Strongest human exoskeleton

The most powerful exoskeleton is the Guardian XO, a robotic full-body suit manufactured by Sarcos Robotics (USA). The system allows its operator to lift objects weighing up to 90 kg (200 lb), with the operator bearing only around 5% of that load. Sarcos has been working on wearable robotics since around 2000, and unveiled the prototype of the Guardian XO in April 2019. The first production models reportedly began trials with customers in 2020.

The Guardian XO suit is designed to handle objects weighing between 25 and 90 kg – things that are too heavy for a single human to comfortably lift on a regular basis, but often too small for mechanical equipment like hoists and forklifts to be practical options.

It is effectively a wearable humanoid robot, with two arms, two legs and a torso. The mass of the suit, and most of the mass of any object being carried, is borne by the suit itself, transferring the weight through the legs to the ground. Control is handled by a forcefeedback system that senses the movements of the operator, and instantaneously moves the robotic limbs to follow.

The range of movement in each joint is matched to that of a human, so it can't injure its operator through overextension, and the equipment is speed-limited to reduce the risk of injury to those around it.