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Is Your 600kg Cart *Actually* Rated for 600kg? Verifying Load Capacity

2025-11-14 11:24

Any 2 tier cart on wheels can have "600kg" printed in its specs. But in a real-world industrial environment, that number is meaningless without engineering to back it up. A "value" cart failing under a 600kg dynamic load isn't an inconvenience; it's a catastrophic safety failure, risking product and personnel.

The "Static" vs. "Dynamic" Load Deception

The most common deception in industrial specs is the "static load" rating. This is the weight a cart can hold while sitting perfectly still. This is useless. A cart's *true* test is its "dynamic load" capacity: the ability to safely handle 600kg while rolling, stopping, starting, and hitting uneven floor joints. This is where weak designs fail, welds crack, and frames twist.

Beyond a Guess: How to Verify a Cart's Strength

A true industrial-grade capacity isn't a guess; it's a result of deliberate engineering. Here’s what to look for as verifiable proof.

1. The Foundation: The Right Steel

A 600kg load cannot be supported by thin, bent sheet metal. The foundation must be a fully welded frame made from structural-grade steel. Q235 carbon steel, used in applications like 30x30x1.5mm rectangular tubing, provides the essential rigidity and impact resistance to prevent flexing and weld failure under dynamic stress.

2. The Proof: Finite Element Analysis (FEA)

This is how modern engineering separates fact from fiction. Before a single piece of steel is cut, the cart's design is loaded in a simulation program (like ANSYS). Engineers apply a 600kg distributed load to the digital model to "see" how stress is distributed. This process verifies that the maximum stress on the frame and welds stays safely below the material's yield strength. It proves the design is sound *before* it gets to your facility.

3. The Contact Points: The Wheels

The entire 600kg load is concentrated on four small points. The two tier trolley wheels are a critical component, not an afterthought. High-strength, quiet Polyurethane (PU) casters are essential. They are designed to roll smoothly under heavy loads without developing flat spots (like plastic) or shredding (like cheap rubber).

two tier cart on wheels technical details grid

Why This Verification Matters to You

When you see a 600kg load capacity that is verified by FEA testing and backed by Q235 steel construction, it’s no longer just a marketing claim. It is a verifiable commitment to safety, longevity, and performance. It's the confidence to know that the tool you give your team will not fail them when they need it most.

Talk With An Expert


Frequently Asked Questions

Q: What is ANSYS or FEA testing?

A: Finite Element Analysis (FEA) is a computerized method for predicting how a product reacts to real-world forces, like a heavy load. It allows engineers to digitally test the cart's design to ensure it can safely handle 600kg without bending or breaking.

Q: What's the difference between static load and dynamic load?

A: Static load is the weight a cart can hold when it's not moving. Dynamic load is the weight it can safely handle while in motion (rolling, stopping, turning), which is the only rating that matters for a cart.

Q: Can the pull-out shelf also hold 300kg?

A: Yes. A properly engineered design, often one that includes auxiliary casters, is also put through FEA testing to ensure the pull-out layer can safely support its 300kg rated load, even when fully extended.

Q: Why is Q235 steel a better choice?

A: Q235 is a strong, reliable structural carbon steel. Unlike cheaper, lower-grade metals, it has predictable strength and weldability, making it the standard for building robust industrial equipment that won't fail.

Q: Do the two tier trolley wheels really matter for the load rating?

A: Absolutely. The total load capacity is limited by the weakest component. A cart with a 600kg frame is useless if it has 100kg-rated casters. High-strength Polyurethane (PU) wheels are essential to match the frame's capacity.

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