FRÄNKISCHE ROHRWERKE SMSKu-EZF 40 Transparent Tensile-Resistant Conduit Coupling M40

For installations where a simple push-fit connector would pull apart under load, the FRÄNKISCHE ROHRWERKE SMSKu-EZF 40 delivers a genuinely tensile-resistant solution. This transparent M40 coupling locks onto corrugated conduits without tools, yet withstands high mechanical stress, making it a standout choice for demanding cable management in machinery, control cabinets, and outdoor installations. Unlike generic couplings that rely on friction alone, the SMSKu-EZF 40 uses a positive locking mechanism to maintain a secure connection even under vibration or cable tension.

Highlights

• Tensile-resistant plug-in coupling for M40 corrugated conduits
• Tool-free installation – simply push the conduit ends into the coupling
• Transparent polypropylene body allows visual inspection of the connection
• IP65 protection when properly installed, safeguarding against dust and water jets
• Wide operating temperature range from -25°C to +105°C
• Halogen-free, UV-resistant, flame retardant, and self-extinguishing
• VDE tested according to DIN EN 61386-23 for electrical installation conduits
• High impact resistance and pressure resistance of 750 N (Class 3)

In daily use

This coupling is engineered for professionals who need a reliable, quick-connect solution without sacrificing durability. The transparent design lets you confirm that the conduit is fully seated, reducing the risk of improper assembly. It is compatible with FRÄNKISCHE FFKu-Flex, FFKu-Speed, and FFKu-Smart corrugated flexible conduits, making it a versatile choice for a range of cable protection applications.

Full specifications

• Product Type: Conduit Coupling
• Coupling Type: Tensile-resistant plug-in coupling
• Nominal Size: M40 (NW40)
• Material: Polypropylene (PP)
• Color: Transparent
• Protection Class (IP): IP65 (when properly installed)
• Temperature Range: -25°C to +105°C
• Halogen-free: Yes
• UV-resistant: Yes
• Flame Retardant: Yes
• Self-extinguishing: Yes
• VDE Tested: Yes (VDE 0605 / DIN EN 61386-23)
• Connection System: Plug-in, tool-free
• Tensile Strength: High
• Impact Resistance: High
• Pressure Resistance: 750 N (Class 3)
• Conduit Compatibility: FFKu-Flex, FFKu-Speed, FFKu-Smart (corrugated flexible conduits)

Final note

Trusted by installers for its secure locking and transparent verification, the SMSKu-EZF 40 is a reliable component for demanding electrical installations.