Most buyers ask about price, delivery time, and specifications. Those three questions are necessary but not sufficient, because they do not reveal whether the machine will still be running in three years or whether the supplier will still be reachable when something wears out.
The first question is what the cutting shaft is made from and how it is constructed. This is the component that determines how thick the machine can cut, how wide it can work, and how long it lasts. A good answer describes the material, the machining process, and the expected service life. Aircosan shafts are large one-piece units machined from 40Cr steel rather than the more common 45#, processed through lathe work, high-frequency treatment, quenching, and blackening, and designed for a service life beyond five years. A vague answer, or one that describes blades rather than a shaft, suggests the supplier is not describing their own product in detail.
The second question is what the machine weighs at the working width being quoted. This is the most reliable indirect indicator of what is inside, because it reflects how much material went into the frame and the cutting components. At the same working width, a heavier machine almost always means a larger and thicker shaft. A supplier who cannot provide the weight, or who provides a figure noticeably lower than competing quotes at the same width, is describing a lighter machine.
The third question is whether the motor is a branded unit and whether overload protection is included. Overload protection matters because a jam on a corrugated machine is a mechanical event rather than an inconvenience. A machine without it continues driving a stalled shaft, which risks burning out the motor and creates downtime. The answer should be specific rather than reassuring.
The fourth question is how spares are supplied and how quickly. Blades dull over time, and a dull blade produces uneven output, which affects protection quality. If spares have to be ordered case by case and shipped internationally, the downtime between ordering and delivery becomes part of the cost of ownership. Ask how long a typical spare takes to arrive, and whether common items are held in stock.
The fifth question is how technical support is delivered. Direct manufacturers can answer questions about settings, output quality, and troubleshooting. Resellers may route those questions through a third party. Ask whether support is provided by the manufacturer or by a distributor, and whether the person answering knows the machine rather than a script.
The sixth question is what the warranty covers and what it excludes. A warranty that excludes the cutting components is less valuable than one that covers them, because cutting components are the parts that wear. Ask specifically about the shaft, the motor, and the electrical components.
The seventh question is what preparation the machine requires for the material being processed. Standard corrugated cardboard is suitable, including single-wall and some double-wall. Clean, dry cardboard works best. Light tape and labels are acceptable. Staples, metal inserts, and reinforcing materials should be removed before feeding, because they damage cutting components. Damp or heavily contaminated cardboard cuts poorly and wears the components faster. A supplier who explains this clearly is describing the machine accurately rather than overselling it.
The eighth question is how the machine handles the widest and thickest material the operation actually processes, not the maximum the machine can handle under ideal conditions. A machine rated for a thickness may only achieve it with specific board types, and the answer to this question determines whether preparation is required before feeding.
The ninth question is whether the supplier manufactures the machine or resells it. This affects spares, support, and the accuracy of technical answers. Aircosan manufactures its own equipment and builds models across a range of working widths, which means questions about construction and settings are answered by the people who build the machines.
What the answers reveal is whether the supplier is describing a machine or describing a price. The first produces a purchase that lasts. The second produces a purchase that works until it does not, at which point the cost of ownership becomes clear.