Every machine has parts that wear, and every machine needs replacement parts eventually. A cardboard shredder is no different. The parts that wear are predictable, and the inventory that should be kept on hand depends on how often the machine runs and how critical the downtime is.
The first part to understand is the die. The die is the component that actually cuts the cardboard, and it wears out over time. Die life is generally 1.0 to 1.3 million meters depending on material and usage. The die is the most frequently replaced part, and it should be tracked based on the meters processed rather than the calendar. The operation should keep one replacement die on hand, so that a worn die can be changed without waiting for a delivery.
The second part is the cutter shaft. The shaft is the component that holds the die and turns under load. It is designed for a long service life -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#. The shaft does not need to be kept in stock for most operations, because it rarely fails. But operations that run the machine continuously may want to keep one on hand, because a shaft failure stops the line.
The third part is the motor. The motor is the component that drives the shaft. Aircosan machines use a branded motor with ample power, so thick and hard cardboard feeds smoothly without repeated jamming at the inlet. The motor is designed to last, but it can fail if the machine is overloaded or if the power supply is unstable. Aircosan machines use overload protection -when a jam occurs, the machine automatically cuts power and stops, protecting the motor. That protection reduces the risk of motor failure, but operations that run the machine continuously may still want to keep a motor on hand.
The fourth part is the belt. Some machines use belts to transfer power from the motor to the shaft. Belts wear over time and need to be replaced. The belt is a low-cost part, and keeping one in stock is inexpensive. The belt should be checked during maintenance and replaced when it shows signs of wear.
The fifth part is the bearings. Bearings support the shaft and allow it to turn. They wear over time and need to be replaced. The bearings are a low-cost part, and keeping a set in stock is inexpensive. 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. That tight fit reduces the dust that reaches the bearings, which extends their life.
The sixth part is the side panels. The panels are not a wear part, but they can be damaged if the machine is moved or if the panels are removed carelessly. A replacement panel is not usually kept in stock, but the operation should know where to order one if a panel is damaged.
The seventh thing is the inventory level. The inventory level depends on the machine's criticality. A machine that runs one shift a day and has a backup can keep minimal inventory. A machine that runs three shifts and is the only material source should keep a fuller inventory, including a die, a shaft, a motor, a belt set, and a bearing set. Aircosan runs its own parts processing factory, controlling part quality in-house rather than assembling from mixed outside sources, which means replacement parts come from the same source as the original machine.
The eighth thing is the supplier relationship. The operation should know the lead time for each part and should order parts before they are needed rather than after they fail. Aircosan has an online after-sales team that responds within 12 hours and can connect customers directly with engineers, without going through salespeople relaying messages. 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.
For a maintenance manager, the practical approach is to list the parts that wear, estimate the failure rate, and set the inventory level based on the machine's criticality. The die is the part that needs the most attention, because it wears the fastest and is the easiest to predict. The other parts are less predictable, but keeping a small inventory reduces the risk of extended downtime.