Cable tray 90-degree bend construction method

A 90-degree bend in a cable tray can be achieved using pre-fabricated elbows, bending machines, or manual fabrication with careful measurement and cutting.Steel Cable Tray BendingUsing a bending machine:Mark the centerline of the intended 90° bend on the tray.Insert the tray into a cable tray bending machine or use bending bars to gradually form the bend along the centerline .Ensure corrugations or flanges are evenly distributed on both sides of the centerline to maintain structural integrity .Remove any burrs or sharp edges after bending to prevent cable damage . Manual fabrication:For steel trays without a machine, you can create a 90° bend by cutting isosceles triangles along the bend line and folding the tray to form two 45° bends, which combine into a 90° elbow .Use a metal bar or form block to guide the bend and maintain a smooth radius .Check dimensions carefully to ensure the finished elbow aligns with the intended routing path .PVC Cable Tray BendingCold-bending method:Measure and mark the centerline for the bend, transferring marks to both tray edges for symmetry .Cut relief slots along the inner flange to allow compression without cracking, leaving the outer flange intact for strength .Slowly bend the tray along the centerline using a form block or corner edge to guide a smooth radius . Mitered elbow method:Cut two opposing 45° ends where the bend will join.Bond or fasten the ends to form a precise 90° corner .General TipsAlways wear safety glasses and gloves when cutting or bending trays .Verify tray dimensions and bend angles before final installation to ensure proper cable routing .Pre-fabricated 90° elbows are available and can save time, but on-site fabrication allows flexibility for custom layouts .For steel trays, using a crimping tool can help secure bends and maintain structural strength . By following these techniques, you can achieve accurate and safe 90-degree bends in both steel and PVC cable trays, ensuring proper cable management and installation quality.