LG Electronics has initiated a technical collaboration with SPG, a Korean specialist in precision reducers, to accelerate the development of its own robot actuators.
This move is a direct response to the ambitious timeline LG set for itself. At CES 2026, the company officially launched its actuator brand, 'AXIUM', signaling its intent to treat these components as a core platform business. This was followed by a public pledge from CEO Lyu Jae-cheol to establish a mass-production system "within this year." The partnership with SPG is the crucial next step to turn these public declarations into a manufacturing reality.
The strategic importance of this collaboration becomes clear when looking at the economics of robotics. Actuator systems—the 'muscles' that enable a robot's movement—account for a substantial portion of a humanoid robot's hardware cost, estimated to be between one-third and one-half. Within the actuator, the 'reducer' (or gearbox) is the most complex and expensive precision element. By partnering with SPG, a company with expertise in all major reducer types, LG is directly addressing the biggest technical and cost bottleneck, aiming to control its own destiny in the robotics supply chain.
This internal push is matched by a strong external pull from the domestic market. Hyundai's recent announcement to scale up humanoid robot production for its factories has created a massive potential demand right at LG's doorstep. This creates a powerful incentive for LG to build a reliable, local supply chain with a partner like SPG, rather than depending on longer and riskier import channels.
This partnership didn't happen overnight. It builds upon a foundation laid in November 2025, when SPG signed a memorandum of understanding (MOU) with LG Science Park. That initial agreement formalized the relationship and set the stage for this deeper technical cooperation, demonstrating a long-term strategic alignment between the two companies.
In essence, the LG-SPG tie-up is the practical supply-chain move that validates LG's 'physical AI' ambitions. It significantly increases the likelihood that LG will meet its 2026 pilot production targets for AXIUM and positions the company to become a formidable B2B supplier in a market where joints are the center of gravity.
- Actuator: A component of a machine that is responsible for moving and controlling a mechanism or system. In robots, they function like muscles, converting energy into motion.
- Reducer: Also known as a speed reducer or gearbox, it's a critical component within an actuator that reduces the speed of a motor while increasing its torque (rotational force).
- Physical AI: Artificial intelligence that is embodied in a physical form, such as a robot, and can interact with and manipulate the real world.