An aggregate stacker is a conveyor that moves and piles bulk materials—sand, gravel, crushed stone—into large stockpiles. Radial and telescopic models improve stacking efficiency by building higher, cleaner piles with less segregation and fewer loaders. The right choice depends on your throughput, material type, and site space.
If you handle bulk material or other aggregate materials, an aggregate stacker earns its keep fast. It can replace wheel loaders for stockpiling while improving safety by reducing material handling and cutting reliance on trucks. But not every stacker fits every operation, and buying the wrong one locks you into higher costs for years.
This guide breaks down what aggregate stackers do, the main types, the specs that matter, and how to buy one without overpaying. Read it before you request a single quote.
An aggregate stacker is a conveyor system for moving and stockpiling bulk material such as aggregates. Feed material onto the belt at one end, and the stacker carries it up and out, dropping it from a discharge point to form a pile.
The payoff is simple: bigger piles, less rehandling. Like other aggregate conveyors, a stacker builds a taller, more consistent stockpile than a loader can, and it does it continuously for efficient material handling. That means fewer machines running, less fuel burned, and less labor tied up moving the same material twice.
Operations that run stackers include sand and gravel pits, quarries, mining sites, recycling yards, and ports. Anywhere material piles up, a stacker is best suited to sites where large volumes must be moved efficiently.
There are three core types. Each offers different solutions for different stockpiling applications.
Fixed (stationary) stackers: Bolted to one spot, discharging into a single pile shape. Lowest cost, least flexibility. Best for high-volume operations with one dedicated product.
Radial stackers: These stacking conveyors pivot on a wheeled axle to swing through an arc, building a kidney-shaped or fan pile. This spreads material over a wider footprint and increases pile capacity without moving the machine.
Telescopic stackers: Built on telescopic conveyors, they extend and retract the conveyor length mid-operation. This controls the drop height and layers material to minimize segregation—critical when your product spec depends on consistent gradation.
Choose a radial stacker if pile capacity and a smaller equipment count matter most. Choose a radial telescopic stacker if you need both wider stockpile coverage and controlled material placement. Choose a fixed stacker if you run one product at high volume and want the lowest upfront price.
The fastest way to overpay is to shop on price before you know your numbers. Define these specs first, then request quotes.
Throughput (TPH): Match the stacker's rated tons per hour to your feed rate. Proper sizing supports higher production rates and better productivity. Undersize it and you bottleneck; oversize it and you pay for capacity you never use.
Belt width and length: Belt width sets maximum throughput. Length sets your stockpile height and reach. A longer conveyor builds a taller pile but demands more counterweight and a stronger drive.
Stockpile capacity: Calculate the pile volume you need. Radial and telescopic models publish capacity figures based on their swing arc and discharge height, which helps you maximize stockpile volumes for efficient stockpiling.
Power source: Electric, diesel, or hydraulic. Electric runs cheaper and cleaner on sites with grid power. Diesel wins on remote sites with no hookup.
Portability: Track-mounted, wheeled, or skid-mounted. If you relocate piles often, a track-mounted or wheeled unit saves you setup time on every move, and the right level of mobility can improve operational efficiency.
State your throughput, material type, and pile requirements in every quote request. Vendors who know your numbers quote accurately. Vendors who don't pad the price.
Prices vary widely across aggregate equipment categories as well as by stacker type, size, and condition. A small fixed stacker runs a fraction of a large telescopic radial unit. Portability, belt width, and power source all move the number.
New units carry a premium but come with full warranty and current-spec components. Used units save cash upfront but demand inspection—the belt, idlers, drive motor, structural steel, and other heavy duty wear areas or duty-class components are where hidden costs hide.
A 2019 unit with documented service history and fresh belting tells a better story than a newer machine with worn idlers and no paperwork. Buy the maintenance record, not just the model year.
Get itemized quotes from manufacturers. Freight, assembly, and electrical hookup often ride outside the base price, and location can push costs higher if the unit is shipped to or installed on a remote site. Ask what's included before you compare numbers.
Both work. The right pick depends on your budget and how much reliability matters in day-to-day production.
Buy new if you need warranty coverage, current-spec components, and reliable performance that supports uptime from day one. You pay more upfront but avoid rebuild surprises.
Buy used if upfront cost matters more than warranty and you can inspect the machine—or pay someone qualified to. A used stacker saves real money, but a worn drive or cracked frame erases those savings fast.
On any used unit, verify four things: belt condition, idler wear, drive motor hours, and structural steel integrity so the machine can withstand demanding conditions. Run it loaded if the seller allows. A stacker that moves material cleanly under load proves itself better than any listing photo.
An aggregate stacker cuts your loader count, your fuel bill, and your labor hours on every ton you handle compared with loaders or manual rehandling. The machine pays for itself faster when it's sized right—so define your throughput, material type, pile requirements, and customer needs before you shop for better operational efficiency.
Match the type to your job: fixed for single-product volume, radial for pile capacity, telescopic for gradation control. Then vet condition hard, get itemized quotes, and buy the service record along with the machine.
Know your numbers. Then buy.
An aggregate stacker moves and piles bulk material—sand, gravel, crushed stone—into large stockpiles using a conveyor belt. It replaces wheel loaders and manual rehandling by streamlining loading and unloading into stockpiles for storage, cutting fuel, labor, and equipment costs in pits, quarries, recycling yards, and ports.
A radial stacker pivots on a wheeled axle to swing through an arc, spreading material into a wider fan-shaped pile for higher capacity and changing how material is stored in the pile. A telescopic stacker extends and retracts its conveyor to control drop height and layer material, which minimizes segregation, reduces compaction, and protects your product gradation.
Cost depends on type, size, belt width, power source, and condition, and prices also vary by intended transfer role or position in the system. Small fixed stackers cost far less than large telescopic radial units. Optional integrated pieces such as a hopper can raise the price, and a feeder setup can change the cost as well. New machines carry a warranty premium; used units save upfront but require inspection of the belt, idlers, drive motor, and frame. In a full plant layout, compatibility with other equipment can affect total purchase cost too.
Match the stacker's rated throughput (tons per hour) to the feed rate required for transporting aggregate, then size belt width and conveyor length to your stockpile height and capacity needs, with sizing also influenced by where the unit sits in relation to a crusher or within an aggregate processing plant and the wider flow of conveyors. Undersizing bottlenecks your operation; oversizing wastes money on capacity you won't use.
Buy new if you need warranty coverage and predictable uptime. Buy used if upfront cost matters more and you can inspect the machine; buyers typically accept more condition risk in exchange for lower cost. On any used unit, verify belt condition, idler wear, drive motor hours, and structural steel, especially where dust exposure or crushing duty, for example, may have accelerated wear, before you commit.