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Technical Specifications
Last Updated: 2026-10-22
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | BMS-125WV+ |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
98.62 oz-in
7.10 kg-cm
0.7 N-m
7.4V
91.67 oz-in
6.60 kg-cm
0.6 N-m
6.0V
76.40 oz-in
5.50 kg-cm
0.5 N-m
3.7V
50.00 oz-in
3.60 kg-cm
0.4 N-m
|
| Speed |
8.4V
0.09 sec/60°
666.7 deg/s
111.1 RPM
7.4V
0.10 sec/60°
600.0 deg/s
100.0 RPM
6.0V
0.13 sec/60°
461.5 deg/s
76.9 RPM
3.7V
0.20 sec/60°
300.0 deg/s
50.0 RPM
|
| Physical | |
| Weight | 0.39 oz11.0 gAverage |
| Dimensions |
L 0.913 in W 0.394 in H 0.906 in L 23.2 mm W 10.0 mm H 23.0 mm |
| Case Material | Nylon |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Metal |
| Gear Spline/Teeth | 25 T |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Direction | Clockwise |
| Rotational Range | 90° |
| Mechanical Limit | 90° |
| Pulse Cycle | 3 ms |
| Pulse Width | 1100-1900 µs |
| Neutral Position | 1500 µs |
| Dead Band | 2 µs |
| Refresh Rate | 333 Hz |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Programmable | No |
| Electrical & Environment | |
| Operating Voltage | 3.6–8.4 V |
| Power Source | 2S Li-Po / 2S Li-Fe |
| Temperature | 0–40 °C32–104 °F |
| Connectivity | |
| Connector | JR (Universal) |
| Wire Length | 150 mm5.91 in |
| Origin | |
| Country of Origin | Taiwan |
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
| Weight | Average Lighter than 48% of 597 Digital Micro servos |
Performance Analysis
| Shaft Power | 0.46–2.03 W |
| Power Density | 6.217 W/in³ More power-dense than 86% of 563 Digital Micro servos |
| Torque Density | 4.5455 oz-in/g |
| Torque-to-Volume Ratio | 153.42 oz-in/in³ |
| Speed-to-Weight | 0.45455 (1/sec·g) |
| Speed-Torque Trade-off | 10.00 |
| Voltage Range Width | 4.8 V Wider voltage range than 97% of 496 Digital Micro servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0025 Finer dead band than 18% of 182 Digital Micro servos |
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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 UK retailer's customer review of the sister BMS-126WV+ calls these powerful little servos at a reasonable price, but warns not to leave them stalled for too long. It has also been used in speed-record foam planes.
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