Short answer: Repeat orders follow after-sales performance, not sales performance. The factories that reorder from a supplier are the ones whose breakdown was answered with a part on site in days and a technician who knew the machine. Before buying — especially across borders — evaluate the service system as rigorously as the robot: which parts wear, where they are stocked, who is contracted to fit them, and what the response promise actually says.
What wears out, and what to stock yourself
Every robot has a predictable wear list: cables and dress packs flexing millions of cycles, cooling fans, batteries (including the small ones backing up encoder data), filters, and over longer horizons the reducers and motors themselves. The buyer's first document should be the maker's own wear-part list with expected service intervals — a maker who cannot produce one is telling you how the next decade will go. Stock on your own shelf the cheap parts whose absence stops the line; rely on the network for the expensive assemblies, with the delivery promise in writing.
The three service-network models
The maker's own network. Large arm manufacturers — FANUC and ABB are the standard examples — operate their own service organisations across major markets, with factory-trained technicians and regional parts hubs. This is the strongest model and part of what their prices buy. The distributor model. Mid-size makers serve foreign markets through appointed distributors whose service quality varies by firm, not by brand; audit the actual distributor, not the maker's headquarters claims. Third-party service. Independent firms increasingly maintain robots across brands, strongest on common models and weakest on proprietary diagnostics. Know which model covers your site — by contract, not by assumption — before the first purchase order.
Writing response time into the contract
"Fast support" is not a term; a response clause is. Define the clock: when it starts (logged ticket, not a phone message), what counts as response (a qualified technician engaged — remote diagnosis usually counts, an acknowledgement email does not), and the tiers by severity, distinguishing a stopped line from a degraded one. Cover parts separately from people: a technician in 24 hours is worth little if the part takes three weeks. And agree the escalation path — who, by name or role, a stalled ticket goes to.
The remote layer modern networks add
Service has acquired a software layer that changes what a network can promise. Connected robots report faults, error histories and component health before they stop — a failing fan or a degrading battery becomes a scheduled part shipment instead of a breakdown. Remote diagnostics let a specialist read the machine's logs and often resolve configuration and software faults without travel, reserving site visits for hands-on work. When evaluating a supplier's network, ask what fraction of its cases are closed remotely and what telemetry the robot sends home by default; a maker with a real remote layer can honour response tiers that a van-based network, however willing, cannot.
The downtime arithmetic (kept qualitative on purpose)
Buyers often discover that the expensive component in a breakdown is not the part but the idle line, the missed shipment and the overtime to recover. That arithmetic is why spare-parts budgeting should be set by criticality — what stops, for how long, at what consequence — rather than as a percentage afterthought. A small on-site stock of wear parts and a tested escalation route are usually the cheapest availability insurance a plant can buy.
The buyer's checklist
Before signing, obtain: the wear-part list with service intervals; the parts stocked in your country and their location; the service model covering your site and the named organisation behind it; response tiers and the definition of response; diagnostic access — what your own technicians may do without voiding warranty; and references from two customers in your region who have actually broken something. Suppliers confident in their network answer quickly. The answers, filed with the purchase, are also the baseline for the directory reviews and your own renewal decision when the second robot is considered.
Frequently asked questions
Which robot parts wear out first?
The flexing and consumable items: cables and dress packs, cooling fans, filters and backup batteries, followed over longer horizons by reducers and servo components. The maker should supply a wear-part list with service intervals — ask for it before purchase, not at the first breakdown.
What should a service response-time clause actually say?
When the clock starts (a logged ticket), what counts as a response (a qualified technician actively engaged, typically by remote diagnosis), tiers by severity, and separate commitments for parts delivery versus technician attendance. Acknowledge-by-email clauses are not response commitments.
Should spare parts be stocked at our own site?
For cheap, line-stopping wear parts, yes — the shelf cost is trivial against downtime. For expensive assemblies, rely on the supplier's regional stock, but verify what is actually held in your country and get the delivery commitment in writing.
Who services a robot bought from an overseas maker?
One of three parties: the maker's own local service organisation, an appointed distributor, or an independent third-party firm. Which one covers your site — and with what contractual response terms — should be established before the purchase order, not discovered at the first failure.