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Technical Specifications
Last Updated: 2026-10-23
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | NSD-RS25 |
| Category | Hobby |
| Performance | |
| Torque |
16.8V
2,650.00 oz-in
190.82 kg-cm
18.7 N-m
12.6V
2,175.00 oz-in
156.62 kg-cm
15.4 N-m
8.4V
1,520.00 oz-in
109.45 kg-cm
10.7 N-m
Above Average
|
| Speed |
16.8V
0.08 sec/60°
800.0 deg/s
133.3 RPM
12.6V
0.10 sec/60°
618.6 deg/s
103.1 RPM
8.4V
0.15 sec/60°
400.0 deg/s
66.7 RPM
Above Average
|
| Running Current |
16.8V
1.370 A
1,370 mA
12.6V
1.090 A
1,090 mA
8.4V
0.970 A
970 mA
Average
|
| Stall Current | 6.4–10.7 A6400–10700 mABelow Average |
| Physical | |
| Weight | 8.75 oz248.0 gAverage |
| Dimensions |
L 2.539 in W 2.256 in H 1.181 in L 64.5 mm W 57.3 mm H 30.0 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Brushless |
| Gears | Stainless Steel |
| Gear Spline/Teeth | 15 T |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 180° |
| Neutral Position | 1500 µs |
| Dead Band | 2 µs |
| Angle Sensor | Potentiometer |
| Electrical & Environment | |
| Operating Voltage | 8.4–16.8 V |
| Power Source | Direct |
| Regulator Type | Direct |
| Temperature | -10–50 °C14–122 °F |
| Water Rating | IP67 |
| Connectivity | |
| Connector | JST |
| Wire Length | 300 mm11.81 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 | Above Average Stronger than 82% of 88 Digital Giant servos at 8.4V |
| Speed | Above Average Faster than 85% of 89 Digital Giant servos at 8.4V |
| Weight | Average Lighter than 38% of 168 Digital Giant servos |
| Running Current | Average Lower draw than 39% of 29 Digital Giant servos at 8.4V |
| Stall Current | Below Average Lower draw than 17% of 108 Digital Giant servos |
Performance Analysis
| Shaft Power | 18.74–65.33 W |
| Power Density | 9.658 W/in³ 1st-highest power density of 136 Digital Giant servos |
| Torque Density | 6.1290 oz-in/g Stronger than 87% of 85 Digital Giant servos |
| Torque-to-Volume Ratio | 224.69 oz-in/in³ Denser torque than 90% of 88 Digital Giant servos |
| Speed-to-Weight | 0.02688 (1/sec·g) Faster than 52% of 86 Digital Giant servos |
| Speed-Torque Trade-off | 228.00 Better balanced than 71% of 85 Digital Giant servos |
| Current-per-Torque Ratio | 0.0070 A/oz-in More efficient than 46% of 47 Digital Giant servos |
| No-Load vs Stall Current Spread | 11.03 Narrower current spread than 50% of 27 Digital Giant servos |
| Torque Gain per Volt | 8.85%/V More voltage-responsive (torque) than 35% of 69 Digital Giant servos |
| Speed Gain per Volt | 11.90%/V More voltage-responsive (speed) than 43% of 71 Digital Giant servos |
| Voltage Range Width | 8.4 V Wider voltage range than 75% of 160 Digital Giant servos |
Similar Active Servos
Other Versions
This model has 1 other version. Only specs that differ are shown.
V1
Discontinued- Torque @ 8.4V 1600 oz-in
- Torque @ 12.6V 2100 oz-in
- Torque @ 16.8V 2700 oz-in
- Speed @ 8.4V 0.21 sec/60°
- Speed @ 12.6V 0.16 sec/60°
- Speed @ 16.8V 0.11 sec/60°
Reviews (3)
Includes 3 reviews aggregated from around the web.
There are few reviews for this servo on the web. Owners in large-scale and crawler groups recommend it as the best servo available in its size, citing its strength, speed and reliability, including as a replacement servo for a Honcho-style crawler.
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