The specification sheet for an industrial cardboard shredder lists cutting width, speed, power, and weight. Each number is clear. But the component that decides how long the machine lasts, how thick it can cut, and how wide it can go is often the one that does not appear prominently on the sheet. It is the cutter shaft.
The product page makes the point directly. Many buyers look at price and appearance first. What really determines how thick a machine can cut, how wide it can go, and how long it lasts is the cutter shaft. If the shaft is not up to the job, a cheaper machine is no bargain. It breaks blades on thick cardboard, deforms, and needs frequent repairs. The overall cost ends up higher.
Start with width. The wider the shaft, the more complex the forces acting on it, and the easier it deforms. Producing shafts above 500mm is a genuine technical barrier. Reaching 1200mm is a combined test of machining precision, material performance, and process control. Aircosan's floor-standing industrial range starts at 550mm and goes up to 900mm on the P90 and 1200mm on the P120. Being able to produce this width is direct proof of hard engineering capability.
Then there is thickness. At the same 550mm cutting width, Aircosan shafts use a widened and thickened design with more material, costing about 30% more than peers. Place two machines side by side and the difference in shaft thickness and volume is obvious. A more intuitive way to judge is overall machine weight. A heavier machine usually means a more substantial shaft. Some suppliers use thinner shafts that deform or even break above 7mm.
Material is the third factor. Most peers use 45# steel. Aircosan uses 40Cr. Both materials lack sufficient hardness on their own and need quenching and hardening, but 40Cr has lower brittleness and stronger impact resistance, and its machining time is more than twice that of 45#. Machining costs go up, but blade breakage is essentially solved. For a business cutting cardboard every day, stability matters more than anything.
Process is the fourth factor. 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 steps. Each step affects hardness, toughness, and wear resistance. The process is complex, which raises cost, but the shaft lasts longer, the machine runs more stably over time, and maintenance and downtime costs are lower.
There is a detail that does not appear on the specification sheet but matters in daily use. 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. Some machines on the market have gaps near the gears, and burrs and paper dust enter easily, causing abnormal noise and, over time, wearing down internal structures.
Motor and overload protection round out the picture. Aircosan machines use a branded motor with ample power, so thick and hard cardboard feeds smoothly without repeated jamming at the inlet. Overload protection automatically cuts power and stops the machine when a jam occurs, protecting the motor. Many machines on the market lack this, and a jam can burn out a motor while the shaft is stopped.
The logic for choosing an industrial model is not about comparing prices. It is about comparing shaft size, material, process, and overall machine weight. The product page puts it plainly. You may not get the cheapest price on the market, but you get more cost-effective quality, more cooperative supply, and faster after-sales response.
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 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.
Before ordering an industrial model, confirm three things. How many cartons you process per day. What the largest common carton width is. What the thickest board is. Once those three numbers are on paper, the choice between 550mm, 900mm, and 1200mm becomes straightforward.