Most mobile screens split feed into two or three fractions. The Metso Lokotrack ST4.8 splits it into four, a difference that changes how many passes a production line needs and how much handling happens between the crusher and the stockpile. Understanding what that triple-deck design actually delivers helps determine whether it is the right fit for a given operation.
This post covers what makes the ST4.8 different from a standard mobile screen, how it compares to the two-deck ST2.8, and why its transport and control features matter for operations moving into Ecuador, Panama, and Guyana.
Why the ST4.8 Is Built Around Four End Products
What Triple-Deck Screening Actually Means
A triple-deck configuration stacks three separate screening surfaces, each sized to pass a different fraction as feed moves through the unit. The result is four distinct output streams from a single pass: three screened fractions plus the oversized material that never makes it through the top deck.
Why Four Products in a Single Pass Changes an Operation’s Economics
Producing four fractions in one pass means fewer machines in the circuit and less rehandling of material between stages. An operation that would otherwise need multiple screening passes, or a combination of units to hit the same product split, can run the ST4.8 as a single station and cut both equipment cost and cycle time.
What the ST4.8 Actually Delivers
Screen Size, Feed Hopper Capacity, and What That Means on Site
The ST4.8 runs a screen measuring roughly 5,480 by 1,524 millimeters with a 7.5 cubic meter feed hopper, sized to accept material fed by excavator, wheel loader, or conveyor. That hopper capacity keeps the unit running steadily even when feed arrives in uneven batches rather than a continuous stream.
Interchangeable Screen Meshes and Fine-Tuning for Different Applications
Screen meshes on the ST4.8 change with a simple switch, allowing the same unit to be reconfigured for different aggregate specifications without a major mechanical overhaul. That flexibility matters for operations producing multiple product grades across different contracts or seasons.
Fuel Efficiency and Power Through the Updated Hydraulic System
The current generation reduces hydraulic oil volume by roughly 70 percent while delivering around 20 percent more power, achieved through a redesigned hydraulic tank and dedicated pumps for the screen and conveyors. A Stage V engine option lowers emissions while maintaining the same service intervals operators are used to.
How the ST4.8 Differs From the ST2.8’s Two-Deck Scalping Approach
Two-Deck Scalping vs Triple-Deck Product Separation
The ST2.8 is built around scalping: removing oversized or sticky material ahead of a crusher using an aggressive stroke and a two-deck design. The ST4.8 is built for a different job entirely, producing four finished product streams in a single pass rather than pre-treating feed before it reaches a crusher.
When Four-Product Separation Matters for an Operation
An operation selling multiple aggregate grades, road base, ballast, and concrete aggregate from the same source material benefits directly from four-product separation. A scalping screen like the ST2.8 solves a different problem, protecting downstream equipment from material that would otherwise clog it.
If you want to learn more about that scalping approach and why it is built specifically for sticky material, check out our guide on the Metso Lokotrack ST2.8 mobile scalping screen built for sticky material.
Transport and Setup: Why a Single-Unit Mobile Screen Matters
Hydraulically Foldable Conveyors and What They Save on Setup Time
Every conveyor on the ST4.8, the product conveyor and the three side conveyors, folds hydraulically for transport. That design eliminates the disassembly and reassembly work that comes with screens built around fixed or bolt-on conveyor sections.
Moving Between Sites Without a Multi-Load Transport Plan
Because the entire unit transports as a single load, moving the ST4.8 between sites does not require coordinating multiple trucks or a staged reassembly on arrival. For operations running short-term contracts across different locations, that transport simplicity translates directly into less downtime between jobs.
Interlocking With Lokotrack Crushers Through Metso IC Process Control
What Single-Button Start-Up and Coordinated Operation Actually Do
The optional Metso IC process control system gives the ST4.8 single-button start-up and the ability to interlock with Lokotrack crushers running the same system. That coordination means the crusher and screen start, stop, and adjust together rather than requiring separate manual control at each unit.
