Sortation and conveyor equipment routinely outlives its manufacturer’s parts support. A sorter installed fifteen years ago may still move a hub’s core volume, while the company that built it has been acquired, has retired the model, or quotes parts at lead times measured in months. Operators in that position have three choices: replace the equipment, cannibalize retired units, or establish an independent supply of the parts that wear. This article describes how the third option is done properly.
Identify the parts that actually matter
Unsupported equipment does not need every part re-sourced. It needs a reliable supply of the components that are consumed in service and the handful of structural parts that fail occasionally. On a sorter that is typically diverter shoes and arms, pusher components, pop-up wheel hubs and wheels, carrier and tray hardware, induction and singulation rollers, guide rails, wear strips, and chute liners. On a conveyor it is rollers and shafts, drive hardware, side guides, transfer plates, and merge and gate components.
Maintenance records show which parts have been drawn and how often. Technicians know which failures stop the line. Between the two, a list of twenty to forty part families usually covers the risk.
Gather whatever documentation exists
Even unsupported equipment usually leaves a paper trail: an original parts manual with exploded views and part numbers, old purchase orders, a drawing or two from a past repair, and the parts themselves. All of it is useful. Part numbers identify the component unambiguously and let a supplier cross-reference across sites. Exploded views establish how the part fits and what it mates to. Purchase history gives consumption rates.
The most valuable artifact is a worn part together with an unworn example, or a worn part and the mating component it rides in. The unworn reference features on a worn part allow the original geometry to be reconstructed accurately.
Reverse-engineer to a controlled drawing
A competent supplier turns the sample into a drawing before making anything. Dimensions are captured on a coordinate measuring machine or optical comparator. Material is identified and hardness is tested, so a through-hardened wear part is reproduced in a hardened grade and a polymer guide is reproduced in a polymer with the same wear and friction behavior. Surface finish, plating, and any over-molded elastomer are specified from the sample and from the operating environment.
Tolerances are assigned by function, not copied uniformly. Fit surfaces, bearing seats, and track-facing dimensions are held tightly; cosmetic features are opened up. The resulting drawing is the controlled document for every future order, and it belongs to the operator as much as to the supplier.
- CMM or optical capture, with wear reconstructed from reference features
- Material identification and hardness confirmation
- Finish, plating, and polymer grade specified for the environment
- Functional tolerancing on fit and wear surfaces
- Controlled drawing retained for repeat orders
Qualify the first article in the equipment
A first-article inspection report proves the part matches the drawing. A fit check in the machine proves the drawing was right. Where practical, the first parts should be installed on one lane or one machine and run through a defined period before the production quantity is released. Differences in wear rate, noise, or tracking show up quickly in continuous-duty service and are far cheaper to correct at the first-article stage than after a stocking order has shipped.
For parts that interact with product, such as diverter shoes and chute liners, the trial should include the mix of package sizes and weights the lane actually sees.
Move the parts into a stocking program
Once qualified, a part for unsupported equipment is treated like any other wear part: a consumption rate is measured, minimum and maximum levels are set from lead time, and the part is held under vendor-managed inventory or a blanket order with scheduled releases. Because the supplier now holds the drawing, lead time for a reorder is the manufacturing time, not the manufacturer’s stocking policy, and emergency orders become rare.
Networks with several hubs running the same legacy equipment benefit most. One drawing serves every site, kits are labeled per site, and slow-moving parts can be held centrally.
What this is not
Parts produced this way are not OEM parts and are not represented as such. They are manufactured to a controlled specification under a quality system, with material certifications and inspection records available. Operators should keep that distinction clear in their own records, and should source safety-certified, firmware-dependent, or warranty-governed components from the manufacturer while support exists.
Esco Precision reverse-engineers, qualifies, and stocks replacement parts for sorters, conveyors, and related automation, including equipment whose manufacturer no longer offers parts support, under an ISO 9001:2015 quality system.
Key points
- Re-source the twenty to forty part families that are consumed in service, not the whole machine.
- A worn part plus an unworn reference is the most useful starting point.
- Insist on a controlled drawing, material confirmation, and a first-article report.
- Qualify the first parts in the equipment before the stocking order ships.
- Once qualified, the part is stocked and replenished like any other wear item.