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Black anodised aluminium arch coupler, 38 to 51 mm tube range, 150 kg rating

Kupo

Kupo Arch Coupler Black 38-51mm 150kg

SKU CH-R6JW-PP634

Connects truss tubes from 38 mm to 51 mm with a 150 kg load rating in a lightweight aluminium body

  • Secure truss connections for stable lighting rigs
  • Fits tube diameters from 38 mm to 51 mm
  • Supports loads up to 150 kg or 330 lb
  • Lightweight aluminium body weighs just .7 kg
  • M10 and M12 hex countersunk holes for flexible mounting

Secure Truss Connection for Lighting Pros

The Kupo Arch Coupler creates a rigid link between truss sections in lighting and studio rigs, supporting loads up to 150kg or 330lbs. It fits tube diameters from 38mm to 51mm, covering common 1.5 inch and 2 inch sizes. The black anodized aluminum body weighs only .7kg, keeping the overall rig light for transport and quick setup.

Double-Level Countersunk Mounting Options

Each coupler includes two countersunk levels drilled for M10 or M12 hex hardware, letting installers choose the bolt size that matches their existing truss system. This dual pattern removes the need for separate adapter plates and speeds up reconfiguration between jobs. The low-profile extrusion sits close to the tube, reducing snag points on cables and fabric.

Verify Tube Diameter and Bolt Hardware First

Measure the outer diameter of every truss tube you plan to join; the coupler only accepts 38mm to 51mm ranges. Confirm your inventory uses M10 or M12 hex bolts, as no other thread sizes are accommodated. Builders needing to connect larger-diameter truss or different bolt patterns will need a different coupler.

Highlights

  • Secure truss connections for stable lighting rigs
  • Fits tube diameters from 38 mm to 51 mm
  • Supports loads up to 150 kg or 330 lb
  • Lightweight aluminium body weighs just .7 kg
  • M10 and M12 hex countersunk holes for flexible mounting

Specifications

No published specifications for this item yet.

Questions about this item

Will the M10 or M12 hex bolts need periodic retightening?

The coupler uses double-level countersunk holes for M10 or M12 hex bolts; check torque after initial load cycles and inspect before each rigging job.

At what load does the 150 kg rating become the limiting factor?

The Arch Coupler is rated for 150 kg (330 lbs); exceeding this load risks structural failure of the aluminum extrusion.

Does the black anodised finish reduce heat buildup during all-day use?

The anodised coating is for corrosion resistance and appearance; the coupler has no moving parts or electronics, so heat generation is negligible.

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