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Technical Specifications
Last Updated: 2026-10-23
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | NSD-RS500B |
| Category | Hobby |
| Performance | |
| Torque |
16.8V
520.00 oz-in
37.44 kg-cm
3.7 N-m
12.6V
430.00 oz-in
30.96 kg-cm
3.0 N-m
8.4V
310.00 oz-in
22.32 kg-cm
2.2 N-m
Above Average
|
| Speed |
16.8V
0.09 sec/60°
666.7 deg/s
111.1 RPM
12.6V
0.12 sec/60°
500.0 deg/s
83.3 RPM
8.4V
0.15 sec/60°
400.0 deg/s
66.7 RPM
Average
|
| Stall Current | 1.5–2.5 A1500–2500 mAAbove Average |
| Physical | |
| Weight | 2.40 oz68.0 gBelow Average |
| Dimensions |
L 1.602 in W 0.803 in H 1.555 in L 40.7 mm W 20.4 mm H 39.5 mm |
| Case Material | Aluminum / Plastic |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Stainless Steel |
| Gear Spline/Teeth | 25 T |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| 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 | IP66 |
| Connectivity | |
| 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 75% of 1307 Standard servos at 8.4V |
| Speed | Average Faster than 44% of 1289 Standard servos at 8.4V |
| Weight | Below Average Lighter than 30% of 2491 Standard servos |
| Stall Current | Above Average Lower draw than 70% of 648 Standard servos |
Performance Analysis
| Shaft Power | 3.82–10.68 W |
| Power Density | 5.338 W/in³ More power-dense than 85% of 2363 Standard servos |
| Torque Density | 4.5588 oz-in/g Stronger than 76% of 1299 Standard servos |
| Torque-to-Volume Ratio | 154.90 oz-in/in³ Denser torque than 73% of 1303 Standard servos |
| Speed-to-Weight | 0.09804 (1/sec·g) Faster than 32% of 1281 Standard servos |
| Speed-Torque Trade-off | 46.50 Better balanced than 77% of 1278 Standard servos |
| Current-per-Torque Ratio | 0.0081 A/oz-in More efficient than 92% of 392 Standard servos |
| Torque Gain per Volt | 8.06%/V More voltage-responsive (torque) than 11% of 1064 Standard servos |
| Speed Gain per Volt | 7.94%/V More voltage-responsive (speed) than 7% of 1065 Standard servos |
| Voltage Range Width | 8.4 V Wider voltage range than 99% of 1867 Standard servos |
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Reviews (100)
Includes 100 reviews aggregated from around the web.
There are few reviews for this servo on the web. A crawler YouTuber was very pleased with his budget RS500B, then used it as a backup servo after his usual servo broke a gear twice, and asked whether a budget servo is good enough for a serious crawler.
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