Building a Complete Mobile Crushing and Screening Line
Interlocking the ST4.8 with a primary crusher like the LT106 or a secondary unit like the LT200HP creates a fully mobile production line that moves as a coordinated system rather than a set of independently operated machines. This is where the ST4.8 earns its place in a multistage operation, not just as a standalone screen.
If you want to learn more about the primary and secondary crushers referenced here, check out our guides on the Metso Lokotrack LT106 mobile jaw crusher and the Metso Lokotrack LT200HP mobile cone crusher for secondary aggregate production.
Mobile Screening Plant for Sale in Ecuador: What Operators Should Know Before Buying
Matching the ST4.8 to Quarry or Aggregate Production Needs
Operators evaluating a mobile screening plant for sale in Ecuador should confirm how many distinct product grades their operation actually sells. The ST4.8’s four-product output is built for exactly that use case, but a simpler two-product operation may not need the added mesh and deck complexity.
What Comes Standard vs What Should Be Confirmed Before Purchase
Before purchase, confirm what is included with the specific unit:
- Screen mesh configuration for the intended product mix
- Whether the Metso IC process control system is installed
- Engine tier and emissions certification for the destination country
- Current hours and maintenance history if the unit is used
- Compatibility with an existing or planned crushing line
These details determine both the purchase price and how quickly the unit fits into production.
ST4.8 Screen Support in Panama and Guyana: Why Regional Availability Matters
Why a Wrong or Delayed Mesh Order Costs More the Farther It Has to Travel
For operations sourcing the st4.8 screen in Panama or Guyana, a wrong mesh configuration or a delayed replacement order means a second round of international freight and customs clearance, while the unit runs below capacity or sits idle waiting on the correct part.
What Ownership Looks Like After the Sale: Parts, Service, and Technical Support
Owning an ST4.8 means an ongoing relationship with screen meshes, conveyor components, and hydraulic parts, not just a one-time purchase. A supplier positioned to support those needs regionally protects uptime long after the initial sale.
What Millennium Machinery Offers on the Lokotrack ST4.8
Current Availability and What’s Included With the Unit
Millennium Machinery has the Metso Lokotrack ST4.8 available now for operators in Ecuador, Panama, and Guyana. Contact our team for current specifications, hours, and configuration details on the available unit.
Genuine Metso Parts and Technical Support as an Authorized Aggregates Partner
As an authorized Metso Aggregates partner, Millennium Machinery backs every ST4.8 sale with genuine parts access and factory-trained technical support, so the unit stays productive well beyond the purchase itself.
Quick Answers
What makes the ST4.8 different from a standard mobile screen?
The ST4.8 runs a triple-deck configuration that produces four separate product streams in a single pass, reducing the number of machines and handling stages needed to hit a multi-grade product split.
How does the ST4.8 differ from the ST2.8?
The ST2.8 is a scalping screen built to remove sticky or oversized material ahead of a crusher. The ST4.8 is built for finished product separation, producing four distinct grades from a single pass rather than pre-treating feed.
Can the ST4.8 work with a Lokotrack crusher?
Yes. With the Metso IC process control system installed, the ST4.8 can interlock with Lokotrack crushers for coordinated start-up and operation as part of a complete mobile production line.
Why does regional sourcing matter for equipment like the ST4.8?
A wrong or delayed mesh order requires a second round of international freight and customs clearance, which costs more time and money than sourcing from a regional supplier.
Does Millennium Machinery support the ST4.8 after purchase?
Yes. As an authorized Metso Aggregates partner, Millennium Machinery provides genuine parts access and factory-trained technical support for every ST4.8 sold.
Get Four-Product Production Running
Millennium Machinery has the Metso Lokotrack ST4.8 available now for operators in Ecuador, Panama, and Guyana, backed by genuine parts and authorized technical support.
Contact our team today to discuss availability and get this unit into production.
