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Technical Specifications
Last Updated: 2026-10-25
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | SM120BL |
| Category | Hobby |
| Performance | |
| Torque |
24.0V1,666.80 oz-in120.02 kg-cm11.8 N-m |
| Speed |
24.0V0.20 sec/60°300.0 deg/s50.0 RPM |
| Running Current |
24.0V0.200 A200 mA |
| Stall Current | ≤4 A≤4000 mAAbove Average |
| Physical | |
| Weight | 17.11 oz485.0 gBelow Average |
| Dimensions |
L 3.071 in W 1.693 in H 2.579 in L 78.0 mm W 43.0 mm H 65.5 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Brushless |
| Gears | Steel |
| Rotation Mode | Multi-turn |
| Rotation/Support | Dual Bearings |
| Backlash | 0.800° |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 360° |
| Refresh Rate | 1000 Hz |
| Angle Sensor | Magnetic Encoder |
| Control System | RS485 |
| Programmable | Yes |
| Electrical & Environment | |
| Operating Voltage | 9–25 V |
| Temperature | -20–60 °C-4–140 °F |
| Idle Current | 0.040 A40 mA |
| Connectivity | |
| 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
| Weight | Below Average Lighter than 17% of 168 Digital Giant servos |
| Stall Current | Above Average Lower draw than 80% of 108 Digital Giant servos |
Performance Analysis
| Shaft Power | 15.41 W |
| Power Density | 1.149 W/in³ More power-dense than 33% of 136 Digital Giant servos |
| Torque Density | 3.4367 oz-in/g |
| Torque-to-Volume Ratio | 124.33 oz-in/in³ |
| Speed-to-Weight | 0.01031 (1/sec·g) |
| Speed-Torque Trade-off | 333.36 |
| Current-per-Torque Ratio | 0.0024 A/oz-in |
| Idle-to-Running Current Ratio | 0.200 |
| No-Load vs Stall Current Spread | 20.00 |
| Voltage Range Width | 16.0 V Wider voltage range than 88% of 160 Digital Giant servos |
| Backlash-to-Range Ratio | 0.00222 Tighter backlash than 15% of 49 Digital Giant servos |
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