JBJLA Series Professional Window Corner Hinge System

JBJLA Series Professional Window Corner Hinge System

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Product Description

Packaging & Delivery

Product Description

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Packaging & Delivery

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Product Description

Architectural Hinge Dynamics

JBJLA Series
Corner Hinge
Pivot System

The industrial standard for inward-opening Plastic Steel Door systems. Precision-engineered for heights up to 1600mm.

High-Cycle Durability

JG/T 176-2005 Certified

Structural Axis
Integrity

The JBJLA Series Professional Corner Hinge is the definitive solution for high-performance inward-opening sashes. Built to withstand the rigorous demands of **Quality Door Fittings**, this system utilizes reinforced pivot points to eliminate sash sag and ensure hermetic sealing over decades of operation.

As a premier component of Luoqi Hardware, the JBJLA series is optimized for sash widths between 400mm and 750mm. To maintain structural equilibrium in oversized panels, a middle hinge is required for any sash height exceeding 1200mm, ensuring uniform pressure distribution across the weather seals.

Engineering Matrix

◈ Application: Inward Opening (Side-Hung)
◈ Sash Width: 400mm — 750mm
◈ Sash Height: 500mm — 1600mm
◈ Standard: JG/T 176-2005
◈ Mid-Hinge: Required if H ≥ 1200mm
◈ Material: Forged Steel & Zinc Alloy

System Component Mapping

Component Name	Model Number	Standard Qty	Selection Note
Upper Corner Hinge	JBJLA-001(LR)	1 Set	Standard Fit
Middle Hinge	JBJLA-002	1 Set	Required if H ≥ 1200mm
Lower Corner Hinge	JBJLA-003(LR)	1 Set	Standard Fit
Friction Stay	FC1820-12	1 Set	Operational Safety

◈ Reinforced Corner Hinge

Utilizing heavy-duty **Steel Window Accessories**, the upper and lower hinges (JBJLA-001/003) are forged to support significant sash weights without deformation, maintaining the original opening geometry.

◈ Friction Motion Control

Integrated with the FC1820-12 stay, the system provides controlled resistance during opening to prevent the sash from swinging violently due to wind pressure, protecting the frame and glass.

◈ Multi-Point Integration

Designed for a **Durable Door System**, the JBJLA hinges work in tandem with the SCDGA transmission gears to provide a unified, multi-point locking experience across the entire sash perimeter.

Profile Compatibility

The JBJLA system is engineered for standard Plastic Steel Door and window profiles. We provide full CAD support to ensure exact machining of the corner hinge seats during extrusion processing.

Operational Compliance

All hinges are tested to exceed the lifecycle requirements of JG/T 176-2005, ensuring that Luoqi Hardware remains the premium choice for commercial and residential developments.