The FAQ on the industrial cardboard shredder page answers the noise question with a description rather than a number. Cardboard shredders are designed for busy packaging environments. Noise levels are controlled, suitable for warehouses and logistics distribution areas, allowing operators to work nearby without major disturbance. That answer is about the work environment, and the work environment is what the buyer should check.
Start with what the answer does not give. It does not give a decibel figure. A decibel figure would be measured at a specific distance, and the distance in a warehouse varies. A number at one meter is not the number at the bench, and the bench is where the operator stands. The page gives the description that matters, which is whether the operator can work nearby.
The second part is the sources of the sound. A shredder produces sound from three places. The motor and gearbox produce a steady hum. The cutting action produces a sharper sound in bursts. The cardboard moving through the feed area produces a softer sound that changes with the board thickness. The page describes the machine as using a branded motor with ample power, so thick and hard cardboard feeds smoothly without repeated jamming at the inlet. Smooth feeding produces a steadier sound, which is easier to tune out than the intermittent sound of a machine that jams.
The third part is the containment. The page states that side sheet metal fits tightly with no gaps, so paper dust cannot enter the gears and cause abnormal noise or long-term wear. That tight fit also contains the sound, which is why the description says controlled rather than quiet. The machine is not silent. It is controlled.
The fourth part is the duty cycle. A machine that runs continuously sounds different from a machine that runs in bursts. The page describes the industrial models as handling long continuous shifts in shipping centers and production workshops, and a machine that runs continuously produces a continuous sound. The description of no major disturbance is about a continuous sound at a level the operator can work through.
The fifth part is the placement. A machine next to a bench sounds different from a machine in a corner. The page describes the machine as designed to run next to the packing table, and the description of controlled noise is about that placement. A machine that is quiet enough for a separate room is not the same as a machine that is quiet enough for a bench.
The sixth part is the check. The practical method is to stand at the bench while the machine runs and listen for a minute. If the sound is a steady hum with a cutting rhythm, the machine is behaving as described. If the sound is a rattle or a scrape, the machine has a problem that the description does not cover, and the problem should be addressed before the machine is accepted.
The seventh part is the maintenance. The page states that daily maintenance is minimal, mainly keeping the feed area clean, regularly checking cutting components, and following standard cleaning guidelines. A machine that is maintained sounds different from a machine that is not, and the description of controlled noise assumes the maintenance is done.
What the page does not say is that the machine is silent. It says the noise is controlled and suitable for the environment, and the environment is where the machine sits.
Aircosan machines use overload protection, so when a jam occurs, the machine stops automatically and protects the motor. 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#. At the same 550mm width, Aircosan shafts are visibly larger and thicker than thinner competing units and cost about 30% more, which shows in the overall machine weight. 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 packing supervisor, the practical approach is to listen to the machine at the bench during the demonstration and again during the first week of production. The two listening sessions describe the machine better than a decibel number.