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Technical Specifications
Last Updated: 2026-10-10
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | BLS4050MED |
| Category | Hobby |
| Performance | |
| Torque |
12.6V
694.50 oz-in
50.01 kg-cm
4.9 N-m
11.1V
625.05 oz-in
45.01 kg-cm
4.4 N-m
8.4V
486.15 oz-in
35.01 kg-cm
3.4 N-m
|
| Speed |
12.6V
0.08 sec/60°
750.0 deg/s
125.0 RPM
11.1V
0.09 sec/60°
666.7 deg/s
111.1 RPM
8.4V
0.12 sec/60°
500.0 deg/s
83.3 RPM
|
| Physical | |
| Weight | 2.82 oz80.0 gBottom 10% |
| Dimensions |
L 1.57 in W 0.79 in H 1.59 in L 39.9 mm W 20.1 mm H 40.4 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Brushless |
| Gears | Steel |
| Gear Spline/Teeth | 25 T |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 180° |
| Pulse Width | 500-2500 µs |
| Angle Sensor | Magnetic Encoder |
| Programmable | Yes |
| Electrical & Environment | |
| Operating Voltage | 6–12.6 V |
| Water Rating | Waterproof |
| Connectivity | |
| Connector | JR (Universal) |
| 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
| Weight | Bottom 10% Lighter than 10% of 1902 Digital Standard servos |
Performance Analysis
| Shaft Power | 7.49–16.05 W |
| Power Density | 8.139 W/in³ More power-dense than 94% of 1759 Digital Standard servos |
| Torque Density | 6.0769 oz-in/g |
| Torque-to-Volume Ratio | 246.52 oz-in/in³ |
| Speed-to-Weight | 0.10417 (1/sec·g) |
| Speed-Torque Trade-off | 58.34 |
| Voltage Range Width | 6.6 V Wider voltage range than 99% of 1539 Digital Standard servos |
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