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Technical Specifications
Last Updated: 2026-10-23
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | NSD-RS650 |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
940.00 oz-in
67.69 kg-cm
6.6 N-m
7.4V
812.00 oz-in
58.47 kg-cm
5.7 N-m
6.0V
705.00 oz-in
50.77 kg-cm
5.0 N-m
5.0V
611.00 oz-in
44.00 kg-cm
4.3 N-m
Top 10%
|
| Speed |
8.4V
0.09 sec/60°
666.7 deg/s
111.1 RPM
7.4V
0.11 sec/60°
545.5 deg/s
90.9 RPM
6.0V
0.13 sec/60°
461.5 deg/s
76.9 RPM
|
| Stall Current | 5.4–8.8 A5400–8800 mABottom 10% |
| Physical | |
| Weight | 2.50 oz71.0 gBottom 10% |
| Dimensions |
L 1.575 in W 0.787 in H 1.209 in L 40.0 mm W 20.0 mm H 30.7 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | 4-pole |
| Gears | Stainless Steel |
| Gear Spline/Teeth | 25 T |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 180° |
| Pulse Width | 1000-2000 µs |
| Neutral Position | 1500 µs |
| Dead Band | 2 µs |
| Refresh Rate | 330 Hz |
| Angle Sensor | Potentiometer |
| Electrical & Environment | |
| Operating Voltage | 5–8.4 V |
| Regulator Type | BEC |
| Temperature | -10–50 °C14–122 °F |
| Water Rating | IP66 |
| 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
| Torque | Top 10% Stronger than 99% of 186 Digital Low Profile servos at 5.0V |
| Weight | Bottom 10% Lighter than 5% of 304 Digital Low Profile servos |
| Stall Current | Bottom 10% Lower draw than 0% of 81 Digital Low Profile servos |
Performance Analysis
| Shaft Power | 10.03–19.31 W |
| Power Density | 12.887 W/in³ More power-dense than 98% of 273 Digital Low Profile servos |
| Torque Density | 8.6056 oz-in/g 2nd-highest torque density of 185 Digital Low Profile servos |
| Torque-to-Volume Ratio | 407.72 oz-in/in³ 2nd-highest torque-to-volume ratio of 186 Digital Low Profile servos |
| Speed-to-Weight | 0.10834 (1/sec·g) |
| Speed-Torque Trade-off | 79.44 |
| Current-per-Torque Ratio | 0.0144 A/oz-in More efficient than 77% of 58 Digital Low Profile servos |
| Torque Gain per Volt | 15.84%/V More voltage-responsive (torque) than 45% of 164 Digital Low Profile servos |
| Voltage Range Width | 3.4 V Wider voltage range than 63% of 276 Digital Low Profile servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0020 Finer dead band than 26% of 79 Digital Low Profile servos |
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Reviews (2)
Includes 2 reviews aggregated from around the web.
There are few reviews for this servo on the web. Video reviewers say it is the one they would recommend best from NSDRC's range, and one says he tested it alongside two other NSDRC servos.
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