XQ-S8020TTL Smart Serial Bus Servo: 23kg·cm Coreless High-Voltage Actuator

“Order the XQ-POWER S8020TTL heavy-duty smart serial bus servo. Engineered for robotics, it features 23kg·cm torque, 0.10s high-speed response, absolute magnetic encoder feedback, and IP67 protection, supporting seamless daisy-chain integration via TTL.”

[Download S8020TTL Datasheet (PDF)]

 

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Intelligent Asynchronous Bus Architecture

The XQ-S8020TTL is engineered to streamline complex system integration. Utilizing a high-speed TTL Serial Bus, it enables a single signal line to drive multiple units via daisy-chain connectivity. Each actuator functions as an independent, addressable node with a unique ID, drastically reducing “cable jungle” overhead. This scalable architecture is the premier choice not only for robotic joints but also for autonomous steering in AGVs, precision gimbals for specialized UAVs, synchronized industrial sorting lines, and high-fidelity medical automation systems.

Bi-directional Real-Time Telemetry

Moving beyond traditional “one-way” PWM servos, the S8020TTL serves as an intelligent motion node with full telemetry feedback. It communicates real-time diagnostics back to the main controller, enabling a sophisticated “closed-loop” monitoring ecosystem:

  • Absolute Position (12/32-bit accuracy): High-resolution coordinates for sub-degree accuracy.
  • Dynamic Load & Current: Monitor real-time physical stress to prevent collisions.
  • Internal Thermal Monitoring: Proactive overheating alerts for high-duty cycles.
  • Input Voltage Status: Detect battery or power rail fluctuations instantly. This data stream empowers predictive maintenance and advanced safety logic to ensure maximum system uptime.

Coreless Precision & Industrial Metallurgy

The mechanical heart of the S8020TTL is a premium custom-wound coreless motor. By eliminating the heavy iron rotor core, it achieves near-zero inertia for instantaneous acceleration—essential for high-frequency positioning and ultra-responsive control.

  • Hardened Stainless Steel Gear Train: Engineered to withstand the 23 kg·cm peak stall torque without tooth deformation or physical deflection.
  • Aerospace-grade CNC Aluminum Case: A precision-machined housing that acts as an integrated heat sink, ensuring thermal stability and constant torque output during prolonged industrial cycles.
Stall Torque

23.0 kg.cm / 319.4 oz-in (@8.4V)
20.0 kg.cm / 277.7 oz-in (@7.4V)
17.0 kg.cm / 236.0 oz-in (@6.0V)

No-load Speed

0.10 sec/60° (@8.4V)
0.12 sec/60° (@7.4V)
0.14 sec/60° (@6.0V)

Travel Angle

360° (when1000~2000 µsec) Customization

Voltage Range

6.0 V – 8.4 V (Direct 2S LiPo / High-Voltage Ready)

Dimensions

20.0 * 40.0 * 34.9 mm (Industry Standard Standard Size)

Weight

65g

Stall Current

3.5 A (@8.4V), 3.0 A (@7.4V), 2.8 A (@6.0V)

Case Material

Anodized Full CNC Aerospace Aluminum Housing

Gear

Steel Gear Train

Spline

Standard 25T – φ5.94mm

Motor

Coreless Motor

Bearing

Dual Ball Bearings (2BB)

Position Sensor

Non-Contact Magnetic Encoder (12-Bit, Contactless, Zero Center Drift)

Signal & Protocol

PWM / TTL

Operating Temperature

-15℃ ~ 65℃

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