Do cable tray bends need hangers

Yes, cable tray bends require hangers or supports to maintain stability, prevent sagging, and ensure safe cable routing.Importance of Hangers for BendsCable tray bends, whether horizontal or vertical, must be supported with hangers or other support elements to handle the mechanical load of the cables and the tray itself . Unsupported bends can lead to sagging, misalignment, or excessive stress on the tray and cables, potentially causing damage or safety hazards . Hangers provide strain relief and maintain the designed routing path, especially in long runs or heavily loaded systems.Types of SupportsCeiling or suspended hangers: Ideal for overhead cable trays, adjustable to accommodate bends and changes in direction .Wall-mounted brackets: Used when trays run along walls and need lateral support at bends .Floor-mounted supports: Applied in industrial areas where ceiling or wall mounting is not feasible .Center supports or intermediate hangers: Placed near bends to prevent deflection and maintain structural integrity .Spacing ConsiderationsThe spacing of hangers around bends is critical. It depends on the tray type, cable weight, and bend radius. Standards such as BS EN 61537 recommend that supports be positioned close enough to prevent sagging and to maintain the tray's load-bearing capacity . Typically, bends require closer hanger spacing than straight runs to counteract the additional stress at the change of direction.Practical TipsAlways consult the manufacturer's guidelines for specific tray and fitting types.Ensure that hangers are rated for the combined weight of the tray and cables.Use modular support systems like Unistrut for flexibility in adjusting hanger positions at bends .Avoid overloading the tray at bends, as this can compromise both the tray and cable integrity . In summary, cable tray bends should always be supported with hangers or equivalent supports to ensure mechanical stability, safety, and compliance with installation standards. Properly spaced and rated hangers prevent sagging, maintain alignment, and protect the cables from undue stress.