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Technical Specifications
Last Updated: 2026-10-24
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | OMG-ST-20DM/PRO |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
333.00 oz-in
23.98 kg-cm
2.4 N-m
7.4V
306.00 oz-in
22.03 kg-cm
2.2 N-m
Above Average
|
| Speed |
8.4V
0.15 sec/60°
400.0 deg/s
66.7 RPM
7.4V
0.16 sec/60°
375.0 deg/s
62.5 RPM
Below Average
|
| Physical | |
| Weight | 2.29 oz65.0 gAverage |
| Dimensions |
L 1.61 in W 0.79 in H 1.57 in L 40.9 mm W 20.1 mm H 39.9 mm |
| Case Material | Metal / Plastic |
| Drivetrain | |
| Motor Type | Brushed |
| Gears | Copper |
| Gear Spline/Teeth | 25 T |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 180° |
| Mechanical Limit | 180° |
| Pulse Width | 500-2500 µs |
| Neutral Position | 1520 µs |
| Dead Band | 2 µs |
| Refresh Rate | 333 Hz |
| Programmable | No |
| Electrical & Environment | |
| Operating Voltage | 7.4–8.4 V |
| Temperature | -15–70 °C5–158 °F |
| Water Rating | Water Resistant |
| Connectivity | |
| Wire Length | 300 mm11.81 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 | Above Average Stronger than 70% of 1060 Digital Standard servos at 7.4V |
| Speed | Below Average Faster than 30% of 1045 Digital Standard servos at 7.4V |
| Weight | Average Lighter than 43% of 1880 Digital Standard servos |
Performance Analysis
| Shaft Power | 3.54–4.10 W |
| Power Density | 2.056 W/in³ More power-dense than 45% of 1768 Digital Standard servos |
| Torque Density | 4.7077 oz-in/g Stronger than 74% of 1053 Digital Standard servos |
| Torque-to-Volume Ratio | 153.24 oz-in/in³ Denser torque than 66% of 1058 Digital Standard servos |
| Speed-to-Weight | 0.09615 (1/sec·g) Faster than 32% of 1038 Digital Standard servos |
| Speed-Torque Trade-off | 48.96 Better balanced than 75% of 1034 Digital Standard servos |
| Torque Gain per Volt | 8.82%/V More voltage-responsive (torque) than 14% of 873 Digital Standard servos |
| Speed Gain per Volt | 6.67%/V More voltage-responsive (speed) than 4% of 874 Digital Standard servos |
| Voltage Range Width | 1.0 V Wider voltage range than 2% of 1560 Digital Standard servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0010 Finer dead band than 67% of 504 Digital Standard servos |
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Reviews (7)
Includes 7 reviews aggregated from around the web.
There are very few reviews for this servo on the web. A Reddit user says he uses it in his Traxxas cars and calls it way better than stock.
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