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Technical Specifications
Last Updated: 2026-10-09
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | HD-1440A |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
6.0V
11.11 oz-in
0.80 kg-cm
0.1 N-m
4.8V
8.33 oz-in
0.60 kg-cm
0.1 N-m
Below Average
|
| 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
Average
|
| Running Current |
6.0V
0.110 A
110 mA
4.8V
0.100 A
100 mA
Top 10%
|
| Stall Current | 0.27–0.32 A270–320 mATop 10% |
| Physical | |
| Weight | 0.16 oz4.4 gAbove Average |
| Dimensions |
L 0.79 in W 0.80 in H 0.33 in L 20.1 mm W 20.3 mm H 8.4 mm |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Plastic |
| Gear Spline/Teeth | 20 T estimate |
| Rotation/Support | Bushing |
| Control & Signal | |
| Modulation | Analog |
| Rotational Range | 165° |
| Pulse Cycle | 20 ms |
| Pulse Width | 800-2200 µs |
| Neutral Position | 1520 µs |
| Refresh Rate | 50 Hz |
| Electrical & Environment | |
| Operating Voltage | 4.8–6 V |
| Temperature | -10–50 °C14–122 °F |
| Idle Current | 0.005 A5 mA |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Wire Length | 100 mm3.94 in |
| 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
| Torque | Below Average Stronger than 12% of 170 Analog Micro servos at 4.8V |
| Speed | Average Faster than 63% of 170 Analog Micro servos at 4.8V |
| Weight | Above Average Lighter than 84% of 346 Analog Micro servos |
| Running Current | Top 10% Lower draw than 91% of 33 Analog Micro servos at 4.8V |
| Stall Current | Top 10% Lower draw than 94% of 54 Analog Micro servos |
Performance Analysis
| Shaft Power | 0.13–0.21 W |
| Power Density | 0.985 W/in³ More power-dense than 63% of 333 Analog Micro servos |
| Torque Density | 1.8932 oz-in/g Stronger than 36% of 170 Analog Micro servos |
| Torque-to-Volume Ratio | 39.94 oz-in/in³ Denser torque than 30% of 170 Analog Micro servos |
| Speed-to-Weight | 1.89394 (1/sec·g) Faster than 85% of 170 Analog Micro servos |
| Speed-Torque Trade-off | 1.00 Better balanced than 13% of 169 Analog Micro servos |
| Current-per-Torque Ratio | 0.0384 A/oz-in More efficient than 57% of 45 Analog Micro servos |
| Idle-to-Running Current Ratio | 0.050 Lower idle draw than 50% of 23 Analog Micro servos |
| No-Load vs Stall Current Spread | 3.20 5th-highest no-load vs stall current spread of 25 Analog Micro servos |
| Torque Gain per Volt | 27.81%/V More voltage-responsive (torque) than 94% of 96 Analog Micro servos |
| Speed Gain per Volt | 16.67%/V More voltage-responsive (speed) than 63% of 96 Analog Micro servos |
| Voltage Range Width | 1.2 V Wider voltage range than 70% of 182 Analog Micro servos |
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