Frameless Glass Door Hinges are metal hinge connectors designed specifically for frameless glass doors, securing them and ensuring smooth opening and closing. Crafted from high-strength stainless steel and aluminum alloy, they combine load-bearing strength, corrosion resistance, and structural stability. These hinges are primarily concealed, providing a secure connection between the door leaf and the wall or glass side panels without disrupting the overall visual appearance. They rotate smoothly when opened and precisely align when closed, without shaking or noise. The precision-machined rounded head, with a brushed or mirrored finish, ensures a clean, shiny appearance even in high-humidity environments, providing a quiet, smooth, and safe user experience.

High-Load-Bearing Structure

This frameless glass door hinge is constructed from high-strength SUS304 stainless steel. A single hinge can withstand a load of 400N, and a combination of two can support a 40kg glass door. The shaft core undergoes precision heat treatment, achieving a hardness of HRC32 or higher, ensuring the structure remains stable under long-term loads. Installation tests show that for a glass door 900mm wide and 10mm thick, door sag is controlled to less than 1mm, maintaining excellent stability.

Stable Rotational Accuracy

The clearance between the main shaft and the bushing is less than 0.03mm, and the opening and closing angle error is controlled within ±2°. The opening and closing resistance torque is maintained between 0.8 and 1.1N·m, and it maintains smooth rotation without abnormal noise after 100,000 consecutive openings and closings. The precision-fitting structure effectively improves the door's balance and lifespan, ensuring the glass door maintains precise alignment over long-term use.

Strong Corrosion Resistance

The frameless glass door hinges feature a satin brushed and polished mirror finish with a roughness of Ra ≤ 0.8μm, reducing moisture adhesion. The SUS316 material passes a 120-hour neutral salt spray test without red rust, making it suitable for high-humidity or chlorine-containing environments. The surface corrosion-resistant layer, 0.8μm thick, effectively blocks oxidation and prolongs the life of the metallic luster.

Stable Clamping System

The hinge clamping surface utilizes a 2mm-thick EPDM non-slip rubber pad with a friction coefficient of ≥ 0.75, effectively preventing glass slippage and chipping. The screws are M6-grade stainless steel fasteners with a recommended installation torque of 8-10 N·m. With a clamping width of 43mm and a length of 86mm, they maintain a stable clamping force even under frequent opening and closing conditions, ensuring the door remains stable and stable over time.

Beautiful and Uniform Craftsmanship

The design features a rounded head with smooth corners and no sharp edges. With a surface hardness exceeding HV200, scratch resistance is increased by 30%. Satin brushed and Polish mirror finishes can be customized to suit your decorating style, with a reflectivity of up to 60% and a consistent gloss. CNC-finished products achieve a brushed direction deviation of ≤5°, ensuring a uniform appearance across the entire batch.

Home Bathrooms

When used in home showers, frameless glass door hinges provide stable support for 8–10mm thick glass doors, ensuring precise opening angles and smooth opening and closing. Their high sealing prevents moisture from escaping, helping to separate wet and dry areas. The door remains silent during daily use, eliminating metallic clashing sounds and enhancing bathroom comfort.

High-end Hotel Bathrooms

In high-end hotel showers, these hinges utilize precision bearings for smooth opening and closing, capable of withstanding hundreds of daily openings and closings. The SUS316 construction remains rust-proof and colorfast in bathing areas with humidity levels up to 85%, maintaining a consistent mirror-like finish. Their tight closing performance helps hotels maintain high standards of cleanliness and safety over the long term.

Leisure Clubs and Poolsides

Pools and clubs are known for their high humidity and high chlorine content. These frameless hinges, with an IP44 rating, are moisture-resistant, corrosion-resistant, and oxidation-resistant. Even after extended use, the hinges maintain stable opening and closing resistance, unaffected by chlorine corrosion. It provides durable and reliable structural support for leisure spaces.

Healthcare Spaces

When used in hospitals and healthcare facilities, the smooth surface facilitates cleaning and disinfection. With a surface roughness of Ra ≤ 0.8μm and no dust trapping areas, it can be cleaned with alcohol or medical detergent. Its stable structure and lack of exposed screws help ensure safety and hygiene standards in healthcare facilities.

Office and Exhibition Spaces

In commercial spaces such as glass partition doors and display cabinets, this hinge provides stable support for glass doors up to 900mm in width, ensuring excellent rotational balance. The concealed structure creates a sleek door profile, and the mirrored finish enhances the sense of reflection, enhancing visual transparency and a sense of spatial depth.

Regular Surface Cleaning

Clean the surface weekly with a neutral detergent and wipe with a dry cloth after cleaning to maintain the metallic luster. Avoid using acidic, alkaline, or chlorinated solutions to prevent damage to the protective coating. For locations with frequent cleaning (such as hotels or swimming pools), it is recommended to wipe the surface daily to reduce water residue.

Spindle Lubrication and Maintenance

Apply 0.2g of silicone-based grease to the hinge spindle every 12 months to effectively reduce friction and noise. After lubrication, wipe away any excess grease with a non-woven cloth to prevent dust from accumulating. Maintaining lubrication can extend spindle life by over 20%.

Regular Tightening Inspections

Check the screws every six months to ensure the torque is within 8 N·m. If the door body is slightly misaligned, readjust the clamping position and tighten the rubber pads. This prevents glass sagging or loosening, ensuring safe use.

Moisture and Mold Prevention

Maintaining ventilation effectively reduces moisture accumulation. Wipe away moisture after use to prevent water droplets from remaining on the metal surface. In coastal areas or high-humidity spaces, it's recommended to rinse with clean water monthly to prevent surface corrosion caused by salt.

Inspect the Rubber Gasket and Edges

Inspect the EPDM rubber gasket quarterly for signs of aging, hardening, or compression deformation, and replace if necessary. If cracks or burrs appear on the glass edges, immediately remove the glass from service and have it repaired. Keeping the clamping area clean and intact avoids localized stress concentrations and improves overall safety.