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Technical Specifications
Last Updated: 2026-10-10
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | BMS-A204WP |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
125.01 oz-in
9.00 kg-cm
0.9 N-m
7.4V
108.34 oz-in
7.80 kg-cm
0.8 N-m
6.0V
91.67 oz-in
6.60 kg-cm
0.6 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
0.12 sec/60°
500.0 deg/s
83.3 RPM
|
| Physical | |
| Weight | 0.73 oz20.7 gBottom 10% |
| Dimensions |
L 0.906 in W 0.512 in H 0.996 in L 23.0 mm W 13.0 mm H 25.3 mm |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Metal |
| Gear Spline/Teeth | 25 T |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Neutral Position | 1500 µs |
| Dead Band | 1 µs |
| Refresh Rate | 333 Hz |
| Control System | PWM |
| Electrical & Environment | |
| Operating Voltage | 4.5–8.5 V |
| Power Source | 2S Li-Po / 2S Li-Fe |
| Temperature | -10–60 °C14–140 °F |
| Water Rating | Waterproof |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Wire Length | 300 mm11.81 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 | Bottom 10% Lighter than 10% of 620 Digital Micro servos |
Performance Analysis
| Shaft Power | 1.41–2.57 W |
| Power Density | 5.559 W/in³ More power-dense than 84% of 590 Digital Micro servos |
| Torque Density | 4.4285 oz-in/g |
| Torque-to-Volume Ratio | 198.41 oz-in/in³ |
| Speed-to-Weight | 0.40258 (1/sec·g) |
| Speed-Torque Trade-off | 11.00 |
| Voltage Range Width | 4.0 V Wider voltage range than 91% of 511 Digital Micro servos |
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