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Technical Specifications
Last Updated: 2026-10-10
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
Above 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 | Metal |
| Drivetrain | |
| Motor Type | Brushless |
| Gears | Stainless steel |
| Gear Spline/Teeth | 25 T |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| 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 |
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 66% of 1294 Standard servos at 4.8V |
| Speed | Top 10% Faster than 93% of 1290 Standard servos at 4.8V |
| Weight | Below Average Lighter than 17% of 2538 Standard servos |
Performance Analysis
| Shaft Power | 7.31–13.02 W |
| Power Density | 7.229 W/in³ More power-dense than 69% of 36 OMG servos |
| Torque Density | 3.4730 oz-in/g Stronger than 25% of 21 OMG servos |
| Torque-to-Volume Ratio | 142.66 oz-in/in³ Denser torque than 35% of 27 OMG servos |
| Speed-to-Weight | 0.20790 (1/sec·g) Faster than 55% of 21 OMG servos |
| Speed-Torque Trade-off | 16.70 Better balanced than 32% of 29 OMG servos |
| Torque Gain per Volt | 11.07%/V More voltage-responsive (torque) than 64% of 29 OMG servos |
| Speed Gain per Volt | 14.73%/V 5th-highest speed gain per volt of 29 OMG servos |
| Voltage Range Width | 2.6 V Wider voltage range than 57% of 38 OMG servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0015 Finer dead band than 55% of 520 Standard servos |
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