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Technical Specifications
Last Updated: 2026-10-09
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | MS18 |
| Category | Hobby |
| Performance | |
| Torque |
6.0V
26.39 oz-in
1.90 kg-cm
0.2 N-m
4.8V
19.44 oz-in
1.40 kg-cm
0.1 N-m
Average
|
| Speed |
6.0V
0.08 sec/60°
750.0 deg/s
125.0 RPM
4.8V
0.09 sec/60°
666.7 deg/s
111.1 RPM
Top 10%
|
| Running Current |
6.0V
0.500 A
500 mA
4.8V
0.400 A
400 mA
Bottom 10%
|
| Stall Current | 1.3–1.6 A1300–1600 mABottom 10% |
| Physical | |
| Weight | 0.32 oz9.0 gAverage |
| Dimensions |
L 0.87 in W 0.46 in H 1.181 in L 22.1 mm W 11.7 mm H 30.0 mm |
| Case Material | Plastic |
| Drivetrain | |
| Motor Type | Brushed |
| Gears | Metal |
| Gear Spline/Teeth | 21 T |
| Rotation Mode | Positional |
| Rotation/Support | Bushing |
| Control & Signal | |
| Modulation | Analog |
| Rotational Range | 180° |
| Mechanical Limit | 200° |
| Pulse Cycle | 20 ms |
| Pulse Width | 500-2500 µs |
| Neutral Position | 1500 µs |
| Dead Band | 8 µs |
| Control System | PWM |
| Programmable | No |
| Electrical & Environment | |
| Operating Voltage | 4.8–6 V |
| Temperature | -25–70 °C-13–158 °F |
| Connectivity | |
| Connector | JR (Universal) |
| Wire Length | 250 mm9.84 in |
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 | Average Stronger than 51% of 159 Analog Micro servos at 4.8V |
| Speed | Top 10% Faster than 94% of 159 Analog Micro servos at 4.8V |
| Weight | Average Lighter than 40% of 336 Analog Micro servos |
| Running Current | Bottom 10% Lower draw than 7% of 31 Analog Micro servos at 4.8V |
| Stall Current | Bottom 10% Lower draw than 2% of 48 Analog Micro servos |
Performance Analysis
| Torque Density | 2.1600 oz-in/g Stronger than 54% of 159 Analog Micro servos |
| Torque-to-Volume Ratio | 41.13 oz-in/in³ Denser torque than 29% of 159 Analog Micro servos |
| Speed-to-Weight | 1.23457 (1/sec·g) Faster than 73% of 159 Analog Micro servos |
| Speed-Torque Trade-off | 1.75 Better balanced than 25% of 158 Analog Micro servos |
| Current-per-Torque Ratio | 0.0823 A/oz-in More efficient than 3% of 38 Analog Micro servos |
| No-Load vs Stall Current Spread | 4.00 Narrower current spread than 50% of 23 Analog Micro servos |
| Torque Gain per Volt | 29.79%/V More voltage-responsive (torque) than 95% of 101 Analog Micro servos |
| Speed Gain per Volt | 10.41%/V More voltage-responsive (speed) than 17% of 101 Analog Micro servos |
| Voltage Range Width | 1.2 V Wider voltage range than 10% of 174 Analog Micro servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0040 Finer dead band than 56% of 42 Analog Micro servos |
Notes
Generic SG90
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Reviews (1)
Includes 1 review aggregated from around the web.
There are very few reviews for this servo on the web. A Japanese blogger bought ten and found all ten worked normally with no unusual noise and consistent characteristics. Each unit was very light, and one was slightly off in horn angle.
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