KCH 4055 Concealed Hinge by NHN
Premium Adjustable Concealed Hinges for Modern Doors
NHN, as a Japanese brand, is one of the leading manufacturers of high‑quality architectural hardware, renowned for its world‑class standards, introduces the KCH Series, a premium range of 3D adjustable concealed hinges designed to meet the highest standards of modern architecture.
This series combines minimalist aesthetics, precision engineering, and long-term durability, making it an ideal solution for high-end residential and commercial projects.
What Is the KCH Series?
The KCH Series consists of fully concealed door hinges that are installed inside the door leaf and frame, remaining completely invisible when the door is closed.
This hidden design enhances the visual appeal of doors while maintaining excellent mechanical performance.
✔ Suitable for wooden, steel, and aluminum doors
✔ Ideal for residential and commercial applications
✔ A modern alternative to traditional hinges
Key Features of KCH Series Hinges
Fully Concealed, Minimalist Design
KCH hinges are completely hidden within the door and frame, providing a clean, seamless appearance that perfectly suits contemporary architectural designs.
3D Adjustability for Precise Alignment
The hinges offer three-directional adjustment, allowing fine tuning even after installation:
- Vertical adjustment
- Horizontal adjustment
- Depth adjustment
This ensures perfect door alignment and smooth operation over time.
Wide Opening Angle (Up to 180°)
With an opening angle of up to 180 degrees, KCH hinges allow maximum accessibility and convenience, especially in high-traffic commercial spaces.
Non-Handed Design
The hinge is non-handed, meaning it can be used for both left-handed and right-handed doors, simplifying inventory management and installation.
High Durability and International Standards
- Tested for up to 200,000 opening and closing cycles
- resistance to corrosion and have been tested for minimum 48 hours.
- Compliant with EN 1935 and EN 1670 European standards
Technical Specifications and Load Capacity KCH 4055
- Maximum door weight: 55 kg
- Maximum door width: 1000 mm
- 3D adjustment: Vertical ±2 mm / Horizontal -2 +3 mm / Depth ±1 mm
Note:
- For detailed guidance on the number of hinges needed, please refer to the selection chart in the catalogue.
- For indoor use only. not suitable for areas where it can be in direct contact with water.
- If a door closer is to be installed on the door, please consult the manufacturer in advance to ensure correct use.
- Door deformation can lead to improper closing or failure to close.
- Need to check the screws at regular time to make sure It Is fixed.
Why Choose KCH Series by NHN?
✔ Elegant and fully concealed appearance
✔ High-precision 3D adjustment
✔ Japanese engineering and manufacturing quality
✔ Long service life with stable performance
✔ Ideal for luxury, commercial, and modern architectural projects
Typical Applications
- Interior and exterior doors
- Luxury residential villas and apartments
- Office buildings and corporate spaces
- Hotels, retail stores, and commercial facilities
Conclusion
If you are looking for a high-quality concealed hinge that delivers modern aesthetics, precise adjustability, and exceptional durability, the KCH Series by NHN is a reliable and professional choice.
Its advanced design and compliance with international standards make it suitable for demanding architectural and commercial environments.
