What Is the Load-Bearing Capacity of 3H Casement Window Hinge Stays?

What Is the Load-Bearing Capacity of 3H Casement Window Hinge Stays?

Hinge stays are critical hardware components in casement window systems. Without hinge support, their primary role is to bear the weight of the window sash, position it securely, and ensure stability during opening/closing—especially in strong winds to prevent detachment. The load-bearing capacity of hinge stays is determined by a formula:  

Required load-bearing capacity ≥ (Weight of sash + Weight of glass) × Safety factor  

3H Building Hardware’s Hinge Stay Performance  

- 3H’s casement window hinge stays achieve a load-bearing capacity of 80 kg, developed through over two years of R&D.  

- The JHKC12B high-load milling-free hinge stay supports up to 50 kg for casement windows.  

Key Performance Requirements  

1. Self-Positioning Force: ≥40N for inward/outward-opening windows.  

2. Opening/Closing Force: ≤40N initially, and ≤80N after 25,000 cycles.  

3. Durability Test: Components must remain intact after enduring 1000N pressure (equivalent to 102 kg) for 5 minutes.

Factors Affecting Load-Bearing Capacity  

1. Material: High-quality aluminum alloy hinge stays offer superior load-bearing and corrosion resistance.  

2. Design: Structural shape and dimensions impact performance.  

3. Manufacturing: Precision engineering and quality control are vital.  

4. Installation: Proper installation ensures optimal functionality.  

Relevant Standards  

- GB/T 8478-2020 (Aluminum Alloy Doors and Windows) and JGJ 214-2010 (Technical Code for Aluminum Alloy Door/Window Engineering) outline requirements for hinge stays, including load-bearing and durability standards.  

In summary, while specific load-bearing values vary based on design and conditions, 3H’s hinge stays meet rigorous benchmarks, combining innovation with reliability for casement window systems.