Several suspension rods for cable tray hangers

Suspension rods are essential for securely supporting cable trays, with options ranging from single to multiple rods depending on load, tray type, and installation height. Types of Suspension Rods and Hangers1.

Side and Centre Suspension Rods

Side suspension supports are used for ceiling-mounted mesh trays and can accommodate 1 or 2 threaded rods, supporting medium loads up to 100 kg per point for a 2-rod set (Rejiband® system) without requiring screws for connection. Centre suspension rods are designed to support trays from the middle, providing balanced load distribution for longer spans. 2.

Single and Double Hanger Brackets

Single hanger brackets are suitable for overhead or beam mounting, typically including a 1/2"-16 UNC threaded rod and nuts, with load capacities around 50 lbs for standard Snap Track trays. Double rod configurations increase stability and load capacity, especially for wider or heavier trays. 3.

Adjustable and Tool-

Free Systems

Systems like Griplock® offer inverted “Y” cables and tool-free adjustable grippers, allowing quick height adjustment of each suspension point without tools. These are compatible with wire mesh, ladder, trough, channel, and solid-bottom trays. 4.

Wire Basket Tray Suspension

Specific suspension hangers for wire basket trays can support rods up to M10 and are suitable for lengths of 100mm x 55mm baskets, providing secure support while complying with regulations such as F-gas restrictions in the EU.

Installation Considerations

Number of Rods: Use multiple rods for wider trays or heavier loads to distribute weight evenly and prevent sagging. Support Span: Place supports so that splice joints fall between support points, and ensure the span does not exceed the straight section length of the tray. Height Adjustment: Adjustable systems allow precise leveling of trays, which is critical for cable management and maintaining proper slope for drainage in some installations.

Material and Protection: Steel rods with protective coatings (e.g., electro-zinc plating) are common for durability and corrosion resistance.

Summary

For effective cable tray suspension: Choose the rod type based on tray type (mesh, ladder, wire basket) and load requirements. Consider single or multiple rods depending on tray width and weight. Use adjustable or tool-free systems for faster installation and precise leveling.

Ensure compliance with local regulations and material standards for safety and longevity. By selecting the appropriate suspension rods and hangers, you can achieve a secure, efficient, and code-compliant cable tray installation.