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Technical Specifications
Last Updated: 2026-10-24
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | OMG-ST-55BF |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
784.64 oz-in
56.50 kg-cm
5.5 N-m
7.4V
722.14 oz-in
52.00 kg-cm
5.1 N-m
6.0V
624.93 oz-in
45.00 kg-cm
4.4 N-m
Top 10%
|
| Speed |
8.4V
0.10 sec/60°
631.6 deg/s
105.3 RPM
7.4V
0.11 sec/60°
571.4 deg/s
95.2 RPM
6.0V
0.13 sec/60°
480.0 deg/s
80.0 RPM
Average
|
| Physical | |
| Weight | 3.10 oz88.0 gBottom 10% |
| Dimensions |
L 1.57 in W 0.79 in H 1.63 in L 39.9 mm W 20.1 mm H 41.4 mm |
| Case Material | Metal |
| Drivetrain | |
| Motor Type | Brushless |
| Gears | Stainless Steel |
| Gear Spline/Teeth | 25 T |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 220° |
| Mechanical Limit | 180° |
| Pulse Width | 500-2500 µs |
| Neutral Position | 1520 µs |
| Dead Band | 2 µs |
| Refresh Rate | 333 Hz |
| Programmable | Yes |
| Electrical & Environment | |
| Operating Voltage | 6–8.4 V |
| Temperature | -15–70 °C5–158 °F |
| Water Rating | IP67 |
| Connectivity | |
| Wire Length | 315 mm12.4 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 | Top 10% Stronger than 97% of 1060 Digital Standard servos at 6.0V |
| Speed | Average Faster than 60% of 1045 Digital Standard servos at 6.0V |
| Weight | Bottom 10% Lighter than 3% of 1880 Digital Standard servos |
Performance Analysis
| Shaft Power | 9.24–15.27 W |
| Power Density | 7.554 W/in³ More power-dense than 93% of 1768 Digital Standard servos |
| Torque Density | 7.1015 oz-in/g Stronger than 94% of 1053 Digital Standard servos |
| Torque-to-Volume Ratio | 309.11 oz-in/in³ Denser torque than 96% of 1058 Digital Standard servos |
| Speed-to-Weight | 0.09091 (1/sec·g) Faster than 26% of 1038 Digital Standard servos |
| Speed-Torque Trade-off | 78.12 Better balanced than 92% of 1034 Digital Standard servos |
| Torque Gain per Volt | 10.65%/V More voltage-responsive (torque) than 21% of 873 Digital Standard servos |
| Speed Gain per Volt | 13.16%/V More voltage-responsive (speed) than 36% of 874 Digital Standard servos |
| Voltage Range Width | 2.4 V Wider voltage range than 47% 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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