Recommended 45-degree bends for cable trays

45-degree bends in cable trays include flat bends, adjustable bends, and elbow fittings, designed for horizontal or vertical directional changes while maintaining cable integrity.

Flat Bends

Flat bends are pre-fabricated 45-degree sections used to change the direction of cable trays horizontally or vertically. They are available for light, medium, and heavy-duty trays with widths ranging from 50mm to 900mm. Materials include mild steel (pre-galvanized or hot-dip galvanized) and stainless steel (grade 316L). Flat bends can also be supplied with closed or ventilated covers to protect cables and allow airflow .

Adjustable Bends

Adjustable bends offer flexibility for installations where precise angles are required. They can be configured to 30°, 45°, 60°, 75°, or 90°, making them suitable for medium and heavy-duty trays up to 300mm wide. This type allows installers to adapt the bend angle on-site, reducing the need for multiple pre-fabricated fittings .

Elbow Fittings

Elbow fittings are commonly used for 45-degree turns in cable tray systems, particularly in applications requiring frequent cleaning or washdown, such as food processing or industrial environments. These elbows are available in stainless steel (SS304) and are often supplied with top covers for protection. Ladder rack curved sections can also provide a vertical plane change using 45-degree elbows .

Key Considerations

• Duty Rating: Ensure the bend type matches the tray's load capacity (light, medium, or heavy-duty).
• Material: Choose based on environmental conditions (e.g., stainless steel for corrosion resistance).
• Bend Radius: Maintain proper bend radius to prevent cable damage, following NEC, IEC, or NEMA standards .
• Application: Flat bends are ideal for standard routing, adjustable bends for flexible layouts, and elbow fittings for specialized or washdown environments. By selecting the appropriate 45-degree bend type, installers can achieve smooth cable transitions, maintain structural integrity, and comply with safety standards.