Product Overview
The XQ-S8020D is a premium 8.4V high-voltage digital servo designed for industrial automation, professional RC modeling, and high-performance robotics. Combining the thermal advantages of a CNC all-aluminum case with the structural rigidity of stainless steel gears, it delivers a powerful torque of 23kg.cm at 8.4V, making it the top choice for users seeking extreme response speed and reliability.

Technical Specifications
| Item | Details |
|---|---|
| Product Name | XQ-S8020D (8.4V 22kg-cm High Voltage Digital Servo) |
| Size | 20 * 40 * 34 mm |
| Weight | 65g ± 0.2g (2.29oz) excluding accessories |
| Gear Type | Stainless Steel |
| Motor Type | High-quality Coreless Motor |
| Case Material | CNC All Aluminium Case |
| Special Features | Waterproof, Tamper-proof servo wire |
Performance Matrix
The following table illustrates the linear performance scaling of the XQ-S8020D across different voltage inputs:
| Operating Voltage | Speed (sec/60°) | Torque (kg.cm / oz-in) |
|---|---|---|
| 4.8 V | 0.142 | 15 kg.cm (208.3 oz-in) |
| 6.0 V | 0.142 | 17 kg.cm (236.0 oz-in) |
| 7.4 V | 0.124 | 20 kg.cm (278.0 oz-in) |
| 8.4 V | 0.104 | 23 kg.cm (319.5 oz-in) |
Key Technical Advantages
- Industrial Grade Durability
Utilizing a full CNC aluminum alloy housing, the XQ-S8020D not only enhances body strength but also effectively dissipates heat generated during high-load operations. Paired with stainless steel gears, it ensures minimal wear and tear during long-term service. - Exceptional Response Speed
Equipped with a high-quality Coreless motor, the servo’s response time is reduced to just 0.104s at 8.4V, allowing it to capture and execute minute control signals with absolute precision. - Advanced Environmental Protection
With a dedicated waterproof design and tamper-proof wiring, this servo is built to thrive in humid environments or harsh industrial outdoor conditions where standard servos might fail.
Frequently Asked Questions
Stainless steel provides superior impact resistance and fatigue strength under high torque (23kg.cm). It effectively prevents gear stripping or cracking in high-frequency vibration environments, offering a significantly longer lifespan than standard alloy gears.
Yes. The XQ-S8020D natively supports high-voltage input up to 8.4V. This allows users to connect a 2S LiPo battery directly without a voltage regulator, maximizing both speed and torque performance.