🚀 Frameless Torque Motors: The New Face of Compact Motion!

[Ahmet Ö.]

✨ Next-Generation Frameless Motors from Allient​

Allient Inc. has launched 25mm and 38mm frameless torque motors, set to revolutionize fields such as compact robotics, precision instruments, and optical systems. These new models offer ideal solutions for applications requiring high performance in confined spaces.

⚙️ The Power of Integrated Design​

Unlike traditional motors, frameless motors allow for the separate integration of the stator and rotor. This enables machine designers to save space and create more compact systems by directly incorporating the motor into the mechanical structure. Especially for robotic joints and precision motion systems, this architecture allows components like the motor, bearings, and shaft to be designed as a single actuator.

🔌 PCB Termination and Flexible Integration​

The new 25mm and 38mm motors utilize PCB termination on the stator. This innovation reduces the space occupied by traditional cable connections and simplifies electrical integration. Furthermore, separating the motor's electromagnetic components from the mechanical body offers designers the flexibility to customize other components such as bearings, shaft arrangements, and feedback systems according to application requirements.

🎯 Application Areas and Performance​

These small-sized motors are specifically designed for compact robotics and precision motion systems. They are perfect for applications requiring direct motor integration in areas such as robotic joints, optical positioning mechanisms, and precision instruments. Allient states that the ElectroFlux Series leverages smart automation processes to achieve high torque density targets. However, the torque, speed, winding, and thermal values of the new motors have not yet been disclosed.

💡 Why Frameless Motors?​

Frameless torque motors are increasingly preferred in robotics because the absence of a traditional motor housing, shaft, and bearings allows these components to be integrated into the robot's own mechanical structure. This means greater freedom in actuator packaging and fewer separate transmission components.

📊 Competition and Comparison​

Companies like Kollmorgen and DINGS Motion also offer frameless motors on the market. DINGS Motion's 25mm and 38mm frameless brushless motors have peak torque values of 0.105 Nm and 0.76 Nm, respectively. Kinco Robotics stands out with models offering peak torque values of 0.222 Nm and 1.05 Nm. However, since detailed technical specifications for Allient's new ElectroFlux series have not yet been released, more information is needed to make a direct performance comparison.

🔍 Selection Criteria​

When selecting motors for compact robotic applications, factors such as outer diameter, axial length, continuous and peak torque, operating speed, winding temperature, voltage, current, rotor inertia, thermal resistance, feedback compatibility, and mechanical integration requirements should be considered.