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Technical Specifications
Last Updated: 2026-10-08
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | SM-40BL-C001 |
| Category | Hobby |
| Performance | |
| Torque |
12.0V
555.60 oz-in
40.01 kg-cm
3.9 N-m
6.0V
44.45 oz-in
3.20 kg-cm
0.3 N-m
|
| Speed |
12.0V
0.15 sec/60°
400.0 deg/s
66.7 RPM
12.0V
0.15 sec/60°
400.0 deg/s
66.7 RPM
|
| Stall Current | 1.5–2.5 A1500–2500 mAAbove Average |
| Physical | |
| Weight | 3.53 oz100.0 gBelow Average |
| Dimensions |
L 1.831 in W 1.122 in H 1.339 in L 46.5 mm W 28.5 mm H 34.0 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Copper |
| Gear Spline/Teeth | 25 T |
| Rotation Mode | Multi-turn |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 360° |
| Refresh Rate | 333 Hz |
| Angle Sensor | Magnetic Encoder |
| Control System | RS485 |
| Programmable | Yes |
| Electrical & Environment | |
| Operating Voltage | 9–16 V |
| Temperature | -20–80 °C-4–176 °F |
| Idle Current | 0.040 A40 mA |
| Connectivity | |
| Wire Length | 150 mm5.91 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
| Weight | Below Average Lighter than 29% of 143 Digital Large servos |
| Stall Current | Above Average Lower draw than 72% of 97 Digital Large servos |
Performance Analysis
| Shaft Power | 6.85 W |
| Power Density | 2.491 W/in³ More power-dense than 81% of 108 Digital Large servos |
| Torque Density | 0.4445 oz-in/g |
| Torque-to-Volume Ratio | 16.17 oz-in/in³ |
| Speed-to-Weight | 0.06667 (1/sec·g) |
| Speed-Torque Trade-off | 6.67 |
| Current-per-Torque Ratio | 0.0562 A/oz-in |
| Voltage Range Width | 7.0 V Wider voltage range than 88% of 131 Digital Large servos |
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