse Cycle | (add) |
| Pulse Width | (add) |
| Neutral Position | 1520 µs |
| Dead Band | (add) |
| Refresh Rate | 50 Hz |
| Angle Sensor | (add) |
| Control System | (add) |
| Programmable | (add) |
| Signal Voltage | (add) |
| Electrical & Environment | |
| Operating Voltage | 4.8–6 V |
| Power Source | (add) |
| Regulator Type | (add) |
| Temperature | -10–60 °C14–140 °F |
| Water Rating | (add) |
| Certification | (add) |
| Idle Current | (add) |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Wire Length | (add) |
| Origin | |
| Country of Origin | Hong Kong |
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.
Performance Analysis
| Shaft Power | 0.15–0.17 W |
| Torque Density | 2.5227 oz-in/g Stronger than 82% of the 131 Analog Micro servos in the database |
| Torque-to-Volume Ratio | 58.86 oz-in/in³ Denser torque than 75% of the 131 Analog Micro servos in the database |
| Power Density | 0.907 W/in³ More power-dense than 58% of the 319 Analog Micro servos in the database |
| Speed-to-Weight | 1.89394 (1/sec·g) Faster than 84% of the 130 Analog Micro servos in the database |
| Speed-Torque Trade-off | 1.33 Better balanced than 22% of the 130 Analog Micro servos in the database |
| Torque Gain per Volt | -21.02%/V More voltage-responsive (torque) than 1% of the 72 Analog Micro servos in the database |
| Speed Gain per Volt | 16.67%/V More voltage-responsive (speed) than 70% of the 71 Analog Micro servos in the database |
| Voltage Range Width | 1.2 V Wider voltage range than 79% of the 137 Analog Micro servos in the database |
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