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Technical Specifications
Last Updated: 2026-10-24
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | BLS159 |
| Category | Hobby |
| Performance | |
| Torque |
7.4V
208.31 oz-in
15.00 kg-cm
1.5 N-m
6.0V
138.87 oz-in
10.00 kg-cm
1.0 N-m
Average
4.8V
111.10 oz-in
8.00 kg-cm
0.8 N-m
|
| Speed |
7.4V0.11 sec/60°545.5 deg/s90.9 RPM |
| Stall Current | ≤3.85 A≤3850 mAAverage |
| Physical | |
| Weight | 1.94 oz55.0 gAverage |
| Dimensions |
L 1.57 in W 0.79 in H 1.04 in L 39.9 mm W 20.1 mm H 26.4 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Brushless |
| Gears | Steel |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 100° |
| Pulse Cycle | 3 ms |
| Pulse Width | 900-2100 µs |
| Neutral Position | 1520 µs |
| Refresh Rate | 333 Hz |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Programmable | Yes |
| Electrical & Environment | |
| Operating Voltage | 6–8.4 V |
| Temperature | -10–65 °C14–149 °F |
| Connectivity | |
| Connector | JR (Universal) estimate |
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 42% of 186 Digital Low Profile servos at 6.0V |
| Weight | Average Lighter than 36% of 304 Digital Low Profile servos |
| Stall Current | Average Lower draw than 43% of 81 Digital Low Profile servos |
Performance Analysis
| Shaft Power | 3.50 W |
| Power Density | 2.715 W/in³ More power-dense than 40% of 273 Digital Low Profile servos |
| Torque Density | 2.5249 oz-in/g Stronger than 37% of 185 Digital Low Profile servos |
| Torque-to-Volume Ratio | 107.66 oz-in/in³ Denser torque than 52% of 186 Digital Low Profile servos |
| Speed-to-Weight | 0.16529 (1/sec·g) |
| Speed-Torque Trade-off | 15.27 |
| Current-per-Torque Ratio | 0.0277 A/oz-in More efficient than 37% of 58 Digital Low Profile servos |
| Voltage Range Width | 2.4 V Wider voltage range than 51% of 276 Digital Low Profile servos |
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