Extended Length Four Link Hinge
,18 Inch 304 Four Link Hinge
,Sliding Door Four Link Hinge
This extended-length load-bearing hinge is specifically engineered for extra-large, heavy-duty casement windows. Precision-stamped from 3.0mm-thick 304 stainless steel, the 18-inch arm features 22-slot compatibility with standard door and window profiles. The four-link linkage structure delivers robust load-bearing capacity, wide opening range, and exceptional corrosion resistance, making it the ideal core hardware component for oversized thermal break aluminum floor-to-ceiling windows and heavy-duty outward-opening windows.
Manufactured from a single piece of SUS304 stainless steel sheet with 3.0mm thickness, this hinge provides exceptional structural rigidity and load-bearing capacity. It maintains resistance to bending and deformation under heavy window sash weights and strong wind loads, delivering superior wind and pressure resistance performance.
- 304 stainless steel offers excellent corrosion and rust resistance
- Verified through 500-hour salt spray testing for harsh environments
- Precision-riveted hinge points with solid rivets for tight fit and smooth operation
- Complies with QB/T 5338-2018 General Technical Standard for Door and Window Hardware
- Passed 100,000-cycle durability testing for repeated opening and closing
The 18-inch (approximately 457mm) extra-long arm design combined with a four-bar linkage transmission mechanism enables wide maximum opening angles for superior ventilation. The opening and closing process distributes force evenly, ensuring smooth and stable operation without jamming, wobbling, or shaking.
- Stable triangular mechanical support when open
- Firmly locks sash at desired opening angle
- Withstands strong wind impacts and prevents sash swaying
- Wear-resistant guide and stop components for uniform sliding resistance
- Reliable end stops enhance smoothness for extra-large window sashes
| Arm Length | 18 inches (approx. 457 mm) |
| Slot Compatibility | 22-slot standard door and window profiles |
| Material Thickness | 3.0 mm |
| Base Material | SUS304 Stainless Steel |
| Mechanism Type | Four-Link Linkage Structure |
| Standards Compliance | QB/T 5338-2018 |
| Durability Testing | 100,000 cycles |
Compatible with 22mm-wide standard door and window profile grooves, this universal specification fits oversized thermal-break aluminum casement windows, heavy-duty exterior casement windows, and top-hung windows. Industry-standard mounting holes allow for precise alignment and quick assembly using standard screws, eliminating the need for additional profile cutting or grooving.
- Oversized outward-opening windows
- Heavy-duty thermal-break aluminum floor-to-ceiling windows
- Large-format balcony casement windows
- Heavy-duty top-hung windows for sunrooms
- Residential large-window hardware systems
- High-end finishing projects in real estate developments
- Load-bearing performance upgrades for older windows and doors
- Bulk export supply of window and door hardware
