EN1935 Zinc Alloy Golden Painted 3D Adjusting Fire Rated Concealed Door Hinge-DDCH008-G40

3D Adjustable Concealed Door Hinge is a high-end door hardware that achieves precise positioning through a 3D adjustment mechanism. Its core function is to provide rotational movement of the door leaf while allowing for fine adjustments in three directions: vertical, horizontal, and depth, thereby accurately correcting the installation position of the door body. This hinge achieves millimeter level adjustment accuracy through a special screw mechanism and sliding components, and all adjustment operations can be performed after installation without disassembling the door body. Its hidden design makes the hinges completely invisible when the door is closed, maintaining the neat and beautiful surface of the door leaf. This product must comply with the mechanical performance requirements of EN1935 standard for hinges, and special fixtures must be used to ensure slot accuracy during installation. For further information, please contact us.

Product Overview

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Product Applications

1. Star-rated Hotel Suites

Premium hotels demand exceptional sound insulation and aesthetic appeal from their doors. This 3D adjustable concealed door hinge maintains a clean, uninterrupted door surface through its hidden design, while its precision adjustment function swiftly corrects installation deviations. The champagne gold finish complements luxurious interiors, and 200,000-cycle durability testing ensures long-term, maintenance-free operation.

2. Medical Cleanrooms

Medical environments demand stringent door sealing and reliability. This product delivers 132 minutes of fire resistance, with multi-layer electroplating resisting disinfectant corrosion. Precise three-dimensional adjustment ensures airtight door-to-frame alignment, effectively maintaining internal pressure differentials. The concealed design eliminates hygiene dead zones, complying with cleanroom specifications.

3. Premium Office Buildings

Office spaces demand a professional, tidy appearance. This fully concealed 3D adjustable door hinge elevates spatial quality, with exceptional load-bearing capacity accommodating various solid wood and glass doors. Three-dimensional adjustment compensates for structural deformation, maintaining consistent door leaf flatness.

4. Educational Institutions

School doors endure high usage and significant impact. This product's 200,000-cycle durability testing far exceeds standard hinges, with zinc alloy hinge bodies achieving 30J impact resistance. Fire-rated performance complies with educational safety standards, while the gold finish offers scratch resistance and easy cleaning.

5. Commercial Centres

Public spaces like shopping centres demand highly reliable hardware. This 3D adjustable concealed door hinge meets fire resistance and durability requirements for public buildings. Its three-dimensional adjustment swiftly corrects door displacement caused by foot traffic impact, significantly reducing maintenance costs.

Maintenance and Care

1. Regular Inspection Protocol

Conduct a comprehensive inspection every six months. Use a torque wrench to check all fastening screws, ensuring torque specifications are met. Simultaneously verify the flexibility and effectiveness of the adjustment mechanism.

2. Cleaning and Maintenance Protocol

Monthly: Wipe surfaces with a soft cloth to remove dust and stains.

Quarterly: Lubricate adjustment mechanisms with silicone-based lubricant to ensure smooth operation.

Strictly avoid corrosive cleaners to prevent damage to surface coatings.

Thoroughly dry surfaces after cleaning.

3. Adjustment Mechanism Maintenance

Periodically inspect the flexibility of adjustment screws. Should adjustment prove difficult, employ a specialised cleaner to remove accumulated dust from threaded sections. Following cleaning, apply a small quantity of lubricating oil to maintain adjustment precision. Take care to prevent dust ingress into the adjustment mechanism.

4. Fire Protection System Maintenance

Annually inspect the integrity of fire-resistant sealing strips. Replace any aged or damaged strips promptly. Ensure fire-resistant sealing material within hinge cup grooves remains intact to preserve system integrity. Verify all fire-rated components are in proper working order.

5. Usage Precautions

Avoid subjecting door leaves to severe impact to prevent damage to internal hinge components. Ensure door leaf weight does not exceed the rated load capacity. Should abnormal noises or operational difficulties occur, cease use immediately and contact a qualified technician for inspection.

Installation Key Points

1. Precision Slot Cutting Requirements

Employ dedicated templates for positioning; CNC slot cutting equipment is recommended. Thoroughly remove all debris after slotting to ensure a clean installation surface.

2. Precise Positioning Installation

First install the hinge cups on the door frame, using a laser level to ensure all three hinge cups align in a straight line. Then install the hinge cups on the door leaf, followed by fitting the hinge arms and provisionally securing all screws.

3. Three-Dimensional Fine Adjustment

Adjust in the sequence: depth first, then vertical alignment, followed by horizontal alignment. Depth adjustment ensures the door surface is flush; vertical adjustment corrects sagging; horizontal adjustment guarantees uniform door gaps. Conduct multiple opening and closing tests after each adjustment to verify stability.

4. Fire-Rated Sealing Treatment

All hinge cup grooves must be filled with sufficient fire-rated sealant, achieving over 95% of the groove volume. Upon installation completion, apply fire-rated sealant around the hinge periphery to ensure continuity and integrity of the fire protection system.

5. Final Acceptance Criteria

Door leaf opening force shall be within 12-20N. Closing action must be smooth without impact. Gap uniformity tolerance shall be less than 0.3mm. After 15 consecutive opening/closing cycles, the door leaf shall remain stable at any open angle. All adjustment mechanisms must operate freely with no loose fasteners.

D&D Hardware specialized in Stainless Steel hardware products for Wooden Doors& Metal Doors, such as Door Locks, Door Hinge, Lever Handles, Door Closer, Panic Exit Device, Door stopper, Flush Bolt, etc.

The Stainless Steel Euro Door Hinge that we offer are tested to the most stringent international industry standards, including BS EN, CE, UL, ANSI and BHMA, Suitable for Education, Healthcare, Hospitality, Residential and Commercial applications.

More door hardware items include:

1.Door Hinge- UL 10C R38013 & BHMA/ANSI Grade1/2 & CE EN1935 Grade 13

2.Concealed Hinge- BS EN1935, EN1634 Fire Rated

3.Door Lock - CE EN12209 UKCA Fire Rated & UL 10C R40901

4. Door Handle- BS EN 1906 Grade 4, EN1634 Fire Rated

5. Panic Exit Device- UL 10C R40486 & UL305 SA45817 & CE EN1125

6. Door Closer – CE BS EN 1154 & UL 10C R40717

7. Lock Cylinder-BS EN1303, EN1634 Fire Rated

8. Door Viewer - UL Listed UL 10C Fire Rated R41286

9. Glass Hardware / Bathroom Hardware / Barn Door Hardware