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Technical Specifications
Last Updated: 2026-09-14Identity
Performance
Physical
Drivetrain
Control & Signal
Electrical & Environment
Connectivity
Origin
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| Identity | |
| Brand |  |
| Product Number | HSD41002 |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
6.0V
30.60 oz-in
2.20 kg-cm
0.2 N-m
4.8V
25.00 oz-in
1.80 kg-cm
0.2 N-m
|
| Speed |
6.0V
0.09 sec/60°
666.7 deg/s
111.1 RPM
4.8V
0.13 sec/60°
461.5 deg/s
76.9 RPM
|
| Running Current | (add) |
| Stall Current | (add) |
| Physical | |
| Weight | 0.47 oz13.3 g |
| Dimensions |
L 0.93 in W 0.49 in H 1.04 in L 23.6 mm W 12.4 mm H 26.4 mm |
| Case Material | Plastic |
| Drivetrain | |
| Motor Type | (add) |
| Motor Drive | (add) |
| Gears | Metal |
| Gear Spline/Teeth | (add) |
| Shaft Size | (add) |
| Rotation Mode | (add) |
| Rotation/Support | Single Bearing |
| Backlash | (add) |
| Control & Signal | |
| Modulation | Digital |
| Direction | (add) |
| Rotational Range | (add) |
| Mechanical Limit | (add) |
| Pulse Cycle | (add) |
| Pulse Width | (add) |
| Neutral Position | (add) |
| Dead Band | (add) |
| Refresh Rate | (add) |
| Angle Sensor | (add) |
| Control System | PWM |
| Programmable | (add) |
| Signal Voltage | (add) |
| Electrical & Environment | |
| Operating Voltage | 4.8–6 V |
| Power Source | (add) |
| Regulator Type | (add) |
| Temperature | -20–60 °C-4–140 °F |
| Water Rating | (add) |
| Certification | (add) |
| Idle Current | (add) |
| Connectivity | |
| Connector | (add) |
| Wire Length | (add) |
| Origin | |
| Country of Origin | (add) |
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 | 0.36–0.63 W |
| Torque Density | 1.8797 oz-in/g Stronger than 32% of the 237 Digital Micro servos in the database |
| Torque-to-Volume Ratio | 52.75 oz-in/in³ Denser torque than 24% of the 239 Digital Micro servos in the database |
| Power Density | 1.327 W/in³ More power-dense than 32% of the 543 Digital Micro servos in the database |
| Speed-to-Weight | 0.57837 (1/sec·g) Faster than 29% of the 237 Digital Micro servos in the database |
| Speed-Torque Trade-off | 3.25 Better balanced than 55% of the 239 Digital Micro servos in the database |
| Torque Gain per Volt | 18.67%/V More voltage-responsive (torque) than 66% of the 191 Digital Micro servos in the database |
| Speed Gain per Volt | 37.05%/V 3rd-highest speed gain per volt of 193 Digital Micro servos |
| Voltage Range Width | 1.2 V Wider voltage range than 42% of the 405 Digital Micro servos in the database |
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Reviews (6)
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Mies
February 15, 2015Application(s): Used them for my 450 Pro. Heli lost for a week under water 2 years ago. Now there being fit in an aeroplane to control the ailerons and doing just fine!
Comments: Excellent servo i should say.
gak
October 26, 2013Application(s): Blade 450X heli
Comments: Others have mentioned reliability problems, but my set must be extra lucky. I got these servos used in unknown condition over almost 2 years ago, I've put about 180 flights on them, they have survived 4 severe crashes and 5 or 6 minor blade strikes. Through the 4 major crashes, I've broken plastic swashplates, an arm off an Al swash, bent control rods, broken servo horns, yet somehow these little servos keep on not-ticking!
Demetrius
October 29, 2012Application(s): Cyclic servos
Comments: So far running stock equipment,servos and esc,without a single problem thus far. I'm only a sport flier,no hard 3D yet.
chua
July 21, 2012Application(s): align 450FBL Pro 3gx.
Comments: the original that come with align 450FBL pro all dead after heli crash and all 3 servo dont move. replace back ds410m original in a seal box and one out of 3 servo die.
Dies easily
July 11, 2011Application(s): Cyclic on TREX 450 Sport
Comments: The servo flies OK, but is not at all reliable. 6 of them died on me. Some died on the ground, some in a hover. It was always the same position cyclic servo that died. One got very glitchy, the rest just stopped responding completely. I replaced them with HiTech servos and so far these have held up much better. Align replaced 2 of them under warranty, but the last one quit while I was in the air and the heli nearly hit me on its way to the ground where it crashed. I will not buy Align brand servos any more.
bruce
July 5, 2010Application(s): Helicopter (T-Rex 450)
Comments: Good performance but poor reliability.