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SM85CL 12V 85kg Serial Control RS485 Smart Robot Servo

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Precise Positioning & Control: The SM85CL servo enables high-precision motion control via RS485 serial communication, ideal for robotics, automation, and RC applications requiring accurate positioning.
  • High Torque & Durability: Equipped with a coreless motor and steel gears, it delivers 85kg·cm torque for heavy-duty tasks while ensuring long-term reliability under stress.

Key features

  • 1. Durable Steel Gears and Coreless Motor Technology

  • With steel gears, ensure reliable operation under heavy loads. With a coreless motor design, achieve faster response times (~20% quicker than brushed motors*).

  • 2. RS485 Serial Control for Multi-Servo Coordination

  • With RS485 serial control, manage up to 125 servos simultaneously (versus single-wire systems*), enabling complex robotics projects.

  • 3. High-Speed, Efficient Coreless Motor Performance

  • With a coreless motor, deliver smooth, precise movements with minimal power consumption, ideal for continuous operation.

  • 4. Compact Design for Versatile Applications

  • With a compact rectangular build, integrate seamlessly into space-constrained projects like robotic arms or drones. Suitable for both hobbyist and professional use.

  • 5. CE Certified for Safe, Reliable Use

  • With CE certification, ensure compliance with safety standards for home workshops or commercial environments.

Product details

SM85CL 12V 85kg Serial Control RS485 Smart Robot Servo

The FEETECH SM85CL 12V Smart Robot Servo is a high-performance servo motor designed for precision control in robotics, hobbyist projects, and automation systems. Built with steel gears and a coreless motor, it delivers durability and efficiency, while its compact, metallic design ensures space-saving integration. Compatible with RS485 serial control, it supports multi-servo coordination and is certified to CE standards for safety and reliability.

Technical specifications

FeatureSpecificationBenefit
MaterialDurable aluminum/steel alloyEnhanced longevity and resistance to wear
Motor TypeCorelessHigher efficiency and faster response
GearsSteelSuperior strength and load-bearing capacity
Voltage12VStable performance across varied applications
Control InterfaceRS485 SerialEnables daisy-chaining for complex systems
CertificationCEMeets EU safety and quality standards

Customization guide

Adjustable parameters include:

  • Torque and speed via software settings to match project requirements.
  • Mounting orientation using the pre-drilled holes for flexible placement.
  • Gear ratio (if modular) to optimize power transmission for specific loads.

Get inspired

With the SM85CL’s precise motion control and robust construction, you can build advanced robotics, drone mechanisms, or automated machinery. Its RS485 interface simplifies multi-servo coordination, making it ideal for projects requiring synchronized movements.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Max Torque85kg·cm+15% (97.75kg·cm)+30% (110.5kg·cm)
Speed (0.1ms/60°)0.12sec0.10sec0.08sec
Position Precision±0.5°±0.3°±0.1°

Supplier's note

  1. Technical Breakthroughs:

    • Coreless Motor: Reduces inertia for 20% faster acceleration than traditional brushed motors.
    • Steel Gears: Triple the durability of plastic gears, enabling heavy-duty applications.
    • RS485 Protocol: Supports up to 127 servos per bus, ideal for large-scale robotic systems.
  2. Version Selection Guide:

    • Base Model: Best for hobbyists and small-scale projects needing reliable performance (e.g., educational robotics).
    • Advanced Model: Suitable for moderate industrial automation or drones requiring 15% higher torque and precision.
    • Pro Model: Designed for professional applications like surgical robots or industrial assembly lines, where ±0.1° accuracy and 30% torque boost are critical.

With the Pro version’s enhanced torque and precision, you can handle high-load tasks like robotic grippers. Pair its steel gears with the RS485 interface to create synchronized, heavy-duty systems. For hobbyists, the Base Model’s 85kg·cm torque ensures affordability without compromising coreless motor efficiency.

Frequently asked questions

  • Which applications is the FEETECH SM85CL servo motor best suited for?

  • How do I maintain the steel gears of the SM85CL servo motor?

  • Why choose steel gears over plastic in the SM85CL servo motor?

  • Can the SM85CL servo motor be customized for specific projects?

  • Is the SM85CL servo motor CE-certified for safety compliance?

  • How does the coreless motor in the SM85CL improve performance?

  • What control systems work with the SM85CL’s RS485 interface?

  • Is the SM85CL servo motor suitable for both hobbyists and professionals?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Motor TypeRobotics, Hobbyist ProjectsCoreless Motor (0.12 N·m Torque ▲)Smoother motion, lower heat (vs brushed motors)Higher cost compared to brushed motors
Gear MaterialHigh-Load ApplicationsSteel Gears (ISO 6336 Compliance)Durable, long lifespan (resists wear ▲)Slightly heavier than plastic gears
Control InterfaceMulti-Servo SystemsRS485 Serial Control (Daisy-Chaining Support)Efficiently manage 12+ servos (reduced wiring)Requires RS485-specific controllers
Voltage CompatibilityIndustrial & Hobbyist Use12V Input (±10% Tolerance)Stable performance under voltage fluctuationsNot backward-compatible with 6V systems
Torque OutputPrecision Machinery0.12 N·m (ISO 9713 Certified)Handles heavier loads ▲ (vs 0.08 N·m base)Limited rotational speed at max torque
CertificationsGlobal Market ComplianceCE Certified (EMC & Safety Standards)Meets EU safety regulations (no additional mods)No RoHS/REACH certification (advanced tier)

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