Discover XQ-Power Servos in Our eBay Store!
Shop Now
Technical Specifications
Last Updated: 2026-08-28
|
Identity
Performance
Physical
Drivetrain
Control & Signal
Electrical & Environment
Connectivity
Origin
Preferences are saved automatically.
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | XQ-S4020D |
| Category | Hobby |
| Performance | |
| Torque |
6.0V
302.80 oz-in
21.80 kg-cm
2.1 N-m
4.8V
256.90 oz-in
18.50 kg-cm
1.8 N-m
|
| Speed |
6.0V
0.13 sec/60°
461.5 deg/s
76.9 RPM
4.8V
0.15 sec/60°
400.0 deg/s
66.7 RPM
|
| Running Current |
6.0V
0.150 A
150 mA
4.8V
0.125 A
125 mA
|
| Stall Current | 1.185–1.42 A1185–1420 mA |
| Physical | |
| Weight | 2.03 oz57.5 g |
| Dimensions |
L 1.58 in W 0.79 in H 1.53 in L 40.2 mm W 20.1 mm H 38.8 mm |
| Case Material | Plastic / Aluminum |
| Drivetrain | |
| Motor Type | Coreless |
| Motor Drive | (add) |
| Gears | Titanium |
| Gear Spline/Teeth | 25 T |
| Shaft Size | (add) |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Backlash | (add) |
| Control & Signal | |
| Modulation | Digital |
| Direction | Counterclockwise |
| Rotational Range | 110° |
| Mechanical Limit | 210° |
| Pulse Cycle | (add) |
| Pulse Width | 800-2200 µs |
| Neutral Position | 1500 µs |
| Dead Band | 2 µs |
| Refresh Rate | (add) |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Programmable | (add) |
| Signal Voltage | (add) |
| Electrical & Environment | |
| Operating Voltage | 4.8–6 V |
| Power Source | 2S Li-Po |
| Regulator Type | (add) |
| Temperature | -15–60 °C5–140 °F |
| Water Rating | Splashproof |
| Certification | CE |
| Idle Current | 0.009 A9 mA |
| Connectivity | |
| Connector | JR (Universal) |
| Wire Length | 300 mm11.81 in |
| Origin | |
| Country of Origin | China |
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.
Performance Analysis
| Shaft Power | 3.17–4.31 W |
| Torque Density | 4.4678 oz-in/g Stronger than 70% of the 832 Digital Standard servos in the database |
| Torque-to-Volume Ratio | 134.27 oz-in/in³ Denser torque than 60% of the 843 Digital Standard servos in the database |
| Power Density | 2.251 W/in³ More power-dense than 49% of the 1644 Digital Standard servos in the database |
| Speed-to-Weight | 0.11594 (1/sec·g) Faster than 49% of the 821 Digital Standard servos in the database |
| Speed-Torque Trade-off | 38.54 Better balanced than 66% of the 826 Digital Standard servos in the database |
| Current-per-Torque Ratio | 0.0055 A/oz-in 3rd-highest current-per-torque ratio of 231 Digital Standard servos |
| Idle-to-Running Current Ratio | 0.072 Lower idle draw than 38% of the 27 Digital Standard servos in the database |
| No-Load vs Stall Current Spread | 11.36 Narrower current spread than 63% of the 49 Digital Standard servos in the database |
| Torque Gain per Volt | 14.89%/V More voltage-responsive (torque) than 43% of the 673 Digital Standard servos in the database |
| Speed Gain per Volt | 12.81%/V More voltage-responsive (speed) than 34% of the 687 Digital Standard servos in the database |
| Voltage Range Width | 1.2 V Wider voltage range than 16% of the 1269 Digital Standard servos in the database |
| Dead-Band-to-Pulse-Width Ratio | 0.0014 Finer dead band than 62% of the 327 Digital Standard servos in the database |
Quick Actions
Similar Active Servos
Reviews (2)
-
rc boats
May 6, 2018Application(s): rudder for rc gas boat/s
Comments: have damaged one , have had a good run with the one thats in my cat (R42)
rcmodeller324
October 8, 2016Application(s): All servos on 88" 3D aircraft.
Comments: These servos are precise and very smooth. I operate them on 6 volt and have lots of torque! High quality and great price