Product Description
Industrial-grade bus servo motors, available in UART and RS485 dual-protocol versions, integrate high torque and intelligent control in a compact structure, providing core power for robots and automation equipment.

Product parameters
Model | Model: RX18-U100H-M | Model: RX18-R100H-M |
Product Name | Bus Servo - Industrial-Grade 100kg Series | 485 Bus Servo - Industrial-Grade 100KG Series |
Operating Voltage | 9.0-12.6V | |
Motor Type | Brushless Motor | |
Stall Torque | 100kg-cm (9.80N·m) | |
No-Load Speed | 43.0rpm (0.250sec@60°) | |
Operating Mode | Single-Turn Angle Mode,Multi-Turn Angle Mode,Wheel Mode,Damping Mode | |
Protection Mode | Voltage Protection,Stall Protection,Power Protection,Temperature Protection | |
Operating Temperature | -10~60°C | |
Stall Current | 13A | |
No-Load Current | 300mA | |
Standby Current | 50mA | |
Position Sensor | 12-bit Contactless Encoder (Magnetic Encoder) | |
Effective Angle | 360° | |
Resolution | 4096 [Steps/360°] | |
Processor | 32-bit MCU | |
Feedback Signal | Voltage | Current | Temperature | Angle | Power | |
Communication Protocol | UART/TTL | RS-485 |
Baud Rate | 9600~1Mbps | |
ID Range | 0~254 | |
Gear Material | All-Metal Stainless Steel | |
Gear Ratio | 392:1 | |
Output Gear | Stainless Steel / 15T | Stainless Steel / Ø9mm / 15T |
Casing Material | All-Aluminum Alloy Body | |
Interface Type | 5264-3Pin | PH2.0 |
Appearance | Dual-Axis | |
Dimensions | 63×34×47mm | |
Weight | 230g | |
*Test Conditions: 12.0V Power Supply, 25°C Ambient Temperature | ||
Dimensional Drawing

Product Display
Control Mode
No ADC conversion required, 4096-step resolution in degrees,
minimum control accuracy 0.19
Control Range | Control Parameters | |
Single-turn angle | ±180° | Angle | Time | Speed | Acceleration | Power |
Multi-turn angle | ±368,640° (±1024 turns) | Angle | Time | Speed | Acceleration | Power |
Damping mode | / | Damping Coefficient |
Data Readback
Supports single and batch data readback and status flags
Readback parameters: angle, voltage, current, power, and temperature.
Status flags: Command execution, stall protection, voltage protection, current protection, power protection, and temperature protection.
Trapezoidal acceleration and deceleration
Supports linear and smooth hyperbolic motion for smoother motion control.
Effectively reduces start-stop shock, extending equipment life.
Any-angle origin setting
Based on a 12-bit magnetic encoder, any position can be set as the mechanical zero point.
Supports online output calibration for easier installation and debugging.
.
Synchronous and asynchronous commands
Supports multi-servo coordination with zero latency, achieving precise synchronization or fast response.
A single command triggers all actions, ensuring high system control efficiency.
Three Stopping Modes
Provides release, hold, and damping stopping modes.
Flexibly adapts to scenarios such as emergency braking, position holding, and manual adjustment.
Intelligent Power Control and Comprehensive Protection
Built-in intelligent power regulation and automatic load reduction ensure safe operation.
Integrated five-layer protection mechanism ensures comprehensive device stability.
Development and Compatibility
Unified hardware platform and standard protocols ensure seamless compatibility between models.
Fully supports multiple platforms (STM32, Raspberry Pi, PLC, ROS, etc.) and mainstream programming languages.
Quality Control
This product undergoes rigorous quality control before leaving the factory. From the meticulous selection of core components to the high-precision manufacturing and assembly of the motor and gear train, every detail is ensured to be tight and reliable. Comprehensive performance testing precisely verifies torque, angular accuracy, and response speed, and verifies stability in harsh environments such as high and low temperatures, humidity, and vibration. All products undergo long-term endurance cycling and numerous electrical tests, including voltage, current, and electromagnetic compatibility tests, ensuring that each servo delivers superior performance and durability, providing you with a reliable and secure motion control experience.
Application Cases
Servo gear is widely used in scenarios such as adjusting the flight attitude of drones, precise movements of PLC industrial automation equipment, flexible joint movements of robots and dexterous hands, high-precision operations of robotic arms, and stable steering of gimbals.
Drones
PLC Industrial Automation
Robots
Dexterous Hands
Robotic Arms
Gimbals










