Making elbows using cable trays

Cable tray elbows are created by cutting, bending, and assembling sections of tray to achieve the desired angle, typically 45° or 90°, using appropriate tools and techniques.

Types of Elbows

Cable tray elbows can be horizontal, vertical, or wire mesh bends, and common angles include 45° and 90°. The type of elbow depends on the routing requirements and the tray material, such as galvanized steel, stainless steel, or wire mesh .

Tools and Materials

• Metal trays: angle grinder, hacksaw, measuring tape, marker, set square or protractor, drill, nuts, bolts, washers, cold galvanizing spray for rust protection .
• Wire mesh trays: strong forceps or pliers, plastic caps, and connecting accessories .
• Optional: shearing machine and bending machine for larger or professional metal tray bends, welding equipment for assembly .

Step-by-Step Process for Metal Cable Tray Elbows

1. Determine the Angle and Radius: Decide the elbow angle (e.g., 90°) and the required bend radius .
2. Mark the Cuts: For a 90° elbow, mark two 45° cuts on the tray flanges using a measuring tape and protractor .
3. Cut the Tray: Use an angle grinder or hacksaw to cut along the marked lines. For the base, remove V-shaped sections to allow the sides to close together .
4. Bend the Tray: Carefully bend the tray along the cut lines to form the elbow. For larger trays, a bending machine may be used .
5. Assemble and Fasten: Join the bent sections using bolts, nuts, or welding if required. Ensure alignment and structural integrity .
6. Surface Treatment and Inspection: Apply rust protection or paint, and check dimensions, angles, and strength to meet standards .

Step-by-Step Process for Wire Mesh Cable Tray Elbows

1. Cut the Tray: Use strong forceps to remove the necessary section of the wire mesh .
2. Bend Manually: Concave the tray into the desired shape, such as a right-angle bend or tee .
3. Install Protective Caps: Place plastic caps on cut edges to prevent injury and protect cables .
4. Connect Sections: Use connecting accessories to join the bent section to the rest of the tray .

Safety and Quality Considerations

• Always wear protective gear when cutting or bending metal trays.
• Ensure proper alignment and secure fastening to maintain structural integrity.
• Follow industry standards for dimensions, angles, and load-bearing capacity .
• For welded elbows, verify weld quality and allow for proper cooling before installation . By following these steps, you can generate precise and durable elbows in both metal and wire mesh cable trays, ensuring safe and efficient cable routing.