Requirements for the thickness of cable tray hangers

Cable tray hanger thickness typically ranges from 2 mm to 6 mm for steel hangers, depending on tray size, load, and environmental conditions.

Typical Thickness and Material Considerations

Cable tray hangers are usually made from steel or stainless steel, with thickness selected to safely support the weight of the cable tray and its contents. Standard thicknesses for steel hangers generally range from 2 mm for light-duty trays (small widths and low cable loads) up to 6 mm for heavy-duty or wide trays used in industrial or utility installations. Stainless steel hangers may be slightly thinner due to higher material strength, but corrosion protection and load requirements must be considered.

Galvanized steel hangers are often used in environments prone to moisture or chemical exposure, with the zinc coating thickness contributing to overall durability.

Factors Affecting Hanger Thickness

Tray Size and Load: Wider trays or those carrying heavy power cables require thicker hangers to prevent bending or deflection. Span Between Supports: Longer spans between hangers increase bending stress, necessitating thicker or reinforced hangers. Environmental Conditions: Corrosive or outdoor environments may require thicker or coated hangers to maintain structural integrity over time.

Standards Compliance: Hangers should comply with DIN EN 61537, BS 6946, or equivalent standards, which define mechanical load requirements and safety factors.

Practical Recommendations

For light-duty installations (instrumentation or control cables), a 2–3 mm steel hanger is usually sufficient. For medium-duty installations (general power distribution), 3–4 mm hangers are recommended. For heavy-duty or industrial installations (wide trays, high cable density), 5–6 mm hangers or reinforced designs are preferred.

Always verify the manufacturer's specifications and consider short-term and long-term loads, including potential short-circuit forces. By selecting the appropriate hanger thickness based on these factors, you ensure structural safety, compliance with standards, and longevity of the cable tray system.