3D Adjustable Door Hinge - Invisible Concealed Hinge (DDCH008)
Product Overview
D&D HARDWARE’s 3D Adjustable Door Hinge (Model: DDCH008) redefines door hardware with precision multi-axis adjustability and fully concealed installation, ideal for hotels, villas, office buildings, and educational facilities. As premium concealed hinges, these invisible door hinges eliminate visible hardware while enabling tool-free adjustments in three axes (up/down, left/right, in/out)—ensuring perfect door alignment, smooth 180° operation, and long-term durability. Crafted with a zinc alloy body and stainless steel cover, they blend sleek aesthetics with robust performance, seamlessly integrating with D&D’s door locks, door closers, and door handles for cohesive, high-end door systems.
3d Adjustable Door Hinge - Technical Specifications
- Model Number: DDCH008
- Brand: D&D HARDWARE
- Material: Zinc Alloy Body + Stainless Steel Cover (SUS304; optional SUS316 for enhanced corrosion resistance)
- Size: 25×150mm
- Min. Door Thickness: 35mm
- Max. Door Weight: 40kg
- Max. Open Angle: 180 Degrees
- Finish Options: SSS (Satin Stainless Steel), PSS (Polished Stainless Steel), PB (Polished Brass), PVD (Matte Black/Bronze), AB (Antique Brass), AC (Antique Copper)
- Adjustment Range: Side (±3mm), Height (±2mm), Depth (±1mm)
- Warranty: 5 Years Mechanical Warranty
- Application Scenarios: Hotel, Villa, Apartment, Office Building, Hospital, School, Mall, etc.
3d Adjustable Door Hinge - Product Images and Videos
3d Adjustable Door Hinge - Product Features & Advantages
- 3D Tool-Free Adjustment: Perfect Alignment Every Time: Enables precise adjustments in three axes—side (±3mm), height (±2mm), depth (±1mm)—using a 4mm Allen key. This eliminates the need for reworking door frames or mortises, saving contractors hours of labor during installation or maintenance. Critical for renovations (where old frames are misaligned) and commercial projects (where consistency across multiple doors is essential).
- Fully Concealed Design: Sleek Aesthetics: The hinge remains entirely hidden within the door and frame when closed, creating a "hardware-free" look that complements modern, contemporary, and European design styles. Unlike traditional butt hinges, it preserves clean lines and uncluttered surfaces—ideal for hotels, villas, and high-end offices.
- Zinc Alloy Body + Stainless Steel Cover: Durability & Corrosion Resistance: The zinc alloy body provides robust load-bearing (supports up to 40kg), while the SUS304 stainless steel cover resists rust and wear—making it suitable for bathrooms (humid environments) and outdoor entries. Optional SUS316 upgrades extend lifespan in coastal or chemical-intensive areas (e.g., malls with frequent cleaning).
- 180° Max Opening Angle: Unrestricted Access: Supports full 180° door swing, allowing doors to open flat against walls—maximizing space in compact areas like home offices, kitchens, and bedrooms. This functionality matches traditional hinges while maintaining a concealed profile.
- Uniform Force Distribution: Extended Service Life: The hinge’s internal mechanism ensures uniform force on the hinge arm, reducing stress and wear. This design increases service life by 30% compared to hinges with uneven load distribution, ideal for high-traffic spaces like schools, hospitals, and malls.
- Seamless Integration with Door Systems: Works harmoniously with D&D’s door locks (including smart locks), door closers, and door handles (matching finishes like PVD black or SSS). The standard mounting pattern aligns with industry norms, enabling easy retrofits or new installations.
3d Adjustable Door Hinge - Installation & 3D Adjustment Steps
- Pre-Installation Preparation: - Verify door thickness (≥35mm) and weight (≤40kg); select a finish matching D&D’s door handle (e.g., PVD black for industrial offices, AB for traditional villas). - Gather tools: 4mm Allen key, drill (3mm bit), torque wrench, level, pencil, and chisel.
- Mark & Create Mortises: - Use the hinge template (included) to mark mortise outlines on the door edge and frame. - Chisel mortises to fit the hinge body, ensuring a flush, concealed fit when closed.
- Secure Hinges & Initial Alignment: - Attach the door-mounted and frame-mounted hinge components with screws, tightening to 12–15 ft-lbs torque. - Hang the door and check initial alignment (gaps, swing smoothness).
- 3D Adjustment (With 4mm Allen Key): - Side Adjustment (Horizontal): Turn the side adjustment screw clockwise to increase the gap (max +3mm) or counterclockwise to decrease (max -3mm) on the locking side. - Height Adjustment (Vertical): Slightly loosen clamping screws, then turn the lower height screw clockwise to raise the door or counterclockwise to lower it (max ±2mm). Retighten clamping screws after adjustment. - Depth Adjustment (In/Out): Loosen fixing screws, align the door to desired compression, then retighten clamping screws (max ±1mm).
- Test Operation & Finalize: - Open/close the door to 180° to verify smooth, silent movement and concealed fit. - Install D&D’s door lockset and handle; add a magnetic door stop to prevent wall damage when fully open.
