automatic closing hinge

5-inch F-type Damping Hinge 1.Ultra-thin Shaft Diameter & Advanced Technology**: Featuring an 18.5mm shaft diameter, this split-type damping hinge represents the pinnacle of engineering. A smaller shaft diameter means higher technical含量 (content), as it requires precise craftsmanship to ensure stable damping performance, smooth rotation, and long-lasting durability. It’s a testament to how miniaturization can coexist with superior functionality. 2.Intelligent Damping & Multi-zone Control**: The hinge is designed with multi-stage motion control. It has a **130° door suction zone** for secure positioning, an **85° arbitrary stay zone** that allows the door to halt at any angle within this range for convenience, a **windproof buffer zone** that reduces impact from airflow, and a **20° locking zone** for seamless latching. Plus, it offers collision-proof automatic rebound, preventing damage from accidental impacts and ensuring the door always returns to its proper position smoothly. 3.Robust Construction & Wide Compatibility**: Built with high-quality materials, the 5-inch F-type hinge boasts excellent load-bearing capacity and corrosion resistance, suitable for various door types in residential and commercial spaces. Its sleek black finish and F-type design not only enhance the aesthetic appeal of doors but also ensure easy installation, making it a versatile choice for different architectural styles. 4.Quiet Operation & User Comfort**: The damping mechanism eliminates noisy slams, providing a quiet living and working environment. Whether you’re closing the door gently or with a bit more force, the hinge’s consistent damping effect ensures a smooth, silent motion, enhancing user experience and adding a touch of luxury to everyday interactions with doors. 5.Innovative Split Design & Longevity**: The split-type structure allows for easier maintenance and replacement if needed, while also distributing stress more evenly, thus extending the hinge’s service life. This design innovation ensures that the hinge remains a reliable component of your door system for years, combining practicality with cutting-edge engineering.