Left and right bends in cable trays are fabricated by cutting, bending, and rejoining tray sections to create smooth directional changes, ensuring safe and organized cable routing.

Tools and Materials Required

• Galvanized sheet metal (typically 1.6 mm or as per design)
• Measuring tape or scale, marker, or scriber
• Angle grinder or metal shear for cutting
• Drill machine for holes
• Rivets, nuts, and bolts for assembly
• Manual or hydraulic press brake for bending
• Welding machine (optional for reinforcement)
• Safety gear: gloves, eye protection, and PPE

Fabrication Steps

1. Marking the Bend Angle: Determine the required angle (commonly 45° or 90°). On a flat tray section, mark the centerline and sides, then divide the curve into equal segments to form a smooth radius .
2. Cutting the Side Walls: Make triangular or rectangular cuts on the side walls where the bend is needed. These cuts allow the tray to fold without deforming the structure .
3. Forming the Bend: Gradually bend each segment using a press brake or manual bender. Ensure uniform bending to maintain cable support and tray integrity .
4. Rejoining the Side Walls: After bending, rejoin the cut sections using welding or bolting/riveting with metal strips for reinforcement .
5. Finishing: Remove any burrs or sharp edges, and apply protective coatings if necessary to prevent corrosion .

Horizontal Bends and Elbows

• Horizontal bends allow cables to navigate corners and obstructions without compromising performance or safety .
• Pre-fabricated left and right horizontal bends are available in materials like aluminum, stainless steel, and galvanized steel, compatible with ladder, perforated, and solid-bottom trays .
• For wire mesh cable trays, bends can be made on-site using bolt cutters, with protective zinc layers maintained and rubber caps applied to cut ends .

Best Practices

• Always follow safety guidelines: wear Kevlar gloves, eye protection, and other PPE when cutting or bending metal .
• Ensure smooth transitions to prevent cable damage and maintain proper bend radius.
• Use pre-engineered bends when possible for efficiency and consistency, especially in commercial or industrial installations .
• Verify compatibility with the specific cable tray system and environmental conditions before fabrication . By following these steps and best practices, left and right bends can be fabricated efficiently, ensuring a safe, organized, and durable cable management system.