Cable tray cantilever support

Cantilever supports are wall- or structure-mounted brackets designed to hold cable trays horizontally, providing strong, adjustable support for various tray widths and loads.

Overview

Cantilever supports are used to secure cable trays along walls, columns, or other vertical structures, allowing the trays to extend horizontally without additional vertical supports. They are ideal for service corridors, industrial facilities, data centers, and commercial buildings where floor space is limited or overhead clearance is required .

Types and Configurations

• Wall-Mount Cantilever Brackets: These brackets attach directly to walls and support cable trays of various widths, typically ranging from 4" to 24" wide. They are suitable for heavy loads and horizontal runs .
• Unistrut Cantilever Brackets (e.g., P2580): Designed for heavier loads and longer spans, these brackets attach to a 1-5/8" wide channel and can support piping, conduit, or cable trays. They allow attachment on both top and bottom surfaces for flexibility .
• Cantilever Arms: These are specialist brackets that can be fixed with one or two bolts and used with open faces at the top, bottom, left, or right. Some designs provide extra support for horizontal runs of cable trays or ladders .

Materials and Finishes

Cantilever supports are typically made from steel conforming to ASTM standards (A1011, A36, A575, etc.) and may have zinc plating or chrome finishes for corrosion resistance. Special metals are available for environments requiring higher durability or chemical resistance .

Installation Considerations

• Spacing: It is recommended to provide support at every 5 feet for wire mesh trays to maintain structural integrity .
• Load Capacity: Ensure the bracket and channel system can handle the weight of the cable tray and cables, following relevant standards such as the American Standard Code for Pressure Piping when used for mechanical supports .
• Orientation: Cantilever brackets can be installed with the open face on top, bottom, or sides depending on the tray type and routing requirements .
• Compatibility: Verify that the bracket width matches the cable tray width (e.g., 4", 6", 8", 12", 24") and that the mounting surface can support the load .

Applications

Cantilever supports are widely used in:

• Data centers and network closets for organized cable routing
• Industrial facilities for heavy-duty cable trays
• Commercial buildings where wall-mounted horizontal runs are preferred
• Areas with limited floor space or where ceiling mounting is impractical By selecting the appropriate cantilever bracket type, material, and spacing, installers can ensure safe, durable, and efficient cable tray support for a variety of applications.