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Cable trays should have 45-degree horizontal bends

Fiber and communications infrastructure knowledge brief Published 24 Mar 2026

Use this reference to prepare product questions for CJC FIBRE. Check interfaces, capacity, protection and installation requirements against the current product documentation.

A 45° horizontal bend allows cable trays to change direction smoothly by 45 degrees, ensuring secure cable support and efficient routing.

Purpose and Benefits

A 45° horizontal bend is used to redirect cable trays horizontally without abrupt turns, which helps reduce tension and potential damage to cables during installation and operation. These bends are particularly useful in navigating around structural obstacles, optimizing space, and maintaining organized cable management in commercial and industrial settings. They also preserve the structural integrity of the cable tray system while providing a stable support platform for cables.

Design and Compatibility

These bends are available in various materials such as aluminum or galvanized steel, offering durability and corrosion resistance. They are designed to fit different NEMA cable tray classes: Class 1: NEMA 12B and 12C, with 1 1/8" side rail flanges and 4-hole splice plates. Class 2: NEMA 20A, 20B, 20C, with 2" side rail flanges and 4-hole splice plates.

Class 3: NEMA classes exceeding 20C, with 2 3/8" side rail flanges and 8-hole splice plates. Class 4: Heavy-duty systems with 2 3/4" side rail flanges and 8-hole splice plates. Horizontal bends can be left or right versions and are often pre-fabricated to simplify installation.

They are available in standard angles like 30°, 45°, 60°, and 90° to meet specific routing requirements.

Installation Considerations

When installing a 45° horizontal bend: Ensure the bend aligns with the cable tray sections for a smooth directional change. Use appropriate splice plates and fasteners according to the tray class to maintain structural stability. Consider the bend radius to prevent excessive stress on cables, especially for sensitive or high-voltage wiring.

Applications45° horizontal bends are widely used in: Industrial plants and factoriesCommercial buildings with complex cable routingData centers and electrical rooms requiring organized cable management These bends enhance safety, longevity, and efficiency of cable tray systems while allowing flexible routing around obstacles.

Cable trays should have 45-degree horizontal bends - CJC FIBRE CONSULTANTS [PDF]

Cable trays should have 45-degree horizontal bends

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Technical note

This reference is intended for preliminary fiber and communications infrastructure research. Optical interface, fiber type, port or core capacity, electrical input and output, enclosure protection, cooling, installation limits and applicable standards must be verified for the specific project.

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