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Technical Specifications
Last Updated: 2026-10-24
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | OMG-R4-25BF |
| Category | Hobby |
| Performance | |
| Torque |
7.4V
331.00 oz-in
23.83 kg-cm
2.3 N-m
6.0V
306.00 oz-in
22.03 kg-cm
2.2 N-m
4.8V
257.00 oz-in
18.51 kg-cm
1.8 N-m
Average
|
| Speed |
7.4V
0.05 sec/60°
1,276.6 deg/s
212.8 RPM
6.0V
0.05 sec/60°
1,200.0 deg/s
200.0 RPM
4.8V
0.07 sec/60°
923.1 deg/s
153.8 RPM
Top 10%
|
| Physical | |
| Weight | 2.61 oz74.0 gBelow Average |
| Dimensions |
L 1.60 in W 0.81 in H 1.39 in L 40.6 mm W 20.6 mm H 35.3 mm |
| Case Material | Aluminum |
| 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 | 180° |
| Mechanical Limit | 180° |
| Pulse Width | 500-2500 µs |
| Neutral Position | 1520 µs |
| Dead Band | 3 µs |
| Refresh Rate | 333 Hz |
| Control System | PWM |
| Programmable | No |
| Signal Voltage | 3-5V |
| Electrical & Environment | |
| Operating Voltage | 4.8–7.4 V |
| Temperature | -15–70 °C5–158 °F |
| Water Rating | IP67 |
| Connectivity | |
| Wire Length | 300 mm11.81 in |
| Origin | |
| Country of Origin | China |
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 60% of 1055 Digital Standard servos at 4.8V |
| Speed | Top 10% Faster than 92% of 1038 Digital Standard servos at 4.8V |
| Weight | Below Average Lighter than 23% of 1872 Digital Standard servos |
Performance Analysis
| Shaft Power | 7.31–13.02 W |
| Power Density | 7.229 W/in³ More power-dense than 92% of 1762 Digital Standard servos |
| Torque Density | 3.4730 oz-in/g Stronger than 51% of 1048 Digital Standard servos |
| Torque-to-Volume Ratio | 142.66 oz-in/in³ Denser torque than 62% of 1053 Digital Standard servos |
| Speed-to-Weight | 0.20790 (1/sec·g) Faster than 88% of 1031 Digital Standard servos |
| Speed-Torque Trade-off | 16.70 Better balanced than 28% of 1029 Digital Standard servos |
| Torque Gain per Volt | 11.07%/V More voltage-responsive (torque) than 23% of 868 Digital Standard servos |
| Speed Gain per Volt | 14.73%/V More voltage-responsive (speed) than 45% of 868 Digital Standard servos |
| Voltage Range Width | 2.6 V Wider voltage range than 64% of 1552 Digital Standard servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0015 Finer dead band than 52% of 501 Digital Standard servos |
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