Spiral Rigid High-Speed Insulated Door
The Spiral Rigid High-Speed Insulated Door is engineered for high-traffic exterior and interior industrial portals where thermal insulation, high security, wind resistance, and rapid operational speeds are essential.
Constructed with 45 mm thick thermal-break aluminum slats filled with high-density polyurethane (PU) foam, this door achieves superior insulation (K≤0.6 W/(m² ⋅ K)) and structural strength rated to withstand wind loads up to Grade 12 (120 km/h). Utilizing a contactless spiral guide track, the curtain rolls up smoothly without slat-to-slat contact, preventing surface wear, eliminating operating noise, and supporting over 150,000 continuous operating cycles annually.
Key Engineering Features
- 45 mm Thermal-Break Insulated Slat Construction
- Fabricated from dual 0.7 mm aluminum skins with an integrated thermal break profile and an injected high-density polyurethane foam core (45 kg/m³). Delivers exceptional thermal efficiency (K≤0.6 W/(m²⋅K) on a closed 4m×3m door), structural rigidity, and impact resistance.
- Non-Contact Spiral Guide Track Technology
- The dual-turbine spiral track guides the slats into a circular coil where panels never touch one another. This eliminates surface scratching, prevents mechanical friction, and ensures quiet, vibration-free travel at speeds up to 1.0 m/s.
- High Wind Load Resistance (Grade 12 / 120 km/h)
- The rigid interlocking panel structure and heavy-duty 2.3 mm galvanized guide channels provide robust resistance against strong positive and negative wind pressures up to Grade 12 (120 km/h).
- Independent Slat Modular Replacement
- If a panel is damaged by vehicle impact, individual slats can be detached and replaced independently by a single technician without dismantling the entire door leaf, minimizing maintenance downtime.
- Advanced Servo Direct-Drive System & DSP Control
- Driven by an industrial servo coaxial motor paired with a high-speed DSP processor and multi-turn absolute value encoder. The system maintains continuous torque, accurate position memory across power outages, and digital soft-cushion terminal buffering to protect gear reducers from mechanical shock.
- QPQ-Treated Steel Pins with PEEK Bushings
- Panel hinge connections utilize QPQ surface-hardened steel pins paired with low-friction PEEK bushings, providing superior wear resistance, self-lubrication, and anti-corrosion protection in demanding chemical or washdown environments.
- Integrated Counterbalance & Emergency Manual Release
- Dual torsion/tension spring systems housed inside the side columns counterbalance curtain weight to reduce motor strain. In the event of a power failure, a manual brake release lever allows operators to easily open the door.
- Comprehensive Multi-Point Safety Architecture
- Engineered in strict accordance with European safety standard DIN EN 12604. Equipped standard with dual-height photocells (450 mm above floor level), a wireless safety bottom edge, and optional 1800 mm high-density optical light curtains.
Track Architecture Options
To accommodate diverse facility overhead constraints, three track configurations are available:
- Circular Spiral Track (Standard): The primary configuration for facilities with standard headroom, providing the smoothest acceleration and quietest coiling.
- Oval Spiral Track (Compact): A space-saving geometry engineered for structural openings with restricted overhead clearance.
- Low-Headroom Track: Designed specifically for underground parking garages and low-ceiling loading bays.
Technical Specifications
| Parameter / Component | Specification |
| Operating Speeds | Opening: 0.6 – 1.0 m/s (Adjustable) | Closing: 0.6 – 1.0 m/s (Adjustable) |
| Slat Thickness & Profile | 45 mm total thickness | 190 mm slat height | 0.7 mm dual aluminum skin |
| Core Insulation Material | High-density Polyurethane (PU) foam (45 kg/m³) with thermal break |
| Thermal Transmittance | K≤0.6 W/(m²⋅K) (Tested on closed 4m×3m door) |
| Wind Resistance Rating | ≤Grade 12 (120 km/h) |
| Track & Side Guide Assembly | 2.3 mm galvanized steel guide frames (310 mm width, 450 mm drive clearance) |
| Hinge & Bushing Material | QPQ-treated alloy steel pivot shafts with wear-resistant PEEK bushings |
| Drive Motor System | High-torque Industrial Servo Coaxial Motor (IP54/IP65 protection) |
| Control Unit | Heavy-duty IP54 control cabinet with DSP core, LED fault display & absolute encoder |
| Counterbalance Mechanism | Dual internal counterbalance column spring assemblies |
| Standard Safety Devices | 1. In-column photoelectric sensors (450 mm height)<br>2. Wireless contact-strip safety bottom edge<br>3. Emergency manual brake release mechanism |
| Optional Safety / Activation | 1800 mm infrared light curtains, magnetic floor loops, Bluetooth/RFID proximity sensors |
| Power Supply | Single-Phase 220V / 14A / 50 Hz |
| Safety Standard Compliance | Designed in accordance with DIN EN 12604 |
Slat Types & Color Finishes
Available panel configurations to match architectural and functional specifications:
- PU Foamed Insulated Slats (Standard): Solid double-aluminum panels with thermal break and PU core for maximum thermal performance.
- Aluminum Hollow Slats: Lightweight extruded aluminum slats for interior partition security.
- Fully Transparent Vision Slats: Modular polycarbonate window sections providing natural light and optical clarity.
- Surface Color Options: Standard Anodized Aluminum, Champagne Gold, Signal Blue, Pure White, or custom RAL color matching.
Industrial Applications
- Automotive Manufacturing & Logistics: High-frequency body shop portals, exterior shipping bays, and test track access doors.
- Pharmaceutical & Food Processing: Exterior barrier doors requiring strict thermal separation, dust prevention, and washdown resistance.
- Chemical & Heavy Industrial Plants: Corrosive or high-wind environments requiring secure, durable perimeter closures.
- Underground Parking & Commercial Garages: Low-headroom high-traffic vehicle portals requiring quiet operation, speed, and continuous duty cycles.
Frequently Asked Questions (FAQ)
A: As the door opens, the aluminum slats are directed into a spiral turbine track that spaces each slat individually. Because the panels never contact or rub against each other during winding, surface scratches and mechanical rattle are eliminated, prolonging the visual finish and extending mechanical service life.
A: The slat is engineered with a broken-bridge thermal barrier and filled with 45 kg/m³ high-density polyurethane foam. For a closed 4m×3m door, the thermal transmittance reaches K≤0.6 W/(m²⋅K) , significantly reducing thermal transfer between conditioned indoor areas and exterior environments.
A: Unlike conventional continuous rolling shutters, each insulated slat is fastened independently with modular hinge brackets. If a panel is damaged, a single technician can unscrew and slide out the individual slat without dismounting the entire door curtain, drastically lowering maintenance labor and downtime.
A: In addition to standard circular spiral tracks, an oval spiral track and a specialized low-headroom horizontal track are available. These configurations allow high-speed rigid doors to be installed in underground parking garages or facilities with limited overhead space.
A: The door is equipped with internal counterbalance springs that balance the curtain weight. By releasing the motor brake via the manual emergency lever, operators can easily raise the door by hand. Once power is restored, the absolute value encoder automatically recovers position memory without requiring manual recalibration.