At ECM, we design motors for the future—compact, efficient, and ready to meet the demands of advanced engineering applications.
Nowhere is that more evident than in our latest release: a high-torque, ultra-compact servo motor powered by ECM’s patented PCB Stator technology and an integrated 50:1 harmonic drive. Nicknamed the “Eight Ball,” this next-generation motor is built for robotics, aerospace, advanced automation, medical devices, and any system where precision motion control meets space constraints.
A Breakthrough in High-Torque Miniaturization
The Eight Ball delivers an impressive 33.9 Nm of peak torque and 18.8 Nm of continuous torque from a frame just 2.95″ x 3.35″ x 1.96″ in size, weighing only 0.57 kg. It’s engineered for peak torque density—and precision control.
Dual encoders enable closed-loop feedback, ensuring smooth, cog-free operation and pinpoint positional accuracy. From surgical robotics to UAVs and factory automation lines, this motor is designed to fit where others can’t.
Compact. Efficient. Application-Ready.
Beyond its size and power, the Eight Ball represents a leap forward in sustainable and efficient motor design:
- Compact and Lightweight: Saves weight and simplifies integration
- Energy Efficient: Lower inertia helps reduce energy draw
- Easy to Integrate: Flexible thru-hole design fits complex assemblies
- Precision Built-In: Dual encoders ensure accurate motion feedback
With reduced raw material usage and fewer mechanical components, it’s a smarter solution for engineers designing next-gen machines under strict spatial and performance constraints.
Real-World Impact: From Robotic Arms to Aerospace Systems
ECM developed the Eight Ball in direct response to industry challenges. Traditional motors either underperform in tight spaces or require trade-offs in torque or control. This servo changes that.
Whether powering compact robotics, enabling finer control in medical devices, or helping aerospace systems shed weight and boost efficiency—the Eight Ball delivers.
A Full Suite of Servo Solutions
The Eight Ball is part of ECM’s expanding servo lineup, which includes 0.5 Nm and 2 Nm servo evaluation motors. Each is optimized using our PrintStator Motor CAD platform—allowing fast prototyping, performance tuning, and deployment.
Want to see it in action? ECM will be showcasing the Eight Ball and our full servo motor lineup at Automate 2025 in Detroit, Booth 6223.
Explore the Eight Ball and our evaluation motor lineup at pcbstator.com
