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Drive belts, food-grade stainless bearings, pneumatic cylinders, valves, fittings, couplings and chain.
Send the serial number of the unit, and a photograph of its nameplate with it. The serial number is what the part is ordered against; the nameplate settles which version of the machine it belongs to, because the same number can appear on more than one.
Part numbers are welcome where you have them. The quotation states the genuine part, its origin and its lead time.
None of the parts in this category is expensive. They account for a disproportionate share of unplanned line stops, and for most emergency airfreight consignments.
| Part | Failure mode in this environment |
|---|---|
| Drive belts | Heat and UV harden the rubber. Tension is lost well before the belt breaks. |
| Bearings | Washdown drives water past the seal. In a food plant the cleaning regime is the principal load. |
| Pneumatic cylinders | Compressed air carries moisture and oil. In high humidity the dryer determines cylinder life. |
| Couplings | Designed as a sacrificial element, and rarely held in stock. |
These lines are predictable and inexpensive, which is what makes them suitable for a planned annual order.
A belt relaxes before it fails. Lost tension produces slip under load, slip generates heat, and heat accelerates the loss of tension.