Scrapers Heavy Equipment: High-Efficiency Earthmoving Solutions

Scrapers are highly productive machines for bulk earthmoving applications, as they were designed to accomplish large amounts of material movement with very little gear movement. Scrapers work on a cut-and-carry basis, in that they use the cutting edge located at the front of the machine to cut into the ground while at the same time opening the scraper apron to let the material flow into the bowl which is located at the rear of the unit, and then upon a full bowl being filled, the scraper apron closes, then lifts slightly, while the machine travels to the dump site, the ejector plate at the rear takes the material out of the bowl for spreading.

There are three basic types of scrapers: towed scrapers (where the scraper is towed by either a dozer or tractor), motorized scrapers (self-propelled) and elevating scrapers (load material using a conveyor, allowing hard soils to be loaded). Scrapers are used extensively in large civil projects such as highways, airports, dams and land reclamation. Modern self-propelled scrapers have twin-engine and/or articulated 6-wheel drive for better traction and maneuverability. The newest models have the ability to provide real-time grade control through GNSS, bowl auto-positioning and telematics for fleet optimization of the newest self-propelled units.

Although scrapers lose their efficiencies due to steep grades, rocky terrain or extreme short long hauls, scrapers are unmatched in their niche for moving large quantities of acceptable material to a greater degree of effectiveness and efficiency than any other method when site conditions match their operational sweet spot.

F&Q About Scrapers Heavy Equipment

What’s the difference between a towed scraper and a self-propelled scraper?

Towed scrapers and self-propelled scrapers differ in several ways. A towed scraper is towed behind a separate prime mover, such as a bulldozer, and is typically less expensive and has a simpler design; however, they are less efficient when hauling materials over long distances. In contrast, a self-propelled scraper has its own engine and drivetrain, which allows for faster rates of travel, better control of travel speed and increased productivity for medium distances compared to a towed scraper.

How much material can a scraper move in one cycle?

Self-propelled scrapers typically have a capacity of between 10 and 30 cubic metres (13-40 cubic yards) per pass, depending on the machine's size. The largest self-propelled scrapers can move materials at rates greater than 1,000 cubic metres/hour under optimal conditions.

Are scrapers still relevant with modern excavator-truck fleets?

Yes, when used under optimal conditions. For large, open worksites with a soil type capable of supporting scrapers and haul distances of less than 2 kilometres, scrapers can provide significantly lower operating costs per cubic metre of material moved compared to either trucking or using a loader to move the material to a truck.

What type of soil works best for scrapers?

Towed scrapers should be used on soils that are loose to medium density, such as sand, clay, gravel or loam. Towed scrapers will be less productive when hauling materials over hard-packed, rocky or highly cohesive soils, unless these soils are prepped with either dozers or rippers to loosen the soil.

Advantages of Scrapers Heavy Equipment

Unmatched Earthmoving Efficiency

The Machine Combining Excavation, Transport & Spreading into One Machine that Significantly Reduces Cycle Time Compared to Loader-Truck Systems

High Production in Ideal Conditions

It is Ideal for flat and gently rolling terrain (typically where travel distances range from 300 to 2,000 metres), where you can achieve the most economical cost per cubic metre moved.

Precise Grade Control

Most Newer Models Have Built-In GPS/ Laser Guided System For Accurately Cutting Or Filling Without Manually Stake-Outs.

Robust Design for Continuous Operation

Manufactured With Heavy-Duty Frame Construction, High Torque Power Train, And Wear Resistant Cutting Edges To Withstand Heavy Abrasive Soil Environments And Continuous Use (All Shifts).

Scrapers Heavy Equipment: High-Efficiency Earthmoving Solutions

Overview of Scrapers Heavy Equipment