Adjustable Two Way Gearbox CDH 20 28S

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Packaging & Delivery

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Product Description

Luoqi Door Systems

CDH 20 28S
Adjustable
Two Way Gearbox

The pinnacle of adaptive Window Hardware. Engineered with calibrated adjustability to redefine Premium Hardware Solutions for complex Aluminum Alloy Hardware profiles.

Model Identifier CDH 20 28S

Micro-Adjustable Logic
for Macro-Stability

The CDH 20 28S Adjustable Two Way Gearbox is a masterclass in modular hardware design. Specifically developed for high-end aluminum alloy Hardware systems, this unit allows for post-installation calibration of the transmission stroke, ensuring that multi-point locking rods achieve absolute alignment even in oversized architectural openings.

By integrating a high-strength adjustable rack mechanism, the CDH 20 28S mitigates the tolerance issues often found in complex profile fabrications. This is the essential choice for Luoqi Door Systems projects where thermal efficiency and air-tightness depend on the precision of the synchronized drive.

CDH-Series DNA

◈ Calibrated "S" Series Stroke
◈ Anti-Backlash Gear Engagement
◈ 20mm/28mm Critical Clearance
◈ Hardened Sintered Steel Gears
◈ Tool-Access Adjustment Port
◈ High-Torque Kinetic Output

Structural Optimization

Synchronizing the future of Premium Hardware Solutions.

Adaptive Stroke Logic

The CDH 20 28S features a unique adjustable output interface. This allows facade engineers to fine-tune the rod displacement, compensating for slight variances in gasket compression or profile thermal expansion across the window's vertical axis.

High-Frequency Endurance

As a core component of Window Hardware, the CDH series is life-cycle tested to 60,000+ operations. The use of carbon-hardened steel in the primary drive gears ensures that the "Two-Way" synchronization remains crisp and lag-free for the lifetime of the building.

Acoustic Dampening

The internal housing is designed with reinforced sonic baffles and high-viscosity industrial lubricants, reducing the mechanical resonance during handle rotation. The result is a premium, silent operation that complements high-end luxury interiors.

Profile Interconnectivity

With a standardized 20/28mm configuration, the CDH 20 28S integrates effortlessly with European standard C-slot and modern minimalist aluminum profiles, providing a universal platform for advanced hardware specification.

Engineering Advisory

Precision selection of the CDH series ensures structural integrity for high-performance fenestration systems.

◈ Adjustment Protocol

The adjustment screws are accessible via the gearbox faceplate, allowing for +/- 3mm of stroke calibration without the need to dismantle the handle or the Aluminum Alloy Hardware profiles. This significantly reduces on-site labor costs during the final project commissioning phase.

◈ Material Durability

Constructed from premium Grade 5 Zinc-Aluminum alloy with a secondary anti-oxidative silver finish, the CDH 20 28S is built to resist corrosion in high-humidity and coastal environments.