3d Adjustable Door Hinge - Application Scenarios
The DDCH008 3D Adjustable Door Hinge excels in environments demanding precision alignment, sleek design, and durable performance:
- Hospitality (Hotels, Resorts): - Use Case: Guest room entry doors, suite bathrooms, and dining area partitions. - Value: 3D adjustment ensures uniform gaps across dozens of doors; concealed design enhances luxury aesthetics; durable construction withstands high traffic.
- Residential (Villas, Apartments): - Use Case: Living room sliding doors, home office entry doors, and kitchen pantry doors. - Value: 180° opening maximizes small-space utility; 3D adjustment fixes uneven old frames; finish options match cabinet handles for cohesive decor.
- Commercial (Offices, Malls): - Use Case: Meeting room doors, retail fitting rooms, and mall storefronts. - Value: Precise alignment maintains professional aesthetics; corrosion-resistant stainless steel handles cleaning chemicals; compatible with panic hardware for emergency egress.
- Institutional (Hospitals, Schools): - Use Case: Patient room doors, classroom doors, and staff bathrooms. - Value: Easy 3D adjustment accommodates settling buildings; stainless steel meets hygiene standards; silent operation supports calm environments.
Value for Buyers: - Interior Designers: Achieve seamless, hardware-free aesthetics; 3D adjustment enables perfect alignment with door hardware palettes. - Contractors: Save time with tool-free adjustments; reduce callbacks with 5-year warranty; universal fit simplifies inventory. - Facility Managers: Low-maintenance design cuts long-term costs; corrosion resistance suits diverse environments; easy adjustments fix wear over time. - Homeowners: Enjoy perfectly aligned, silent doors; durable construction avoids frequent replacements; complements modern decor.
Certifications and Compliance
- International Certifications: CE (EN 1935 for architectural hardware), UL (ANSI/BHMA A156.13 for hinge performance), and ISO 9001 (quality management system)—critical for global project compliance (e.g., hotel chains, international office builds).
- Material & Performance Standards: - Zinc alloy body complies with ASTM B86 for load-bearing strength (tested to 40kg static load for 72 hours). - SUS304 stainless steel cover meets ASTM A240 for corrosion resistance (72-hour salt spray test, no rust). - Adjustment mechanism: 500,000+ cycles of 3D adjustment and 180° opening without failure.
- ISO 9001 Quality Management: Manufactured under ISO 9001:2015-certified processes, with 100% dimensional and functional testing for each batch—ensuring every hinge meets precision standards.
- SGS Factory Audited: Produced in an SGS-verified facility (200,000 units/month capacity) with traceable material sourcing and ethical manufacturing—meeting global supply chain transparency requirements.
3d Adjustable Door Hinge - Customization Options
D&D offers tailored solutions for DDCH008 to meet project-specific needs:
- Material Upgrades: SUS316 stainless steel cover (for coastal villas、marine hotels); anti-microbial zinc alloy body (for hospitals、schools to inhibit bacterial growth). MOQ: 500 units.
- Finish Customization: Match RAL/Pantone colors (e.g., brand-specific hues for mall chains); custom patinas (aged bronze for heritage villas); matte white for minimalist home offices. MOQ: 300 units.
- Load Capacity Enhancement: Reinforced design for 60kg doors (for heavy wooden entry doors in villas). Includes thicker zinc alloy components and upgraded stainless steel covers. MOQ: 1000 units.
- Adjustment Range Expansion: Increased side (±5mm), height (±3mm), depth (±2mm) adjustment for doors with significant alignment issues (common in older apartment buildings). MOQ: 1000 units.
- OEM/ODM Services: Private-label hinges with customer logos; custom installation templates (multilingual for global contractors); serialized batches (for traceability in hospital or government projects). Offer hardware bundles (hinges + door handles + smart locks).
3d Adjustable Door Hinge - Production Process & Quality Control
D&D’s production ensures precision and reliability for 3D adjustable hinges:
- Material Sourcing & Testing: Select zinc alloy ingots (ASTM B86-compliant) and SUS304/SUS316 stainless steel sheets from SGS-verified suppliers; test via XRF to confirm material composition.
- Zinc Alloy Die Casting & Machining: Zinc alloy bodies are die-cast with precision molds (tolerance ±0.05mm), then CNC-machined to create adjustment screw threads and hinge knuckles.
- Stainless Steel Cover Forming & Polishing: Stainless steel sheets are laser-cut, bent into shape, and polished to 320-grit (SSS) or 1200-grit (PSS) for a uniform finish.
- Assembly & Adjustment Calibration: Hinge bodies and covers are assembled; adjustment mechanisms are calibrated to ensure smooth, tool-free 3D movement. Each hinge undergoes manual adjustment testing.
- Surface Finishing: - SSS/PSS: Passivation to enhance corrosion resistance. - PVD/AB/AC: Vacuum PVD coating (2–3μm thickness) or chemical patination; finish adhesion tested via tape pull (no peeling allowed).
- Final Quality Testing (100% Batch Inspection): - Functional: 3D adjustment range test, 180° opening/closing test, and load-bearing test (40kg static load). - Durability: 500,000-cycle adjustment and opening test. - Aesthetic: Finish uniformity check and concealed fit inspection when door is closed.
- Packaging: Qualified hinges are packed in anti-scratch PE bags (inside color/white boxes) with 4mm Allen keys, installation templates, and compliance certificates. Bulk orders include moisture-absorbing desiccants for ocean shipping to global hotels、offices、and villas.
