Micro Linear Actuators

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Micro Linear Actuators: The Artificial Muscles for Humanoid Robotics, FIRGELLI's Micro Pen Actuator In the race to build functional, scalable humanoid robots, the challenge isn't just AI—it's Physical Intelligence . How do you fit 27 degrees of freedom into a human-sized envelope? How do you engineer a hand that grips an egg delicately but lifts a power tool securely? The answer lies in moving beyond bulky rotary servos and embracing direct, bio-mimetic linear motion. FIRGELLI Micro Linear Actuators are designed to solve the "packing problem" in advanced robotics. With diameters as small as 16mm (0.63”) , our actuators function as synt hetic tendons, allowing you to stack motion systems inside finger phalanges, forearms, and tight chassis envelopes where traditional motors simply won’t fit. Replacing an existing actuator? Use the linear actuator replacement guide to compare published force, stroke, voltage, speed, feedback, and IP-rating data before choosing a FIRGELLI option. Why Robotics Engineers Choose FIRGELLI Micro Actuators: The "Finger-Size" Form Factor: Our Micro Pen Actuator features a streamlined aluminum T6063 body that mimics the metacarpal structure. You can mount them side-by-side to drive individual fingers or complex end-effectors without creating a bulky "Popeye forearm" effect. Closed-Loop Precision: Autonomous operation requires knowing exactly where your joint is. Our actuators feature built-in Dual Hall Effect Sensors (90° phase shift), delivering up to 45 pulses per mm (1143 pulses/inch) of positional resolution. This enables the fine control necessary for soft-touch gripping and precise gesture repeatability (0.1mm). Force Density, Not Hype: We offer three distinct gearing options to match your specific joint requirements: High Speed (20N / 4.5lbs): For rapid finger flexion and blinking mechanisms. Balanced (50N / 11lbs): For wrist articulation and utility motion. High F orce (100N / 22lbs): For locking mechanisms and heavy grip applications.