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Technical Specifications
Last Updated: 2026-10-27
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | CYS-BLS5120 |
| Category | Hobby |
| Performance | |
| Torque |
7.4V
277.75 oz-in
20.00 kg-cm
2.0 N-m
6.0V
236.09 oz-in
17.00 kg-cm
1.7 N-m
Average
|
| Speed |
7.4V
0.09 sec/60°
666.7 deg/s
111.1 RPM
6.0V
0.11 sec/60°
545.5 deg/s
90.9 RPM
Above Average
|
| Stall Current | 3.4–4.2 A3400–4200 mABelow Average |
| Physical | |
| Weight | 2.26 oz64.0 gAverage |
| Dimensions |
L 1.587 in W 0.799 in H 1.543 in L 40.3 mm W 20.3 mm H 39.2 mm |
| Drivetrain | |
| Motor Type | Brushless |
| Gears | Titanium |
| Gear Spline/Teeth | 25 T |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Direction | Counterclockwise |
| Pulse Width | 1000-2000 µs |
| Neutral Position | 1500 µs |
| Dead Band | 2 µs |
| Control System | PWM |
| Electrical & Environment | |
| Operating Voltage | 6–7.4 V |
| Temperature | -10–50 °C14–122 °F |
| Idle Current | 0.005 A5 mA |
| Connectivity | |
| Connector | JR (Universal) estimate |
| 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
| Torque | Average Stronger than 54% of 1060 Digital Standard servos at 6.0V |
| Speed | Above Average Faster than 74% of 1045 Digital Standard servos at 6.0V |
| Weight | Average Lighter than 47% of 1880 Digital Standard servos |
| Stall Current | Below Average Lower draw than 34% of 570 Digital Standard servos |
Performance Analysis
| Shaft Power | 3.97–5.71 W |
| Power Density | 2.916 W/in³ More power-dense than 59% of 1768 Digital Standard servos |
| Torque Density | 3.6889 oz-in/g Stronger than 54% of 1053 Digital Standard servos |
| Torque-to-Volume Ratio | 120.67 oz-in/in³ Denser torque than 53% of 1058 Digital Standard servos |
| Speed-to-Weight | 0.14205 (1/sec·g) Faster than 69% of 1038 Digital Standard servos |
| Speed-Torque Trade-off | 25.97 Better balanced than 46% of 1034 Digital Standard servos |
| Current-per-Torque Ratio | 0.0178 A/oz-in More efficient than 35% of 331 Digital Standard servos |
| Torque Gain per Volt | 12.60%/V More voltage-responsive (torque) than 31% of 873 Digital Standard servos |
| Speed Gain per Volt | 15.87%/V More voltage-responsive (speed) than 52% of 874 Digital Standard servos |
| Voltage Range Width | 1.4 V Wider voltage range than 36% of 1560 Digital Standard servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0020 Finer dead band than 36% of 504 Digital Standard servos |
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