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Technical Specifications
Last Updated: 2026-10-23
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | HD-1800A |
| Category | Hobby |
| Performance | |
| Torque |
6.0V
18.00 oz-in
1.30 kg-cm
0.1 N-m
4.8V
13.80 oz-in
0.99 kg-cm
0.1 N-m
Below Average
|
| Speed |
6.0V
0.08 sec/60°
750.0 deg/s
125.0 RPM
4.8V
0.11 sec/60°
545.5 deg/s
90.9 RPM
Above Average
|
| Running Current |
6.0V
0.140 A
140 mA
4.8V
0.120 A
120 mA
Above Average
|
| Stall Current | 0.39–0.46 A390–460 mAAbove Average |
| Physical | |
| Weight | 0.28 oz8.0 gAverage |
| Dimensions |
L 0.82 in W 0.46 in H 0.945 in L 20.8 mm W 11.7 mm H 24.0 mm |
| Case Material | Plastic |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Plastic |
| Gear Spline/Teeth | 24 T estimate |
| Rotation Mode | Positional |
| Rotation/Support | Bushing |
| Control & Signal | |
| Modulation | Analog |
| Direction | Counterclockwise |
| Rotational Range | 90° |
| Mechanical Limit | 180° |
| Pulse Cycle | 20 ms |
| Pulse Width | 800-2200 µs |
| Neutral Position | 1520 µs |
| Refresh Rate | 50 Hz |
| Control System | PWM |
| Programmable | No |
| Signal Voltage | 3-5V |
| Electrical & Environment | |
| Operating Voltage | 4.8–6 V |
| Temperature | -20–60 °C-4–140 °F |
| Idle Current | 0.005 A5 mA |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Wire Length | 152.4 mm6 in |
| Origin | |
| Country of Origin | Poland |
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 16% of 160 Analog Micro servos at 4.8V |
| Speed | Above Average Faster than 81% of 160 Analog Micro servos at 4.8V |
| Weight | Average Lighter than 63% of 336 Analog Micro servos |
| Running Current | Above Average Lower draw than 77% of 31 Analog Micro servos at 4.8V |
| Stall Current | Above Average Lower draw than 89% of 48 Analog Micro servos |
Performance Analysis
| Shaft Power | 0.23–0.42 W |
| Power Density | 1.167 W/in³ More power-dense than 74% of 322 Analog Micro servos |
| Torque Density | 1.7250 oz-in/g Stronger than 23% of 160 Analog Micro servos |
| Torque-to-Volume Ratio | 38.71 oz-in/in³ Denser torque than 24% of 160 Analog Micro servos |
| Speed-to-Weight | 1.13636 (1/sec·g) Faster than 70% of 160 Analog Micro servos |
| Speed-Torque Trade-off | 1.52 Better balanced than 15% of 159 Analog Micro servos |
| Current-per-Torque Ratio | 0.0333 A/oz-in More efficient than 62% of 38 Analog Micro servos |
| Idle-to-Running Current Ratio | 0.042 Lower idle draw than 65% of 24 Analog Micro servos |
| No-Load vs Stall Current Spread | 3.83 Narrower current spread than 68% of 23 Analog Micro servos |
| Torque Gain per Volt | 25.36%/V More voltage-responsive (torque) than 90% of 101 Analog Micro servos |
| Speed Gain per Volt | 31.24%/V 5th-highest speed gain per volt of 101 Analog Micro servos |
| Voltage Range Width | 1.2 V Wider voltage range than 72% of 174 Analog Micro servos |
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Reviews (5)
Includes 5 reviews aggregated from around the web.
There are few reviews for this servo on the web, and they are star-only. A robotics retailer shows 5.0 out of 5 from 5 reviews, with no written comments found. Separate forum posts are about wiring and power setups with a controller rather than the servo itself.
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