**Somfy DS 70 LT50 Crown – Product Description**
The **Somfy DS 70 LT50 Crown** is a heavy-duty fabric attachment hub designed for demanding shade applications with LT50 tubular motors. Its robust construction and precision engineering ensure reliable performance in commercial and residential installations.
### **Key Features:**
✔ **70mm Diameter** – Ideal for large shade fabrics
✔ **Anti-Slip Design** – Prevents fabric rotation under load
✔ **Durable Polycarbonate** – 30% glass-reinforced for strength
✔ **Tool-Free Installation** – Simple snap-on attachment
✔ **High Load Capacity** – Supports up to 25kg (55 lbs)
✔ **All-Weather Use** – UV-stabilized for outdoor applications
### **Technical Specifications:**
- **Material**: Polycarbonate-GF30
- **Weight**: 95g
- **Operating Temperature**: -30°C to +80°C
- **Color**: Neutral gray
### **Compatibility:**
✓ LT50 standard and solar motors
✓ Oversized roller shades
✓ High-wind environments
**Installation Note**: Align with motor notches for secure fit.
**Part Number**: DS70-LT50
**Somfy DS 70 LT50 Crown – Technical Specifications**
### **General Information**
- **Product Name**: Somfy DS 70 LT50 Crown
- **Manufacturer**: Somfy Systems
- **Part Number**: DS70-LT50
- **Compatibility**: LT50 motor series (standard/solar)
- **Type**: High-performance fabric attachment hub
### **Material & Construction**
- **Base Material**: Polycarbonate with 30% glass fiber reinforcement (ISO 7391-2)
- **UV Protection**: 3% carbon black additive
- **Surface Texture**: Diamond knurling (0.8mm pitch)
- **Flammability Rating**: UL94 V-0
### **Dimensional Specifications**
- **Outer Diameter**: 70.0mm ±0.15mm
- **Hub Height**: 22.0mm ±0.2mm
- **Weight**: 95g ±2g
- **Wall Thickness**: 3.0mm (minimum)
### **Mechanical Properties**
- **Tensile Strength**: 90MPa (ISO 527)
- **Impact Resistance**: 80kJ/m² (ISO 179)
- **Compression Load**: 300N maximum
- **Vibration Damping**: 40% reduction (ISO 10846)
### **Performance Characteristics**
- **Max Fabric Load**: 25kg continuous
- **Rotation Prevention**: Positive-lock design
- **Duty Cycles**: 75,000+
- **Temperature Range**:
- Operational: -30°C to +80°C
- Storage: -40°C to +90°C
### **Installation Data**
- **Installation Force**: 30N push-on
- **Removal Force**: 90N pull-off
- **Alignment Marks**: Laser-etched indicators
### **Environmental Ratings**
- **UV Resistance**: 5000h Xenon arc tested
- **Humidity Resistance**: 100% RH temporary
- **Chemical Resistance**: Resists oils, weak acids
### **Certifications & Compliance**
- **Material Safety**: RoHS 3 compliant
- **Quality Standards**: ISO 9001:2015
- **Structural Rating**: EN 13561:2015
### **Packaging**
- **Unit Packaging**: Recyclable PET clamshell
- **Bulk Packaging**: 25 units/foam-lined case
- **Labeling**: Laser-etched part number + QR code
*Note: For professional installation only. Not for use with chain-driven systems.*