Side view of cable tray support frame

The side of a cable tray support frame serves as the primary structural element that holds the tray in place, connecting it to brackets, cantilever arms, or ceiling suspensions while maintaining load capacity and alignment.

Function and Design

The side of a cable tray support frame is typically a vertical or angled rail that runs along the length of the tray. Its main functions include:

• Supporting the tray structure: The side rails bear the weight of the cables and the tray itself, transferring loads to the support brackets or suspension points .
• Maintaining alignment: They ensure the tray remains straight and level, preventing sagging or misalignment over long runs .
• Attachment points: Side rails provide locations for mounting brackets, cantilever supports, or threaded rod suspensions, allowing secure fastening to ceilings, walls, or steel structures .
• Cable containment: In ladder or ventilated tray designs, the side rails help keep cables within the tray and provide anchor points for cable ties or clamps .

Materials and Dimensions

Side rails are usually made from steel, stainless steel, or aluminum, often with galvanization or powder coating for corrosion resistance . Standard dimensions vary depending on tray width and load requirements, with typical edge heights ranging from 60 mm to 150 mm for industrial applications . The thickness and profile of the side rail are selected to meet mechanical load specifications and safety standards.

Installation Considerations

• Support spacing: Side rails must be supported at intervals defined by the tray's load rating, often using cantilever brackets, TKS or KTUG brackets, or ceiling-mounted threaded rods .
• Connection to fittings: Side rails are designed to integrate with horizontal and vertical bends, T-pieces, and crossovers, ensuring continuous structural support along the tray system .
• Load capacity: The side rails must accommodate the combined weight of cables, tray, and any additional equipment, including allowances for short-circuit forces in power installations .
• Flexibility: Modular side rails allow for adjustments on-site, including the addition of spacers, head plates, or U-profiles to adapt to varying ceiling heights or structural conditions .

Best Practices

• Use side rails and support components that are tested together as a system to ensure safety and reliability .
• Ensure proper alignment and leveling during installation to prevent stress on the tray and cables.
• Consider environmental factors such as corrosion, temperature, and mechanical loads when selecting side rail material and finish .
• Follow relevant standards such as DIN EN 61537 or BS EN 61537 for industrial cable support systems . In summary, the side of a cable tray support frame is a critical structural element that ensures the tray's stability, supports cable loads, and provides secure attachment points for brackets and suspensions, while complying with mechanical and environmental requirements.