MyActuator FL-38-08 Inner Rotor Frameless Motor – 48V, 9000 RPM, 0.32 N·m Peak Torque, Absolute Encoder, High-Efficiency Robotic Motor

Overview

The MyActuator FL-38-08 Inner Rotor Frameless Motor is a compact, high-performance motor engineered for robotics, automation, and precision control applications. Its design integrates a high-resolution absolute encoder, temperature sensing, and advanced thermal management, making it ideal for scenarios that demand accuracy, durability, and efficiency in a small form factor.

With rated speeds up to 9000 RPM, high efficiency, and a lightweight 50 g frame, this motor is particularly well-suited for humanoid robots, robotic arms, exoskeletons, and medical automation systems where smooth motion and precise control are critical.

Key Features

• High Precision Encoder – Integrated absolute encoder delivers precise position feedback with an angular resolution up to 0.01°.

• Segmented Stator Design – Improves slot fill factor, increases torque density, and boosts efficiency above 80%.

• Thermal Management – Built-in temperature sensors for real-time thermal monitoring, preventing overheating during continuous operation.

• One-Piece Epoxy Sealing – Ensures F-grade insulation, water resistance, and effective protection against corrosion, ideal for harsh environments.

• Lightweight and Compact – Weighing only 0.05 kg, optimized for space-constrained robotic designs without sacrificing performance.

• High Dynamic Response – Low inertia and smooth torque ripple support agile and stable motion in demanding applications.

Technical Specifications

Performance Highlights

• Slot Torque & Ripple Control

  • Cogging torque: 9.223 mN·m

  • Drag torque: 10.904 mN·m

  • Optimized electromagnetic design minimizes torque ripple, improving smoothness and precision.

• Efficiency Curve

  • Maintains >80% efficiency across a wide torque range.

  • Outperforms similar-class competitors in both torque output and energy efficiency.

• Dynamic Stability

  • Smooth torque characteristics and fast response make it ideal for applications requiring precise trajectory control or dynamic motion.

Applications

The FL-38-08 is versatile and reliable, suitable for a wide range of advanced robotics and industrial automation scenarios, including:

• Humanoid Robots – Precision joint control with high responsiveness.

• Robotic Arms – Accurate positioning and smooth motion in industrial or medical applications.

• Exoskeleton Systems – Lightweight design and high torque density for wearable robotics.

• Medical and Laboratory Automation – Clean, efficient, and reliable actuation in precision environments.

• Custom Automation Solutions – Ideal for engineers needing compact, high-speed, high-efficiency motor solutions.

Key Advantages

• Compact design with high torque density for space-constrained systems.

• Integrated sensing and thermal management for safer, smarter control.

• High-speed capability (up to 9000 RPM) for dynamic applications.

• Superior efficiency and reduced torque ripple compared to competing motors.

Details

MyActuator FL-38-08 motor: 48V, 9000 RPM, 0.1 N.m torque, absolute encoder. 38mm diameter, 300mm cable, 0.05kg, >80% efficiency, Y-phase, F insulation.

Slot torque measurement for MyActuator FL-38-08 motor includes XY, polar, and FFT plots. Data reveals torque variation, cogging, friction, drag torque. Efficiency diagrams compare performance against competitors under varying loads and speeds.