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Technical Specifications
Last Updated: 2026-10-25
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | DS558HS |
| Category | Hobby |
| Performance | |
| Torque |
7.4V
277.60 oz-in
19.99 kg-cm
2.0 N-m
6.0V
213.20 oz-in
15.35 kg-cm
1.5 N-m
Average
|
| Speed |
7.4V
0.20 sec/60°
300.0 deg/s
50.0 RPM
6.0V
0.22 sec/60°
272.7 deg/s
45.5 RPM
Bottom 10%
|
| Running Current |
8.4V
0.380 A
380 mA
6.0V
0.320 A
320 mA
Below Average
|
| Stall Current | 1.9–2.2 A1900–2200 mAAbove Average |
| Physical | |
| Weight | 2.05 oz58.0 gAbove Average |
| Dimensions |
L 1.575 in W 0.787 in H 1.516 in L 40.0 mm W 20.0 mm H 38.5 mm |
| Case Material | Plastic |
| Drivetrain | |
| Motor Type | Brushed |
| Gears | Metal |
| Gear Spline/Teeth | 25 T |
| Rotation/Support | Single Bearing |
| Control & Signal | |
| Modulation | Digital |
| Direction | Counterclockwise |
| Rotational Range | 90° |
| Mechanical Limit | 180° |
| Pulse Width | 900-2100 µs |
| Dead Band | 3 µs |
| Control System | PWM |
| Electrical & Environment | |
| Operating Voltage | 6–8.4 V |
| Temperature | -20–60 °C-4–140 °F |
| Certification | CE | ROHS | ISO9001 |
| Idle Current | 0.003 A3 mA |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Wire Length | 60 mm2.36 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 | Average Stronger than 50% of 1060 Digital Standard servos at 6.0V |
| Speed | Bottom 10% Faster than 6% of 1045 Digital Standard servos at 6.0V |
| Weight | Above Average Lighter than 66% of 1880 Digital Standard servos |
| Running Current | Below Average Lower draw than 28% of 226 Digital Standard servos at 6.0V |
| Stall Current | Above Average Lower draw than 84% of 570 Digital Standard servos |
Performance Analysis
| Shaft Power | 1.79–2.57 W |
| Power Density | 1.366 W/in³ More power-dense than 28% of 1768 Digital Standard servos |
| Torque Density | 3.6759 oz-in/g Stronger than 54% of 1053 Digital Standard servos |
| Torque-to-Volume Ratio | 113.44 oz-in/in³ Denser torque than 50% of 1058 Digital Standard servos |
| Speed-to-Weight | 0.07837 (1/sec·g) Faster than 12% of 1038 Digital Standard servos |
| Speed-Torque Trade-off | 46.91 Better balanced than 72% of 1034 Digital Standard servos |
| Current-per-Torque Ratio | 0.0103 A/oz-in More efficient than 77% of 331 Digital Standard servos |
| Idle-to-Running Current Ratio | 0.009 Lower idle draw than 92% of 167 Digital Standard servos |
| No-Load vs Stall Current Spread | 6.88 Narrower current spread than 82% of 179 Digital Standard servos |
| Voltage Range Width | 2.4 V Wider voltage range than 55% of 1560 Digital Standard servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0025 Finer dead band than 11% of 504 Digital Standard servos |
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