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CE Certified A55ZD Deadbolt Lock for Wooden & Steel Doors - China Suppliers & Factory, 45mm/55mm Backset Options
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CE Certified A55ZD Deadbolt Lock for Wooden & Steel Doors - China Suppliers & Factory, 45mm/55mm Backset Options

Introducing our high-quality lock solutions, ideal for wooden and steel single-leaf doors. Our locks are designed to accommodate both rebated and non-rebated doors, making them suitable for external fire and smoke door applications. Engineered to perfection, these locks come prepared for profile cylinders, ensuring enhanced security. Featuring a reliable deadbolt mechanism with a smooth key action and two rotations, our products are a top choice among China suppliers and factories for superior door hardware. Elevate your security with our expertly crafted locks designed for durability and reliability in any environment
  • Model No. A55 ZD
  • Color Black, Satin Chrome,gun Black , Satin brass , Satin Nickle , or custom color(as your color sample)
  • Product Positioning Mid-to-high-end hardware
  • Certification ISO9001/CE
  • Customization OEM & ODM acceptable
  • Strength 20 Years of Manufacturing Experience

Advantage

🔄

200,000 Times Cycling Test

🛡️

96H Salt Spray Test

100% Good Performance

🏅

Patent

Key Specifications

Features For wooden door and flush doors, Ecological Gate, Cupboard, Wardrobe. Easy to install and adjust with 3D adjustable: Vertical ±2.5mm, Horizontal ±2mm, Depth ±1mm
Opening Angle 180°
TECHNICAL DATA
Max. Door Weight (2 hinges) 80 KG
Min. Door Thickness 38 mm
Max. Door Width 900 mm
Cutter Diameter 28 mm
Cutting Length 160 & 116 mm
Cutting Depth 10 & 25.5 mm
Material Zinc Alloy

Technical Profile

In the world of architectural hardware and precision joinery, the hinge is the unsung hero that defines functionality, durability, and aesthetic integrity. The 3D Adjustable Hidden Door Hinge represents a breakthrough in engineering, specifically designed to meet the most demanding requirements of contemporary flush wooden doors. This product combines a revolutionary 180-degree opening angle with an 80kg heavy-duty load capacity, advanced three-dimensional adjustability, and an easy-install design, all constructed from premium zinc alloy.

💪 Engineered for Unmatched Strength: 80kg Heavy-Duty Performance

Engineered to support up to 80 kilograms, this hinge redefines the concept of heavy-duty for residential and commercial applications. The core mechanism utilizes a high-grade zinc alloy arm and housing, chosen for its superior structural integrity, remarkable corrosion resistance, and long-term dimensional stability. Reinforced with hardened steel pivot pins and smooth-operating bearings, it guarantees a consistently silent, fluid, and reliable swing cycle for the lifetime of the installation.

🔓 Maximum Accessibility & Seamless Aesthetics: The 180-Degree Full-Clearance Design

This hinge transforms user interaction with storage spaces through its 180-degree full-opening capability. Doors can swing completely open, resting flush against adjacent surfaces, providing total, unobstructed access to the cabinet or wardrobe interior. Despite this expansive range of motion, the hinge remains entirely concealed (hidden) when the door is closed, preserving the clean, minimalist lines of flush-mounted doors.

🎯 Advanced 3D Adjustability for Flawless Alignment

Achieving a perfectly aligned, professional-grade installation is made effortless with the integrated 3D micro-adjustment system. This feature allows for precise, tool-based fine-tuning in all three spatial planes after the hinge is mounted:

  • Depth Adjustment (In/Out): To set the exact position of the door, ensuring a perfectly flush surface or a desired reveal.
  • Vertical Adjustment (Up/Down): To level the door precisely, creating even horizontal gaps along the top and bottom.
  • Lateral Adjustment (Side-to-Side): To fine-tune the gaps between adjacent doors, ensuring consistent, hairline margins.

Streamlined Simplicity: The Easy-Install Advantage

This hinge system is designed with an easy-install philosophy. It features clear mounting templates, intuitive components, and a straightforward process that simplifies installation for both seasoned professionals and capable DIY enthusiasts. The design minimizes complex steps without sacrificing robust features, allowing for a quicker, more confident setup.

Conclusion

The Superior Choice for Demanding Applications
The 3D Adjustable Hidden Door Hinge is more than a simple fitting; it is a comprehensive performance system. It successfully merges extreme 80kg load-bearing capacity with the ultimate accessibility of a 180-degree opening, the surgical precision of 3D adjustability, and the practicality of easy installation — all housed within a durable zinc alloy body. For those seeking a reliable, high-performance, and aesthetically discreet hinge for heavy wooden flush doors, this product stands as the intelligent and uncompromising choice. It ensures that every door operates with smooth, silent authority and maintains flawless alignment for years to come, fully embodying the union of robust strength and refined modern design.

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Frequently Asked Questions

What is the maximum door weight supported by this 3D adjustable hidden door hinge?
This hinge is engineered to support a maximum door weight of 80 kg when using 2 hinges. It is ideal for solid wood doors, thick panels, and heavy-duty residential or commercial applications.
What types of doors is this concealed hinge compatible with?
This hinge is designed for wooden doors, flush doors, ecological gates, cupboards, and wardrobes. The minimum door thickness required is 38mm and the maximum door width supported is 900mm.
How does the 3D adjustment system work?
The integrated 3D micro-adjustment system allows fine-tuning in three directions after installation: Vertical (±2.5mm) for leveling, Horizontal/Lateral (±2mm) for gap alignment, and Depth (±1mm) for flush surface positioning — all adjustable with standard tools.
What material is the hinge made from and how durable is it?
The hinge is manufactured from high-grade zinc alloy, providing excellent structural integrity, corrosion resistance, and dimensional stability. It has passed a 200,000-times cycling test and a 96-hour salt spray test, ensuring long-term reliability.
Does the hinge remain visible when the door is closed?
No. This is a fully concealed (hidden) hinge. When the door is closed, the hardware is completely hidden, preserving the clean and minimalist aesthetic of flush-mounted doors without any visible hardware interruption.
What is the opening angle of this door hinge?
This hinge offers a full 180-degree opening angle, allowing doors to swing completely open and rest flush against adjacent surfaces. This provides total, unobstructed access to the interior of cabinets or wardrobes, making it ideal for maximizing usability in any space.