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The load-bearing capacity of pin-lock square trusses has no fixed standard. In fact, it is influenced by a variety of factors, including material, dimensions, structural design, and installation method.The load-bearing range varies greatly among different products and must be judged based on specific product parameters.Premium Pin-Lock Square Truss  The following is a detailed explanation from three aspects: core influencing factors, common load-bearing ranges, and precautions:

I. Core Factors Affecting Load-Bearing Capacity

Material: Determines the Basic Load-Bearing Upper Limit

The mainstream materials of pin-lock square trusses Heavy-Duty Square Truss System  are aluminum alloy and steel , with significant differences in their load-bearing capacities:

Aluminum alloy trusses: Light in weight and strong in rust resistance, Versatile Pin-Lock Truss Design they are suitable for scenarios such as stages and exhibitions that require "lightweight + frequent assembly". The vertical load-bearing capacity of a single standard 3-meter section is usually 500-2000kg .

Steel trusses: Heavy in weight and higher in strength, they are suitable for industrial support, heavy equipment suspension and other scenarios. The vertical load-bearing capacity of a single standard 3-meter section can reach 1000-5000kg, but corrosion issues must be considered Durable Square Truss Series.

Span and Support Method: Affect the Actual Load-Bearing Efficiency

Even for trusses of the same specification, the larger the span, the significantly lower the load-bearing capacity (because the truss will generate greater bending stress):

For example: A 100mm×100mm aluminum alloy truss has a vertical load-bearing capacity of approximately 1500kg when the span is 3 meters; if the span is increased to 6 meters, Square Truss the load-bearing capacity may drop to 500-800kg.

The support method also affects the load-bearing capacity. In the case of top suspension, the total tension of the truss's own weight plus the load must be considered additionally, Aluminum Square Truss System and the load-bearing capacity is usually 70%-80% of that under vertical support.

Pin-Lock Structure: Determines the Connection Stability

The "pin precision" and "lock strength" of the pin-lock type affect the connection stability between truss sections: If the pin is made of high-strength steel and the lock is free from deformation, it can ensure no additional stress loss at the connection, and the load-bearing capacity will be closer to the theoretical value; Square Truss for Stage Lighting if the pin-lock is loose or worn, the load-bearing capacity may decrease by more than 30%, and even pose safety risks.

II. Common Load-Bearing Reference Ranges for Different Scenarios

In different application scenarios, the actual load-bearing requirements and product choices for trusses vary. The following are references for typical scenarios:

Exhibitions / small-scale events: Heavy-Duty Square Truss

Square Truss Rigging Ha50-100mm aluminum alloy trusses are mostly used, with a single-section load-bearing capacity of 500-1500kg. They mainly bear the weight of background boards, small LED screens , and light spotlights .

Medium-sized stages / concerts: 100-150mm aluminum alloy trusses are mostly used, with a single-section load-bearing capacity of 1000-2500kg. They can bear the weight of medium-sized LED screens , professional stage lighting, and audio equipment.

Industrial / heavy-duty scenarios: Steel trusses or aluminum alloy trusses with a size of over 200mm are mostly used, with a single-section load-bearing capacity of 2000-5000kg. They're often Square Truss for Event Stages used to hang up heavy machinery, big billboards, industrial pipes, and stuff like that.