**Somfy 40mm Octagonal Crown**
The 40mm Octagonal Crown is available in the following options:
Ensure perfect motor integration with the **Somfy 40mm Octagonal Crown**, a precision-engineered adapter designed specifically for 40mm octagonal tubes in motorized shade systems. This professional-grade component delivers secure attachment and optimal torque transfer for reliable performance in commercial and residential applications.
### **Key Features:**
- **Perfect Fit** – Designed for 40mm octagonal tubes (0.8-1.2mm wall thickness)
- **Secure Connection** – 3-point screw fixation prevents slippage
- **Optimal Torque Transfer** – Octagonal profile ensures positive engagement
- **Durable Construction** – Zinc alloy body with corrosion-resistant coating
- **Easy Installation** – Simple screw-on assembly
- **Vibration Reduction** – Minimizes operational noise
### **Technical Specifications:**
- **Material:** Zamak 5 zinc alloy
- **Finish:** Anti-corrosion electroplating
- **Max Torque:** 5Nm
- **Temperature Range:** -4°F to 158°F (-20°C to 70°C)
- **Weight:** 90g
### **Includes:**
- 1x Octagonal crown
- Mounting screws
- Installation guide
**Note:** For use with Somfy 400/500 series motors.
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**Why Choose This Crown?**
✔ Maintains system warranty compliance
✔ Professional-grade durability
✔ Ensures consistent performance
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**Installation Tip:**
Clean tube end thoroughly before installation.
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**Warranty:**
3-year limited warranty.
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**Safety Compliance:**
Tested to UL standards.
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**Design Advantage:**
Precision-machined octagonal socket.
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**Performance Benefit:**
Eight-point contact prevents tube deformation.
### **Somfy 40mm Octagonal Crown – Technical Specifications**
#### **General Specifications**
- **Model Number:** OCT-CRN-40
- **Type:** Motor mounting crown for octagonal tubes
- **Compatibility:** 40mm octagonal tubes (0.8-1.2mm wall)
- **Motor Compatibility:** Somfy 400/500 series tubular motors
#### **Mechanical Specifications**
- **Material:** Zamak 5 zinc alloy (ZnAl4Cu1)
- **Finish:** Electroplated zinc-nickel + clear coat
- **Mounting Type:** 3-point M5 screw fixation
- **Torque Rating:** 5Nm max
- **Weight:** 90g ±2g
#### **Octagonal Engagement**
- **Socket Profile:** 8-point precision machined
- **Flat-to-Flat:** 40.0mm ±0.05mm
- **Engagement Depth:** 0.79" (20mm)
- **Angular Tolerance:** ±0.25° per face
#### **Performance Specifications**
- **Max Radial Load:** 250N
- **Rotational Stability:** <0.3° backlash
- **Vibration Damping:** 8dB noise reduction
- **Service Life:** ≥100,000 cycles
#### **Installation Requirements**
- **Tube Preparation:**
- Clean, burr-free octagonal ends
- Verify wall thickness (0.8-1.2mm)
- **Tools Required:**
- 4mm hex key
- Rubber mallet (for initial seating)
#### **Environmental Ratings**
- **Operating Temp:** -4°F to 158°F (-20°C to 70°C)
- **Humidity Range:** 10-95% RH
- **Corrosion Resistance:** 1000hr salt spray
#### **Certifications**
- **Materials:** RoHS 3, REACH compliant
- **Safety:** EN 60335-1
- **Quality:** ISO 9001:2015
#### **Package Contents**
- 1x Octagonal crown
- 3x M5x12mm stainless screws
- Installation guide
#### **Warranty**
- 3-year limited warranty
**Key Advantages:**
- CNC-machined for perfect octagonal engagement
- Anti-galvanic isolation coating
- Maintenance-free design
**Installation Notes:**
1. Apply thread locker to screws
2. Verify full 8-point contact
3. Torque screws to 4Nm in star pattern
*Professional installation recommended. Not for round tubes.*
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**Maintenance:**
- Annual visual inspection
- Replace if coating is compromised
- Do not lubricate contact surfaces
This specification provides installers with exact technical requirements for proper motor integration with octagonal tube systems, emphasizing the crown's precision engineering for commercial applications.
