Fabrication of Vertical Cable Tray Fixing Brackets

Vertical cable tray mounting brackets are fabricated from steel, stainless steel, or GRP, designed to support cable trays securely while accommodating structural and load requirements.

Materials and Design

Vertical mounting brackets are typically made from steel, stainless steel, or glass-fiber reinforced polyester (GRP) depending on environmental conditions and load requirements. Steel brackets are often hot-dip galvanized or epoxy-coated for corrosion protection, while stainless steel (AISI 316Ti) is used in highly corrosive or outdoor environments.

GR

P brackets offer lightweight, non-conductive alternatives suitable for chemical or moisture-prone areas. Brackets can be U-profile, C-profile, Z-profile, or custom shapes, with lengths ranging from 110 mm to over 1500 mm depending on the tray size and mounting height.

Load and Structural Considerations

Brackets must be designed to support the dead weight of the cable tray and cables, including dynamic loads during installation or maintenance. Standard load capacities range from 1. 2 kN to 2.

5 kN for medium to heavy-duty brackets. The spacing of brackets is critical: vertical changes in direction or height must be supported within 150 mm of joints or bends to prevent sagging or stress on the tray. For ceiling-mounted installations, threaded rods (M10 or larger) or cantilever brackets are used to transfer loads to the structural ceiling or wall.

Fabrication and Installation

Cutting and Shaping: Brackets are cut to the required length and shaped into the desired profile (U, C, Z) using metal fabrication techniques such as bending, punching, or welding. Surface Treatment: Steel brackets are galvanized or epoxy-coated to prevent corrosion; stainless steel may be passivated for additional protection. Attachment Points: Brackets include pre-drilled holes or slots for mounting to walls, ceilings, or threaded rods.

For wall mounting, adapters like KAWG 12 or WAWG 12 may be used to anchor brackets at 45° angles if needed. Tray Connection: Cable trays are fastened to brackets using mushroom head bolts or compatible fasteners, ensuring secure attachment and alignment. Adjustments: On-site adjustments may be required to accommodate vertical bends, T-pieces, or height changes, using cantilever or pendant brackets for flexibility.

Standards and Safety

Fabrication and installation should comply with DIN EN 61537 for cable support systems, ensuring mechanical strength, corrosion resistance, and proper cable separation. Brackets must also meet local building codes and fire safety regulations, particularly when supporting vertical runs in industrial or commercial buildings. Proper installation prevents overloading, sagging, or misalignment, which could compromise cable integrity or safety.

Practical Tips

Use threaded rods or cantilever brackets for vertical runs to allow height adjustments. Ensure bracket spacing and load capacity match the cable tray type and cable weight. Apply corrosion-resistant coatings in humid or outdoor environments.

Always follow manufacturer guidelines for fasteners, adapters, and tray compatibility. By following these guidelines, vertical cable tray mounting brackets can be fabricated and installed to provide durable, safe, and adjustable support for cable management systems in industrial and commercial applications.