Joint is a broad category in the industrial supply chain, encompassing mechanical components that connect, transmit motion, or provide flexibility in machinery and automation systems. Key products in this classification include bearings (ball, roller, or sleeve), couplings (rigid, flexible, or fluid), linear guides, universal joints, and articulated arms. These components are essential for reducing friction, accommodating misalignment, and enabling precise movement in automated equipment. High-performance variants often feature corrosion-resistant materials, sealed designs for harsh environments, or specialized coatings to withstand extreme loads. The joint category serves critical functions in robotics, conveyor systems, CNC machinery, and other motion-control applications where reliability and precision are paramount.