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Technical Specifications
Last Updated: 2026-09-14
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | M45CHW |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
624.93 oz-in
45.00 kg-cm
4.4 N-m
6.0V
486.06 oz-in
35.00 kg-cm
3.4 N-m
Top 10%
|
| Speed |
8.4V
0.11 sec/60°
545.5 deg/s
90.9 RPM
6.0V
0.12 sec/60°
500.0 deg/s
83.3 RPM
Average
|
| Running Current |
8.4V
7.000 A
7,000 mA
6.0V
5.000 A
5,000 mA
Bottom 10%
|
| Stall Current | 4.5–6.8 A4500–6800 mABelow Average |
| Physical | |
| Weight | 2.65 oz75.0 gBelow Average |
| 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 | Coreless |
| Motor Drive | MOS |
| Gears | Metal |
| Gear Spline/Teeth | 25 T |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Direction | Counterclockwise |
| Rotational Range | 60° |
| Mechanical Limit | 180° |
| Pulse Width | 500-2500 µs |
| Neutral Position | 1500 µs |
| Dead Band | 2 µs |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Electrical & Environment | |
| Operating Voltage | 6–8.4 V |
| Regulator Type | Direct |
| Temperature | -20–60 °C-4–140 °F |
| Water Rating | IP67 |
| Idle Current | 0.600 A600 mA |
| 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
| Torque | Top 10% Stronger than 90% of 1043 Digital Standard servos at 6.0V |
| Speed | Average Faster than 60% of 1041 Digital Standard servos at 6.0V |
| Weight | Below Average Lighter than 20% of 1902 Digital Standard servos |
| Running Current | Bottom 10% Lower draw than 5% of 173 Digital Standard servos at 6.0V |
| Stall Current | Below Average Lower draw than 12% of 539 Digital Standard servos |
Performance Analysis
| Shaft Power | 7.49–10.50 W |
| Power Density | 5.327 W/in³ More power-dense than 80% of 1759 Digital Standard servos |
| Torque Density | 6.4808 oz-in/g Stronger than 90% of 1036 Digital Standard servos |
| Torque-to-Volume Ratio | 246.47 oz-in/in³ Denser torque than 90% of 1042 Digital Standard servos |
| Speed-to-Weight | 0.11111 (1/sec·g) Faster than 46% of 1033 Digital Standard servos |
| Speed-Torque Trade-off | 58.33 Better balanced than 84% of 1031 Digital Standard servos |
| Current-per-Torque Ratio | 0.0140 A/oz-in More efficient than 55% of 315 Digital Standard servos |
| Idle-to-Running Current Ratio | 0.120 Lower idle draw than 40% of 112 Digital Standard servos |
| No-Load vs Stall Current Spread | 1.36 Narrower current spread than 91% of 132 Digital Standard servos |
| Torque Gain per Volt | 11.90%/V More voltage-responsive (torque) than 26% of 850 Digital Standard servos |
| Speed Gain per Volt | 3.79%/V More voltage-responsive (speed) than 1% of 871 Digital Standard servos |
| Voltage Range Width | 2.4 V Wider voltage range than 49% of 1539 Digital Standard servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0010 Finer dead band than 79% of 468 Digital Standard servos |
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