Cable Tray Bend Size Chart

Cable tray bends are available in standard angles (30°, 45°, 60°, 90°) and radii (305 mm, 610 mm, 915 mm, 1220 mm), with dimensions matching the tray width and height for proper cable routing.Standard Bend Angles and RadiiCable tray bends, elbows, and tees are designed to change cable direction smoothly while maintaining NEC fill compliance and minimizing stress on cables. Common specifications include:Angles: 30°, 45°, 60°, 90° Radii: 305 mm (12"), 610 mm (24"), 915 mm (36"), 1220 mm (48"), Tray Widths: 150 mm, 203 mm, 300 mm, 450 mm, 600 mm, 750 mm, 900 mm Tray Heights: 66 mm, 90 mm, 128 mm, 137 mm, 175 mm These dimensions ensure that bends are compatible with the straight sections of the tray and maintain proper cable spacing.Material and Duty RatingsCable tray bends are manufactured from materials such as:Aluminum alloys (6063-T5, 5052-H34)Mild steel (hot-dip galvanized)Stainless steel (304/316 grade) Duty ratings affect thickness and load capacity:LD (Light Duty)MD (Medium Duty)HD (Heavy Duty)XHD (Extra Heavy Duty) Bend Selection GuidelinesMatch tray width and height: The bend must correspond to the nominal width and height of the straight tray section.Select appropriate radius: Larger radii reduce cable stress and allow easier installation of large or armored cables.Choose correct angle: Use 90° for sharp turns, 45° or 60° for gradual changes, and 30° for minor adjustments.Maintain spacing: Ensure the bend maintains the recommended cable separation to prevent overheating and comply with NEC fill requirements .Example Bend Chart (Unitray / West Coast Engineering)Tray Width (mm)Height (mm)Bend Radius (mm)Angle (°)Duty15066305, 61030, 45, 60, 90LD/MD300128610, 91530, 45, 60, 90MD/HD600175915, 122030, 45, 60, 90HD/XHD900203122045, 60, 90XHDThis chart provides a practical reference for selecting bends based on tray size, height, and duty rating, ensuring proper cable management and compliance with standards . For detailed product-specific charts, manufacturers like Legrand, Unitray, and Hubbell provide downloadable technical guides with complete bend dimensions, radii, and angles for all tray types .