Mobile vs Fixed Crushing Plant: The 5-Year Cost Comparison

The verdict first. A project that will run three to five years, or a plant that must move between sites, belongs on wheels. A reserve with ten or more years of life and stable demand usually wins on cost per ton as a fixed line. Everything else in this comparison is arithmetic supporting that statement, and the arithmetic below is laid out over five years, because that is the horizon where the two options genuinely overlap.

What actually differs beyond the wheels

A tracked mobile crushing plant carries its own chassis, tracks, power unit and hydraulics. A fixed plant leaves all that out, then adds costs that never appear on a machine quote. Foundations and reinforced concrete pads under each machine. Structural steel for the crusher support towers and the screen house. Discharge conveyors between the machines, often several, each with its own drive and pulleys. A control cabinet and cabling for the whole line, not one machine. And installation labour: weeks of crane time, alignment and commissioning that a tracked plant completes by driving off the trailer and starting up the same morning. None of these lines are optional on a fixed installation, and together they commonly reach a third to a half of the installed cost before the first tonne is crushed.

On paper, a 200 t/h fixed train looks $150k-$250k cheaper in machine capital than the tracked equivalent, and that is the comparison buyers stop at. Add the civil, installation and structural steel lines and the columns level at day one; add one dismantling and relocation cycle and the fixed option falls behind for any project under five years. The fixed line only begins to win when those one-time costs have been spread across enough tonnes, which is a question of years, not seasons.

The five-year cost model

The numbers are market windows in USD for Chinese-built equipment in 2026, on the same bands set out in the mobile plant cost guide. They assume a two-stage hard-rock train of comparable capacity in each column, roughly 150-250 t/h. Freight, duty and ground conditions move every line; the structure of the comparison does not.

Spares behave differently in the two columns too. A tracked plant is a self-contained machine: one engine family, one hydraulic system, one set of filters and hoses to stock, and the whole train travels on its own wheels to any dealer that can lift it. A stationary line spreads the same duty across machines from more than one supplier, each with its own wear parts, its own electrics and its own delivery route. The fixed line costs less per part and more in logistics, and over five years the second number tends to surprise whoever budgeted only the first.

One line the table deliberately leaves out is energy, because it is a running cost rather than a five-year capital line, and it cuts the other way. A diesel-hydraulic mobile crushing plant typically burns two to three times the energy cost per tonne of a grid-electric fixed line running the same duty. Over ten years at 500,000 tonnes a year, that difference alone can repay a large part of the fixed plant's civil works. It is the strongest single argument for the fixed option, and it only counts if the plant really does run that long.

When mobile wins

Short campaigns. A borrow pit, a dam project or a quarry cell with a defined life under five years never amortises the civil works of a fixed line. Concrete poured for a five-year pit is scrap at closure, and the structural steel sells for scrap prices. A tracked mobile crushing plant drives to the next site and its resale value follows it, because the used market prices the machine, not the pit it sat in. Two tracked moves at $25k-$60k each cost a fraction of one dismantle-and-re-erect cycle on steel, and the project keeps producing in the weeks a fixed line would spend being unbolted.

Uncertain reserves. Where the geological estimate carries a question mark, wheels are insurance. A mobile train follows the face as it advances, shifts to a second deposit when the first runs out, and resells into a deep used and rental market. A fixed line is a bet that the geology is right; when the bet fails, the steel cannot follow the rock. Operations that have watched a promising deposit turn into a data problem know the value of a plant that can leave. The premium for that optionality is real but small next to the cost of being wrong.

Multi-site work. Contractors serving several quarries, or recycling operations collecting demolition feed from multiple city sources, need the plant where the material is that month. A tracked line sets up in a morning and produces the same week, and an over-band magnet handles the rebar that would stop a fixed hopper. Feeding logistics invert too: instead of trucking raw material to the plant, the plant travels to the material, and only the sized product moves by road. Mobility is not a comfort feature in this trade; it is the difference between billing and waiting.

