Correct Method for Using Cable Tray Bends

Cable tray bends allow you to change the direction of cable runs safely and efficiently, either using pre-fabricated fittings or by fabricating bends on-site.

Types of Cable Tray Bends

Cable tray bends are used to navigate obstacles or change the direction of cable runs. Common types include: 90-degree internal and external bends for sharp turns. 45-degree bends for gradual direction changes.

Tees and crosses for branching cable runs. Risers for vertical transitions between levels.

Using Pre-

Fabricated BendsPre-fabricated bends are manufactured to standard angles and sizes. To use them: Select the correct bend for your tray type and size. Align the bend with the existing tray section.

Secure with splice plates and bolts, ensuring smooth edges face inward to prevent cable damage. Check the bend radius to ensure it meets the minimum bend radius for the cables being installed. Fabricating Bends On-SiteIf pre-fabricated bends are unavailable, you can create bends using tools: Inspect and clean the tray to remove dirt or defects before bending.

Mark the bend location and desired angle. Use a cable tray bender or a metal bar for steel trays to form the bend gradually. For wire mesh trays, a bolt cutter can be used to cut and bend sections, with rubber caps to protect cut ends.

Ensure smooth edges and maintain the structural integrity of the tray.

Installation Tips

Always support the tray at intervals to prevent sagging, especially near bends. Use pairs of riser links for vertical bends to maintain stability. Maintain proper bend radius to avoid damaging cables and ensure easy cable pulling.

For complex configurations, such as tees or crosses, cut and bend side walls as needed and secure with brackets. By following these steps, cable tray bends can be installed safely, maintaining cable protection and system integrity while allowing flexible routing around obstacles.