New vs Used Gantry Shear: Total Cost View
The used-versus-new comparison is usually run on purchase price, and purchase price is the smallest of the five numbers that decide it. This article is the total cost view at production scale: five cost lines over a machine’s life, how each differs between a used machine and a new one quoted against your duty, and the arithmetic that settles the question — with the Q91-1250 production class as the reference.
The Five Cost Lines
1. Purchase price. The number every comparison starts with, and the one that flatters the used machine most. A well-maintained used machine at this class costs materially less than a new build, and the gap is real.
2. Refurbishment. What the inspection finds. Hydraulic rebuild, blade seats, control system updates, frame repairs — each a line, and the inspection guide covers how to price them. A used machine’s refurbishment line is the purchase price’s shadow, and it is only visible after the inspection.
3. Duty match. The cost of running a machine quoted for someone else’s duty. A used machine was built against the previous owner’s declaration — their material, their shift pattern — and yours differs. The mismatch surfaces as stretched cycle times, shortened blade intervals and hydraulic temperatures that run warmer than they should. A new build is quoted against your declaration, and the difference is the third cost line.
4. Wear and maintenance. Blades, seals, liners, filters — a decade of consumables. A used machine’s wear budget starts mid-life with unknown history; a new machine’s starts at zero with a published schedule and a spares path. The difference is not the parts cost — it is the predictability.
5. Downtime risk. The fifth line is the one production operations price last and feel most. A machine with an unknown history and no spares path converts every failure into a search; a machine with documentation and a channel converts it into a planned change. At 160 to 200 tons a day, the downtime arithmetic prices this line in furnace terms, and it is usually the largest number on the page.
The Arithmetic
Run the five lines over ten years for both options:
| Cost line | Used machine | New build |
|---|---|---|
| Purchase price | Lower | Higher |
| Refurbishment | Priced from inspection | None |
| Duty match | Someone else’s declaration | Your declaration, in writing |
| Wear and maintenance | Mid-life, unknown history | Published schedule, spares path |
| Downtime risk | Unknown history, no path | Documented, channeled |
The used machine wins line one. The new build wins lines three, four and five, and line two depends entirely on the inspection. The total usually turns on line five — and the operations that price line five honestly before the inspection are the ones that buy the right machine, whichever it is.
When the Used Machine Wins
Three cases point at the used machine honestly. When the inspection comes back clean — frame sound, hydraulics healthy, seats good, records readable — and the duty it ran matches yours. When the spares path exists and the model is still supported. And when the price discount is large enough to fund the refurbishment line and still leave the total below the new build. All three can hold at once, and a used machine bought on those terms is the better purchase.
When the New Build Wins
The new build wins when any of the three fails: an inspection that finds structural or hydraulic work, a duty history that does not match your operation, or a spares path that does not exist. It also wins when the specification matters — a production operation selling to a charging specification needs a machine quoted against its declared duty, and that machine is new by definition. The consistency guide covers what the duty match buys at this class.
The Honest Recommendation
We build new machines, and this article is not a neutral survey — it is our account of when the used machine genuinely wins, including all three cases above. A buyer who inspects properly and finds a clean machine at the right price should buy it; that buyer comes back for the second machine with evidence rather than with a guess, and the second machine is where the decade of tonnage lives. Send your material list, duty declaration and the inspection findings if you have them — the written recommendation comes back within two business days.
The Ten-Year Arithmetic
The five cost lines run over ten years, and the totals usually turn on the last one. The used machine wins the purchase price line decisively — a well-maintained machine at the production class costs materially less than a new build, and the gap is real. The new build wins duty match, wear predictability and downtime risk, and line two depends entirely on the inspection.
The arithmetic is not close in either direction by default — it is close because the lines genuinely trade. A used machine with a clean inspection, a matching duty history and a live spares path can beat a new build on the total; a used machine with an ambiguous history and no path loses on line five alone. The inspection is what decides which machine you are looking at.
When Both Answers Are Honest
We build new machines, and the honest position has two columns. The used machine wins when the inspection is clean, the duty it ran matches yours, and the spares path exists — all three holding at once is a legitimate purchase at a real discount. The new build wins when any of the three fails, and it wins decisively when the specification matters: a production operation selling to a charging specification needs a machine quoted against its declared duty, and that machine is new by definition.
Send the inspection findings and the material list. The written recommendation comes back within two business days, and it occasionally points at the used machine — the recommendation follows the arithmetic, not the showroom.
The Duty Match, Priced
The third cost line — duty match — is the one buyers price least and feel most, and it deserves its own arithmetic. A used machine was built against the previous owner’s declaration: their material, their shift pattern, their discharge arrangement. Yours differs. The mismatch prices as stretched cycle times on routine material, shortened blade intervals without a material change, and hydraulic temperatures that run warmer than they should — none of it a defect, all of it the machine working outside the specification it was built for.
Price it over the machine’s remaining life, not at the purchase: the tonnage difference between the published band and your actual output, times the margin per ton, times the years. At production scale that figure routinely exceeds the purchase-price gap between the used machine and a new build — which is why the duty history is the first question after the frame, and why a new build quoted against your declaration wins the comparison even at a higher price.
The Total as the Comparison
The five cost lines exist because purchase price is the smallest of them, and the comparison that matters is the ten-year total. The used machine wins the price line; the new build wins duty match, wear predictability and downtime risk; the inspection decides line two. The arithmetic is not close in either direction by default — it is close because the lines genuinely trade, and the total is what breaks the tie.
Run the five lines before the inspection rather than after, because they tell you what the inspection is worth finding. The inspection guide is the list to walk with, and the honest answer is occasionally the used machine.
Buyer FAQ
Which cost line decides the comparison?
Usually downtime risk. The used machine wins purchase price, and the new build wins duty match, wear predictability and downtime risk — and the last of those is priced in furnace terms at production scale.
When is a used machine clearly the better buy?
When the inspection is clean, the duty it ran matches yours, and the spares path exists. All three holding at once is a legitimate purchase at a real discount.
What does the duty match cost?
Stretched cycle times, shortened blade intervals and warmer hydraulics — the machine quoted for someone else’s declaration fighting your material. It is invisible at purchase and obvious by year two.
Can a used machine be inspected remotely?
Partially — video walkthroughs and service records cover a first pass. The frame, hydraulics and blade seats need eyes on the machine, and the inspection guide is the list to walk with.
What if my inspection findings are ambiguous?
Send them over. We will read the frame, hydraulic and seat findings against the class your material needs and tell you honestly whether the refurbishment total survives the comparison. Send the inspection findings and the material list, and the written recommendation comes back within two business days — it occasionally points at the used machine, because the recommendation follows the arithmetic rather than the showroom.