When a fixed line wins

A reserve measured in decades changes the arithmetic completely. Once foundations, steel and installation are amortised over ten or more years, the stationary plant pulls ahead on cost per tonne through three channels: lower machine capital to begin with, grid electricity instead of diesel-hydraulic power, and fewer maintenance hours per tonne on equipment that never moves. Stable demand matters as much as reserve life. A fixed line sized at 300 t/h runs economically at 300 t/h around the clock, while a fleet of tracked machines running flat out burns diesel and engine hours to hold the same figure.

Sites with inexpensive labour and steady management extract the most from a stationary line, because it rewards planning and punishes improvisation. Fitters who know the plant, a workshop on the ground and a spares shelf fifty metres from the machine all compound over a decade. A quarry that will not move for twenty years is usually paying a mobility premium it never uses, and the diesel bill for that premium arrives every month whether or not the tracks ever turn.

Crew size tells the same story from a different angle. A tracked train runs with one operator per machine and moves with a low-loader driver; a stationary line needs the same operators plus electricians for the switchgear, welders for the steel, and a maintenance crew whose whole job is the plant. In high-wage markets that difference alone can decide the question. In markets where labour is cheap and reliable, the fixed line absorbs it and keeps the energy saving, which is one more reason the geography of fixed plants looks the way it does.

The hybrid that quarries actually build

Ask a long-life quarry how it is built and the answer is often both. A tracked jaw at the face takes run-of-mine lumps to 700 mm, as on the SE-1060 with its 1060 x 750 mm opening, and feeds a fixed secondary cone and screen line on foundations, connected by one belt or a hopper. The primary follows the face as the pit advances; the reduction line never moves. The split matches each machine's economics: mobility is worth paying for where material arrives irregularly at the face, and worth nothing in a reduction circuit that sits in one place for twenty years. The hard rock solution page shows the arrangement machine by machine.

The hybrid is also how quarries phase a bet. Start with two or three tracked machines while the pit proves out; when the reserve and the order book are confirmed in year two or three, pour the foundations for the fixed secondary line and keep the tracked primary working through construction. Nothing is scrapped, nothing stands idle, and the capital arrives only after the geology has testified. It is the sequence a patient finance department writes on its own, once someone points it out.

Mobility is paid for every day and used a few times a year. Buy it where the material moves, not where the machine might.

The table above is the shortest honest version of the decision. Count the moves the project will actually make, count the years it will actually run, and let those two numbers choose the column. Site access, water supply and the skills already on the payroll refine the answer; they rarely reverse it. What reverses it is a change in the geology or the order book, and both of those show up in the first two questions long before they show up anywhere else.

Common questions

Can a mobile plant match a fixed plant's capacity?

Per machine, the gap has narrowed: tracked plants in the 200-400 t/h class are standard products now, and SUHMAN's range alone runs 22 tracked models from 50 to 500 TPH. The real difference is sustained output. A stationary line holds design capacity around the clock on grid power, while mobile fleets lose hours to moving, refuelling and feed logistics. Matching total capacity costs more in tracked units but arrives in weeks rather than months.

How much cheaper is a fixed plant per tonne?

On a ten-year-plus operation, commonly 15-30% lower cost per tonne once civil works are amortised, driven by grid electricity instead of diesel and by lower maintenance hours per tonne. Below roughly five years of project life the calculation reverses, because foundations, installation and dismantling fall on too few tonnes. The break-even point sits around the five-year mark for most two-stage trains.

What happens to a mobile plant's value after five years?

Tracked machines hold value better than their price suggests: a maintained unit commonly resells at 40-55% of purchase price, because the used market for track-mounted plants is deep and international. Value tracks hours, wear-part condition and service records more than age. A stationary line sells for a similar percentage but takes far longer to close, since the buyer must dismantle, load and ship it.

The primary-stage choice between crusher types is compared in Cone Crusher vs Jaw Crusher, and per-machine capacity figures are on the jaw crusher range page. For the full landed cost of a tracked train, the mobile plant cost guide itemises freight, spares and commissioning line by line, and the hard rock solution page shows both flows complete.