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Technical Specifications
Last Updated: 2026-09-14| Identity | |
| Brand |  |
| Product Number | NES591 |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
4.8V71.00 oz-in5.11 kg-cm0.5 N-mAverage |
| Speed |
4.8V0.24 sec/60°250.0 deg/s41.7 RPMBottom 10% |
| Physical | |
| Weight | 1.34 oz38.0 gAbove Average |
| Dimensions |
L 1.52 in W 0.75 in H 1.18 in L 38.6 mm W 19.0 mm H 30.0 mm |
| Drivetrain | |
| Gears | Plastic |
| Gear Spline/Teeth | 23 T estimate |
| Rotation Mode | Positional |
| Rotation/Support | Single Bearing |
| Control & Signal | |
| Modulation | Analog |
| Pulse Width | 1000-2000 µs |
| Electrical & Environment | |
| Operating Voltage | 4.8–6 V |
| Connectivity | |
| Connector | JR (Universal) |
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 | Average Stronger than 49% of 157 Analog Standard servos at 4.8V |
| Speed | Bottom 10% Faster than 8% of 156 Analog Standard servos at 4.8V |
| Weight | Above Average Lighter than 88% of 430 Analog Standard servos |
Performance Analysis
| Shaft Power | 0.55 W |
| Power Density | 0.407 W/in³ More power-dense than 30% of 421 Analog Standard servos |
| Torque Density | 1.8684 oz-in/g Stronger than 58% of 157 Analog Standard servos |
| Torque-to-Volume Ratio | 52.78 oz-in/in³ Denser torque than 65% of 157 Analog Standard servos |
| Speed-to-Weight | 0.10965 (1/sec·g) Faster than 45% of 156 Analog Standard servos |
| Speed-Torque Trade-off | 17.04 Better balanced than 66% of 156 Analog Standard servos |
| Voltage Range Width | 1.2 V Wider voltage range than 56% of 186 Analog Standard servos |
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Reviews (2)
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Boombaby
March 20, 2017Application(s): Planes heli and jets(rudder)
Comments: Excellent all round servo have used this servo for many many years, long lasting gear train and I have used these on 6v nimh packs although be warned the life span of the servo will be affected but to give an example
10 years in 6v on a plane flown most weekends for atleast 5 flights in a .60 size aerobatic model.Duckby
January 4, 2012Application(s): Trainer .46 every thing
Comments: For simple use you can not get better. had over 100 flights now and still solid no problems still tight and more then enough for a trainer