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Data for 90-degree bends in cable trays

Fiber and communications infrastructure knowledge brief Published 02 Sep 2020

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

90-degree cable tray bends are available in light, medium, and heavy duty, with widths from 50mm to 900mm, various materials, and compliance with industry standards like NEMA VE-1 and IEC 61537.

Dimensions and Duty Ratings

Widths: 50mm to 900mm or more, depending on manufacturer and application requirements. Flange Heights: Typically 50mm to 100mm for medium duty trays. Thickness: Standard thickness ranges from 1mm to 2mm, with 1.

5mm common for medium duty. Bend Radius: Some manufacturers, like ASP, provide a 24-inch bend radius for ease of cable installation.

Material and Finish Options

Mild Steel: Pre-galvanized (PG) or hot-dip galvanized (HDG) after manufacture. Stainless Steel: Grade 1. 4404 (316L) available on request for corrosion resistance.

Perforated Designs: Allow air circulation, water drainage, and easier cable pulling. Types of 90-Degree BendsFlat Bends: Standard 90-degree bends for light, medium, and heavy duty trays. Adjustable Bends: Configurable to 30°, 45°, 60°, 75°, and 90° for medium and heavy duty trays up to 300mm wide.

Turn Bends: Designed for coaxial or high-density cable installations with specific bend radii.

Standards and Compliance

Industry Standards: NEMA VE-1, IEC 61537 for load-bearing capacity, fire resistance, and durability. Testing and Certification: Some manufacturers ensure compliance with BASEC and Construction Products Regulation (CPR) for quality and safety.

Installation and Practical Considerations

Accessibility: Designed for easy cable access for troubleshooting, adding, or replacing cables. Heat Management: Perforated or ventilated designs improve heat dissipation in high-density installations like data centers. Covers: Closed or ventilated covers are available for 90-degree bends to protect cables while maintaining airflow.

These specifications allow engineers and installers to select the appropriate 90-degree bend based on load requirements, cable bundle size, environmental conditions, and compliance needs.

Data for 90-degree bends in cable trays - CJC FIBRE CONSULTANTS [PDF]

Data for 90-degree bends in cable trays

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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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