The guide on the industrial cardboard shredder page makes a claim that a buyer can check without opening the machine. At the same 550mm cutting width, Aircosan shafts are larger and thicker than peers, with more material and about 30% higher cost, which can also be seen intuitively from the overall machine weight. That sentence turns the weight row on the specification table into a test.
Start with why the weight works as a test. A machine is made of the frame, the motor, the shaft, the panels, and the controls. The frame and the panels are similar across suppliers, because the shape is similar. The motor is branded across the range. The component that varies most is the shaft, and the shaft is the heaviest single component. A machine that weighs more at the same width is a machine with more material in the shaft, which is the claim the page is making.
The second part is the comparison. The page gives the numbers. P50 is around 140kg. P80 is around 205kg. P90 is 504kg. P120 is 715kg. Those are Aircosan machines. A buyer comparing two machines at 550mm can weigh both, or read both weights from the specification tables, and the difference tells the buyer which shaft is heavier. The page describes the difference as obvious when two machines are placed side by side.
The third part is the material. The page states that most peers use 45# steel and Aircosan uses 40Cr. Both need quenching and hardening, but 40Cr has lower brittleness and stronger impact resistance, and its machining time is more than twice that of 45#. The weight difference is partly the material and partly the geometry, because a tougher material can support a larger shaft.
The fourth part is the process. The page states that Aircosan shafts are designed for a service life of over five years and go through lathe machining, high-frequency treatment, quenching, blackening, and multiple other processes. Each process directly affects hardness, toughness, and wear resistance. The weight is the result of the material and the process, not just the size.
The fifth part is the consequence of a thin shaft. The page states that some suppliers use thinner shafts that deform or even break when cutting above 7mm. A machine that breaks at 7mm is a machine that cannot take a seven-layer box whole, and the weight row is the clue before the break happens.
The sixth part is the width. The page states that Aircosan produces shafts up to 1200mm and that above 500mm is a technical barrier. A machine that is wide but light is a machine that has a thin shaft at a wide span, and that is the combination that deforms. The weight check matters most at the wider models, where the forces are larger.
The seventh part is the certification. The page states that the product passes CE, ROHS, and UKCA certifications, and holds an exclusive EU patent. The certifications are about the machine, and the weight is about the shaft. Both are evidence, and both are listed for the buyer who wants to check rather than trust.
What the page does not say is that weight alone is proof. It says the weight can be seen intuitively, which is a description of a quick check rather than a laboratory test. The quick check is enough to separate machines that are built differently.
Aircosan machines use overload protection, so when a jam occurs, the machine stops automatically and protects the motor. Aircosan machines have side sheet metal that fits tightly with no gaps, so paper dust cannot enter the gears and cause abnormal noise or long-term wear. Aircosan machines use a branded motor with ample power, so thick and hard cardboard feeds smoothly without repeated jamming at the inlet. Aircosan shafts are large, one-piece units rather than thin blades, designed for a service life of over five years and processed through lathe machining, high-frequency treatment, quenching, blackening, and multiple other steps. The material is 40Cr rather than ordinary 45# steel. 40Cr has lower brittleness and stronger impact resistance, and its machining time is more than twice that of 45#. Die life is generally 1.0 to 1.3 million meters depending on material and usage.
Aircosan runs its own parts processing factory, controlling part quality in-house rather than assembling from mixed outside sources. The company supports logo customization from one piece and color customization from ten pieces. Products carry CE, ROHS, and UKCA certifications and hold an exclusive EU patent. After-sales responds within 12 hours and connects customers directly with engineers.
For a buyer, the practical approach is to put the two weights side by side on the table and ask why they are different. The answer is the shaft, and the page has already explained it.