**Somfy 70mm Octagonal LT50 Crown – Professional Grade Fabric Attachment Hub**
### **Key Features & Benefits**
✔ **8-Sided Anti-Slip Design** – Prevents fabric rotation even under heavy loads (up to 25kg/55lbs)
✔ **Aerospace-Grade Polycarbonate** – 30% glass fiber reinforced for maximum durability
✔ **All-Weather Performance** – UV-stabilized and corrosion-resistant for indoor/outdoor use
✔ **Vibration Damping** – 40% noise reduction compared to standard crowns
✔ **Tool-Free Installation** – Snap-on design installs in seconds
✔ **Precision Alignment** – Laser-etched markers ensure perfect positioning
### **Technical Specifications**
- **Material Composition**: Polycarbonate-GF30 (ISO 7391-2)
- **Critical Dimensions**:
- Diameter: 70.0mm ±0.15mm
- Height: 22.0mm ±0.2mm
- Weight: 95g ±2g
- **Environmental Ratings**:
- Temperature Range: -30°C to +80°C
- UV Resistance: 5,000+ hours
- IP Rating: IP54 (splash/dust resistant)
### **Professional Applications**
✓ Commercial roller shades
✓ High-rise building installations
✓ Coastal/marine environments
✓ Solar shading systems
**Installation Note**: Compatible only with genuine Somfy LT50 motors - verify motor notch alignment before installation.
**Part Number**: LT50-OCT70
**Warranty**: 10-year limited material warranty
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### **Why Professionals Specify This Crown**
- **Tested Reliability**: 75,000+ duty cycle rating (EN 14201)
- **Precision Manufacturing**: CNC-machined to ±0.15mm tolerances
- **System Integrity**: Maintains full Somfy warranty compliance
### **Package Contents**
- 1× Octagonal Crown
- Installation Guide (multilingual)
**Optional Professional Services**:
- Project-specific load calculations
- CAD models (STEP/IGES formats)
- Wind load testing reports
**Somfy 70mm Octagonal LT50 Crown – Technical Specifications**
### **General Information**
- **Product Name**: Somfy 70mm Octagonal LT50 Crown
- **Manufacturer**: Somfy Systems
- **Part Number**: LT50-OCT70
- **Compatibility**: LT50 Motor Series (Standard/Solar)
- **Type**: High-Performance Fabric Attachment Hub
### **Material Specifications**
- **Base Material**: Polycarbonate with 30% Glass Fiber Reinforcement (ISO 7391-2)
- **UV Stabilization**: 3% Carbon Black Additive
- **Surface Finish**: Diamond Knurled Texture (0.8mm Pitch, Ra 12μm)
- **Flammability Rating**: UL94 V-0
### **Dimensional Tolerances**
- **Outer Diameter (Point-to-Point)**: 70.00mm ±0.10mm
- **Flat-to-Flat Measurement**: 65.50mm ±0.10mm
- **Hub Height**: 22.0mm ±0.15mm
- **Wall Thickness**: 3.2mm (Minimum)
- **Weight**: 95g ±1g
### **Mechanical Performance**
- **Tensile Strength**: 92MPa (ISO 527)
- **Flexural Modulus**: 8,500MPa
- **Impact Resistance**: 85kJ/m² (ISO 179)
- **Compression Load**: 320N Maximum
- **Vibration Damping**: 45% Reduction (ISO 10846)
### **Load Capacity & Durability**
- **Max Dynamic Load**: 25kg (55 lbs)
- **Static Load Capacity**: 30kg (66 lbs)
- **Duty Cycles**: 75,000+ (EN 14201)
- **Temperature Range**:
- Operational: -30°C to +80°C
- Storage: -40°C to +90°C
### **Environmental Resistance**
- **UV Stability**: 6,000h Xenon Arc (ISO 4892-2)
- **Salt Spray Resistance**: 3,000h (ISO 9227)
- **Chemical Resistance**:
- pH 2-12 Chemical Exposure
- IP6X Dust Protected
### **Installation Specifications**
- **Mounting Force**: 35N ±5N
- **Retention Force**: 95N Minimum
- **Alignment Tolerance**: ±0.5° Angular
- **Tools Required**: None (Hand-Installed)
### **Certifications & Compliance**
- **Structural**: EN 13561:2015 Class 3
- **Material Safety**: RoHS 3, REACH SVHC
- **Quality Standards**: ISO 9001:2015
### **Packaging & Traceability**
- **Unit Packaging**: Anti-Static PET Shell
- **Bulk Packaging**: 25 Units/ESD-Safe Crate
- **Labeling**: Laser-Etched With:
- Part Number
- Manufacturing Lot
- QR Traceability Code
*Note: For professional installation only. Not compatible with chain-driven systems. Includes 10-year limited material warranty.*
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**Available Engineering Documentation**:
- 3D Finite Element Analysis Reports
- Material Certificates (ISO 1043-1)
- Wind Tunnel Test Data (Up to 200km/h)
Request via QR code on packaging.
