Bending of large cable trays

Large cable trays are bent using specialized tools or manual techniques to create horizontal, vertical, or junction bends while maintaining cable safety and tray integrity.Types of BendsHorizontal Bends: Change the tray direction along a horizontal plane, typically between 30° and 90°, allowing the tray to navigate around walls or obstacles at the same elevation . Vertical Bends: Include inside and outside bends to move the tray up or down between levels, often used to route cables from ceiling-mounted trays to floor equipment . T-Junctions and Crosses: Allow the tray to split into multiple paths on the same plane, forming 90° junctions for branching cable routes .Bending TechniquesWire Mesh Cable Trays: These can be bent on-site using bolt cutters or manual tools. Bolt cutters can cut and slightly deform the tray to create bends, while rubber caps protect cut ends . Steel or Solid Trays: Bends can be made using a cable tray bending machine, crimping tools, or even a sturdy metal bar for smaller adjustments. The process involves gradually lifting and shaping the tray to the desired angle, ensuring smooth curves to prevent cable damage . Considerations:Maintain the minimum bend radius to avoid stressing cables .Provide support at bend points to preserve structural integrity .Avoid sharp edges; use protective covers or caps if cutting is involved .Pre-manufactured bends are available for standard angles, which can save time and ensure consistency .SummaryBending large cable trays requires understanding the type of tray, the desired bend, and the tools available. Wire mesh trays offer flexibility for on-site adjustments, while steel trays may require mechanical assistance. Proper bending ensures efficient cable routing, minimizes stress on cables, and maintains the tray's load-bearing capacity.