EUROLITE STR-3550L Truss Clamp Adapter Half Coupler 75kg 32-35mm Silver 59007084

Stage technicians and event riggers rely on the EUROLITE STR-3550L to secure lighting fixtures, spotlights, and decorative elements to truss systems with confidence. This half-coupler adapter clamps onto tubes with diameters from 32 to 35 mm, providing a stable mounting point via its integrated M10 wing screw. The lightweight yet robust aluminum body is TÜV certified for a working load limit of 75 kg, making it a dependable choice for professional installations in theatres, concert venues, studios, and exhibition booths.

Key specifications

• Type: Truss clamp adapter / half coupler
• Material: Aluminum (natural silver finish)
• Max. load capacity (WLL): 75 kg
• Compatible tube diameter: 32–35 mm
• Mounting bolt thread: M10
• Mounting bolt type: Wing screw (manual tightening)
• Certification: TÜV certified
• Color: Silver
• Design: Half-shell
• Application: Mounting lighting fixtures, spotlights, decorative elements
• Usage environment: Stage, event technology, studio, exhibition
• Corrosion resistance: Yes (aluminum construction)
• Safety factor: Typically 5:1 for rigging hardware

Why choose it

The STR-3550L combines a high 75 kg working load limit with a compact, lightweight form factor that eases handling during setup and teardown. Its aluminum construction resists corrosion, ensuring long-term reliability even in demanding touring conditions. The manual wing screw allows quick, tool-free attachment and adjustment, speeding up rigging changes between acts or scenes. TÜV certification provides documented safety assurance for production managers and venue inspectors.

Ideal use cases

• Mounting moving heads, PAR cans, and LED fixtures on truss
• Securing small speakers, mirror balls, or signage in event spaces
• Creating flexible lighting positions in studios and exhibition stands
• Replacing worn or non-certified clamps in rental inventories

Good to know

The clamp's half-shell design wraps partially around the tube, leaving the opposite side free for cable routing or adjacent hardware. Always verify that the tube diameter falls within the 32–35 mm range before loading. For permanent installations, periodic inspection of the wing screw and clamp body is recommended. The natural aluminum finish blends seamlessly with silver truss systems and standard rigging accessories.