5-inch automatic door hinge

With an innovative split design, it reduces component wear and boosts durability vs traditional integrated hydraulic hinges. The core series delivers 500,000 opening-closing cycles, far exceeding industry norms. Adopts an oil-free power chamber configuration that eradicates the hazard of oil seepage—a long-standing drawback plaguing conventional hinges. Additionally, its springs and dampers are detachable and replaceable, substantially cutting down post-sales maintenance expenses for users. Boasts a 4-in-1 integrated design (hinge, door closer, door stop, and positioner), obviating the requirement for extra independent components and streamlining both installation and usage processes. Offers flexible angle customization: it accommodates a maximum opening angle of 175°, enables free positioning between 85° and 130°, and allows for effortless switching between two-stage force settings. Moreover, it maintains reliable performance within a temperature range of -37℃ to 60℃, making it adaptable to diverse climatic conditions. Features user-centric installation: most models offer left-right universal compatibility, while select series incorporate a nail-pull non-adjustment design to boost operational efficiency. Complementing its functionality are four elegant color variants (Luxury Gold, Shining Silver, Moonlight Black, Phantom Gray), designed to harmonize with various decoration styles. Backed by exclusive patents and cutting-edge 18.5mm small shaft diameter technology, the product ensures high technical value and strong market competitiveness, standing out as a leading solution in the architectural hardware sector.