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Technical Specifications
Last Updated: 2026-10-10
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | HL-3955-C001 |
| Category | Hobby |
| Performance | |
| Torque |
12.0V763.95 oz-in55.01 kg-cm5.4 N-m |
| Speed |
12.0V0.18 sec/60°329.7 deg/s54.9 RPM |
| Running Current |
12.0V0.150 A150 mA |
| Stall Current | ≤3 A≤3000 mAAverage |
| Physical | |
| Weight | 3.00 oz85.0 gBottom 10% |
| Dimensions |
L 1.575 in W 0.787 in H 1.575 in L 40.0 mm W 20.0 mm H 40.0 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Steel |
| Rotation Mode | Multi-turn |
| Rotation/Support | Single Bearing |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 180° |
| Control System | TTL |
| Programmable | Yes |
| Electrical & Environment | |
| Operating Voltage | 9–12.6 V |
| Temperature | -20–60 °C-4–140 °F |
| Idle Current | 0.150 A150 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 | Bottom 10% Lighter than 4% of 1902 Digital Standard servos |
| Stall Current | Average Lower draw than 57% of 539 Digital Standard servos |
Performance Analysis
| Shaft Power | 7.76 W |
| Power Density | 3.976 W/in³ More power-dense than 70% of 1759 Digital Standard servos |
| Torque Density | 8.9877 oz-in/g |
| Torque-to-Volume Ratio | 391.32 oz-in/in³ |
| Speed-to-Weight | 0.06464 (1/sec·g) |
| Speed-Torque Trade-off | 139.03 |
| Current-per-Torque Ratio | 0.0039 A/oz-in |
| Idle-to-Running Current Ratio | 1.000 |
| No-Load vs Stall Current Spread | 20.00 |
| Voltage Range Width | 3.6 V Wider voltage range than 85% of 1539 Digital Standard servos |
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