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Technical Specifications
Last Updated: 2026-09-24
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | NSD-RS20 |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
8.4V
2,157.00 oz-in
155.32 kg-cm
15.2 N-m
7.4V
1,944.00 oz-in
139.98 kg-cm
13.7 N-m
6.0V
1,610.00 oz-in
115.93 kg-cm
11.4 N-m
|
| Speed |
8.4V
0.10 sec/60°
600.0 deg/s
100.0 RPM
7.4V
0.12 sec/60°
500.0 deg/s
83.3 RPM
6.0V
0.14 sec/60°
428.6 deg/s
71.4 RPM
|
| Running Current |
8.4V
1.280 A
1,280 mA
7.4V
1.100 A
1,100 mA
6.0V
0.970 A
970 mA
|
| Stall Current | 8.6–12.3 A8600–12300 mABelow Average |
| Physical | |
| Weight | 10.16 oz288.0 gBelow Average |
| Dimensions |
L 2.539 in W 1.181 in H 2.244 in L 64.5 mm W 30.0 mm H 57.0 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Brushless |
| Gears | Steel |
| Gear Spline/Teeth | 15 T |
| Shaft Size | 7.5 mm |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 180° |
| Pulse Cycle | 3 ms |
| Neutral Position | 1500 µs |
| Dead Band | 2 µs |
| Refresh Rate | 330 Hz |
| Angle Sensor | Potentiometer |
| Electrical & Environment | |
| Operating Voltage | 5–8.4 V |
| Power Source | External |
| Regulator Type | BEC |
| Temperature | -10–50 °C14–122 °F |
| Water Rating | IP67 |
| Connectivity | |
| Wire Length | 260 mm10.24 in |
| Origin | |
| Country of Origin | USA |
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 30% of 168 Digital Giant servos |
| Stall Current | Below Average Lower draw than 14% of 108 Digital Giant servos |
Performance Analysis
| Shaft Power | 21.26–39.88 W |
| Power Density | 5.927 W/in³ 4th-highest power density of 136 Digital Giant servos |
| Torque Density | 5.5903 oz-in/g |
| Torque-to-Volume Ratio | 239.27 oz-in/in³ |
| Speed-to-Weight | 0.02480 (1/sec·g) |
| Speed-Torque Trade-off | 225.39 |
| Current-per-Torque Ratio | 0.0076 A/oz-in |
| No-Load vs Stall Current Spread | 12.68 |
| Voltage Range Width | 3.4 V Wider voltage range than 46% of 160 Digital Giant servos |
Notes
This servo requires a 10 amp or greater BEC.
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