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Circular Automatic Sliding Doors
The Madoors USA Circular Automatic Sliding Door is a premium curved and circular automatic sliding glass door system available in full circle, semicircle, arc, concave, and convex configurations at any specified radius — providing unlimited architectural freedom for curved facades, curved entrance designs, and circular building entrance applications. Engineered to the same high durability and aesthetic standards as all Madoors USA door systems, the circular sliding door combines elite construction quality with hidden vertical active infrared safety sensors securing the entire movement area of the door wings — delivering the architectural distinction of a fully curved automatic door with the operational safety and reliability of a certified commercial-grade automatic door system.
Surface finish options include electrostatic powder coating in RAL color standards, anodizing coloring techniques, and stainless steel — with laminated or tempered safety glass available for wing panel glazing across all configurations.
TECHNICAL SPECIFICATIONS
The Madoors USA Circular Automatic Sliding Door is available in the following curved configuration types — full circle providing a complete 360-degree circular entrance enclosure, semicircle providing a half-circle entrance configuration suited to circular building lobby entrances, and arc providing a partial curved segment for concave or convex facade entrance integration at any radius specified by the project architectural design.
Both concave and convex curved configurations are available — concave curving inward toward the building for entrances recessed into curved building facades, and convex curving outward from the building for entrances projecting from curved or flat facades where the circular door is an architectural feature element. Any radius can be specified, allowing the door system to be manufactured to match the exact curvature of the surrounding building facade or entrance design without dimensional compromise.
The drive and guidance mechanism accommodates the curved travel path of the door wings throughout the full open and close cycle, with the wing panels traveling along the curved track geometry without deviation from the specified radius. Vertical active infrared safety sensors are concealed within the door mechanism and secure the entire movement area of the wing panels — detecting any person or object in the door travel zone and halting door movement immediately upon detection.
Surface finishes available on the door frame and visible hardware include electrostatic powder coating in any RAL color, anodizing coloring in a range of metallic and color finishes, and stainless steel. Wing panel glazing is available in laminated safety glass — providing glass fragment retention on breakage — and tempered safety glass — providing controlled fracture into small, less injurious fragments on breakage. Glazing specification is selected based on the safety performance and aesthetic requirements of the specific installation.
KEY FEATURES
Full Circle, Semicircle, Arc, Concave & Convex Configurations
Five geometric configuration options provide complete architectural flexibility for curved entrance design — full circle for standalone circular entrance pavilions and circular lobby enclosures, semicircle for half-circle lobby entrance systems on curved building facades, arc for partial-curve integration into any building facade geometry, and concave or convex orientation for any of the above to match the inward or outward curvature of the surrounding architectural context.
Any Radius — Unlimited Curved Facade Freedom
The door system is manufactured to any specified radius, allowing precise matching of the door curvature to the architectural radius of the surrounding building facade, lobby geometry, or design concept — without the dimensional compromise and visual discontinuity of approximating the curved facade with standard flat-panel door systems. This any-radius manufacturing capability is the defining design freedom advantage of the Madoors USA circular sliding door.
Hidden Vertical Active Infrared Safety Sensors
Vertical active infrared safety sensors are concealed within the door mechanism — invisible from the exterior and interior — and monitor the entire movement area of the door wings throughout the full open and close cycle. Any person or object detected in the wing travel zone immediately triggers door movement halt, preventing contact injury without requiring visible sensor hardware that would interrupt the clean visual profile of the curved door system.
Electrostatic Powder Coating, Anodizing & Stainless Steel Finishes
Three surface finish categories cover the full range of architectural finish requirements — electrostatic powder coating in any RAL color for painted finish applications, anodizing coloring for metallic architectural finishes in bronze, champagne, silver, and custom colors, and stainless steel for premium contemporary entrance applications where the reflective, corrosion-resistant character of stainless steel complements the curved glass door aesthetic.
Laminated & Tempered Safety Glass Wing Panels
Wing panel glazing in laminated safety glass or tempered safety glass satisfies the safety glazing requirements applicable to automatic door systems in commercial and public building entrance applications — with laminated glass retaining fragments on breakage and tempered glass fracturing into small particles. Glazing type is selected based on the safety standard requirements and aesthetic preferences of each specific installation.
Elite Durability & Aesthetic Construction
The Madoors USA circular sliding door is an elite product manufactured to the high durability and aesthetic quality standards consistent across the full Madoors USA automatic door range — with every visible component engineered and finished to the standard required for premium architectural entrance applications at corporate headquarters, luxury hotels, shopping centers, airports, and flagship retail environments.
ASSEMBLY & INSTALLATION SEQUENCE
Architectural Design Coordination & Radius Specification
The exact curvature radius, configuration type — full circle, semicircle, arc, concave, or convex — opening width, door height, glazing specification, and surface finish are confirmed from the project architectural drawings. AutoCAD or BIM coordination with the project architect confirms dimensional compatibility between the door system and the surrounding curved building facade or lobby structure.
Curved Track & Header Structure Preparation
The building header and surrounding structure at the door position are prepared to the specified dimensions for the curved track system. The curved overhead track — manufactured to the confirmed radius — is installed at the header position and verified for geometric accuracy against the specified radius and curvature configuration.
Drive Mechanism & Safety Sensor Installation
The automatic drive mechanism is installed within the curved track assembly. Vertical active infrared safety sensors are installed concealed within the mechanism housing at the specified positions. All sensor positions and coverage arcs are verified for full wing movement zone coverage before wing installation.
Curved Wing Panel Fabrication & Glazing
Wing panels are fabricated to the confirmed curved geometry with the specified frame finish — powder coating, anodizing, or stainless steel. Laminated or tempered safety glass panels are installed in the wing frames and verified for edge seal integrity and glazing quality.
Wing Panel Hanging & Travel Verification
Curved wing panels are hung on the curved track drive carriages and the full open-to-close travel arc is verified for smooth, consistent radius tracking without deviation from the specified curvature at any point in the travel range.
Drive System Commissioning & Safety Testing
The automatic drive is commissioned — travel speed, deceleration, open hold time, and limit positions are set and verified. All safety sensor responses — detection halt, resume, and emergency stop — are tested across the full wing movement zone. Anti-crushing and reversal functions are verified.
Surface Finish Inspection & Final Testing
All frame surface finish — powder coating, anodizing, or stainless steel — is inspected for quality and consistency. Complete operational testing across all automatic, safety, and manual override functions is conducted. Installation handover documentation is completed.
DEPLOYMENT SCENARIOS & USE CASES
Madoors USA Circular Automatic Sliding Doors are specified for any curved building entrance where architectural distinction, curved facade integration, and high-quality automatic door performance are simultaneously required.
- Luxury hotel and resort circular lobby entrance doors
- Corporate headquarters curved facade entrance systems
- Premium retail flagship store and department store entrances
- Shopping center and luxury mall circular entrance pavilions
- Airport terminal curved facade passenger entrance doors
- Museum, gallery, and cultural institution circular entrances
- Bank headquarters and financial institution curved entrances
- Government and civic building curved public entrance systems
- University and academic institution landmark entrance doors
- Hospital and healthcare facility curved main entrance systems
- Convention center and exhibition hall circular entrance systems
- Residential luxury apartment tower curved lobby doors
- Stadium and arena VIP entrance circular door systems
- Pharmaceutical and research facility curved entrance doors
- Transport hub and railway station curved entrance systems
- Category: Automatic Door