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Technical Specifications
Last Updated: 2026-10-10
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
249.97 oz-in
18.00 kg-cm
1.8 N-m
Average
|
| Speed |
7.4V
0.08 sec/60°
750.0 deg/s
125.0 RPM
6.0V
0.10 sec/60°
600.0 deg/s
100.0 RPM
Above Average
|
| Stall Current | 3.4–3.4 A3400–3400 mAAverage |
| 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 | 5.000 A5,000 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 57% of 1043 Digital Standard servos at 6.0V |
| Speed | Above Average Faster than 77% of 1041 Digital Standard servos at 6.0V |
| Weight | Average Lighter than 47% of 1902 Digital Standard servos |
| Stall Current | Average Lower draw than 45% of 539 Digital Standard servos |
Performance Analysis
| Shaft Power | 4.62–6.42 W |
| Power Density | 3.281 W/in³ More power-dense than 62% of 1759 Digital Standard servos |
| Torque Density | 3.9058 oz-in/g Stronger than 58% of 1036 Digital Standard servos |
| Torque-to-Volume Ratio | 127.76 oz-in/in³ Denser torque than 56% of 1042 Digital Standard servos |
| Speed-to-Weight | 0.15625 (1/sec·g) Faster than 74% of 1033 Digital Standard servos |
| Speed-Torque Trade-off | 25.00 Better balanced than 44% of 1031 Digital Standard servos |
| Current-per-Torque Ratio | 0.0136 A/oz-in More efficient than 57% of 315 Digital Standard servos |
| Torque Gain per Volt | 7.94%/V More voltage-responsive (torque) than 12% of 850 Digital Standard servos |
| Speed Gain per Volt | 17.86%/V More voltage-responsive (speed) than 66% of 871 Digital Standard servos |
| Voltage Range Width | 1.4 V Wider voltage range than 36% of 1539 Digital Standard servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0020 Finer dead band than 35% of 468 Digital Standard servos |
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