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Technical Specifications
Last Updated: 2026-10-10
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | DS538HS |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
153.24 oz-in
11.03 kg-cm
1.1 N-m
6.0V
113.26 oz-in
8.16 kg-cm
0.8 N-m
Below Average
|
| Speed |
8.4V
0.12 sec/60°
500.0 deg/s
83.3 RPM
6.0V
0.13 sec/60°
461.5 deg/s
76.9 RPM
Average
|
| Running Current |
8.4V
0.520 A
520 mA
6.0V
0.320 A
320 mA
Average
|
| Stall Current | 1.9–2 A1900–2000 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 Mode | Positional |
| Rotation/Support | Single Bearing |
| Control & Signal | |
| Modulation | Digital |
| 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 | Below Average Stronger than 22% of 1043 Digital Standard servos at 6.0V |
| Speed | Average Faster than 55% of 1041 Digital Standard servos at 6.0V |
| Weight | Above Average Lighter than 66% of 1902 Digital Standard servos |
| Running Current | Average Lower draw than 35% of 173 Digital Standard servos at 6.0V |
| Stall Current | Above Average Lower draw than 87% of 539 Digital Standard servos |
Performance Analysis
| Shaft Power | 1.61–2.36 W |
| Power Density | 1.256 W/in³ More power-dense than 24% of 1759 Digital Standard servos |
| Torque Density | 1.9528 oz-in/g Stronger than 21% of 1036 Digital Standard servos |
| Torque-to-Volume Ratio | 60.26 oz-in/in³ Denser torque than 20% of 1042 Digital Standard servos |
| Speed-to-Weight | 0.13263 (1/sec·g) Faster than 61% of 1033 Digital Standard servos |
| Speed-Torque Trade-off | 14.73 Better balanced than 25% of 1031 Digital Standard servos |
| Current-per-Torque Ratio | 0.0177 A/oz-in More efficient than 39% of 315 Digital Standard servos |
| Idle-to-Running Current Ratio | 0.009 Lower idle draw than 96% of 112 Digital Standard servos |
| No-Load vs Stall Current Spread | 6.25 Narrower current spread than 80% of 132 Digital Standard servos |
| Torque Gain per Volt | 14.71%/V More voltage-responsive (torque) than 42% of 850 Digital Standard servos |
| Speed Gain per Volt | 3.48%/V More voltage-responsive (speed) than 1% of 871 Digital Standard servos |
| Voltage Range Width | 2.4 V Wider voltage range than 56% of 1539 Digital Standard servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0025 Finer dead band than 11% of 468 Digital Standard servos |
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