Arbitrary angle of horizontal bend in cable tray

A horizontal arbitrary angle bend allows a cable tray to change direction at any specified horizontal angle, facilitating smooth routing around obstacles while maintaining cable integrity.

Overview

A horizontal bend in a cable tray system is a fitting used to change the tray's direction along the horizontal plane without altering its elevation . Unlike standard 90° bends, arbitrary angle bends can be fabricated to any degree, providing flexibility to navigate around structural columns, machinery, or other obstacles in industrial and commercial installations . These bends are essential for maintaining continuous cable runs and ensuring efficient cable management.

Types and Materials

Horizontal bends can be manufactured for various cable tray types, including:

• Perforated trays: Provide ventilation and prevent cable overheating .
• Ladder-type trays: Support heavy or large bundles of cables.
• Wire mesh trays: Lightweight and flexible for complex routing.

Common materials include galvanized steel, stainless steel, and aluminum, chosen based on environmental conditions, load requirements, and corrosion resistance .

Design Considerations

When designing or selecting a horizontal arbitrary angle bend, consider:

• Bend angle: Can range from small angles (15°, 22.5°) for smooth transitions to sharper angles (45°, 60°) for tight spaces .
• Bending radius: Must comply with the minimum bending radius of the cables to prevent damage. Larger radii are preferred for thick or high-voltage cables .
• Horizontal run: The footprint of the bend on the floor or ceiling plan, which affects space planning .
• Offset calculation: Tools and multipliers can help determine the exact length of straight tray sections needed to connect bends and maintain proper alignment .

Installation and Usage

• Fastening: Horizontal bends come with appropriate mounting hardware for secure installation .
• Maintenance: Perforated designs allow airflow and easy inspection of cables .
• Customization: Bends can be fabricated to any width, depth, or length to match the tray system and site requirements .

Practical Applications

Horizontal arbitrary angle bends are widely used in:

• Industrial plants to navigate around machinery.
• Commercial buildings to avoid structural columns.
• Electrical rooms where space is limited and precise routing is required.

By using these bends, cable tray systems maintain continuous cable flow, reduce stress on cables, and optimize space utilization while allowing for future expansions or modifications .