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Technical Specifications
Last Updated: 2026-10-25
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | CYS-BLS9125 |
| Category | Hobby |
| Performance | |
| Torque |
7.2V
347.18 oz-in
25.00 kg-cm
2.5 N-m
6.0V
319.41 oz-in
23.00 kg-cm
2.3 N-m
Above 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
|
| Running Current |
7.4V
0.150 A
150 mA
6.0V
0.120 A
120 mA
Above Average
|
| Stall Current | 3.4–4.2 A3400–4200 mABelow Average |
| Physical | |
| Weight | 2.89 oz82.0 gBottom 10% |
| Dimensions |
L 1.575 in W 0.787 in H 1.63 in L 40.0 mm W 20.0 mm H 41.4 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Brushless |
| Gears | Steel |
| Gear Spline/Teeth | 25 T |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Direction | Counterclockwise |
| Rotational Range | 90° |
| 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 |
| Water Rating | Waterproof |
| Idle Current | 0.020 A20 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 | Above Average Stronger than 72% of 1060 Digital Standard servos at 6.0V |
| Speed | Above Average Faster than 73% of 1045 Digital Standard servos at 6.0V |
| Weight | Bottom 10% Lighter than 8% of 1880 Digital Standard servos |
| Running Current | Above Average Lower draw than 78% of 226 Digital Standard servos at 6.0V |
| Stall Current | Below Average Lower draw than 34% of 570 Digital Standard servos |
Performance Analysis
| Shaft Power | 5.37 W |
| Power Density | 2.657 W/in³ More power-dense than 55% of 1768 Digital Standard servos |
| Torque Density | 3.8952 oz-in/g Stronger than 59% of 1053 Digital Standard servos |
| Torque-to-Volume Ratio | 158.09 oz-in/in³ Denser torque than 69% of 1058 Digital Standard servos |
| Speed-to-Weight | 0.11087 (1/sec·g) Faster than 47% of 1038 Digital Standard servos |
| Speed-Torque Trade-off | 35.13 Better balanced than 58% of 1034 Digital Standard servos |
| Current-per-Torque Ratio | 0.0131 A/oz-in More efficient than 58% of 331 Digital Standard servos |
| Idle-to-Running Current Ratio | 0.167 Lower idle draw than 23% of 167 Digital Standard servos |
| No-Load vs Stall Current Spread | 35.00 Narrower current spread than 26% of 179 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 34% of 1560 Digital Standard servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0020 Finer dead band than 31% of 504 Digital Standard servos |
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