Description of concrete scarifier:
Scarifiers, also called surface planers or milling machines, remove concrete faster and more aggressively than grinders. That's because they use the pummeling action of multi-tipped cutting wheels, or flails, that rotate at high speeds to chip away at the concrete surface. You can choose from many different styles of interchangeable cutter assemblies to achieve the profile you need for each job.
Choices of concrete scarifier range from small handheld units with 2- to 3-inch cutting widths to manual push or self-propelled walk-behind machines with working paths of 4 to16 inches. Production rates for walk-behind models range from 350 to 1,500 square feet per hour, depending on machine size and horsepower, material to be removed, hardness of the concrete and type of cutter used. Cutting depths of concrete scarifier are adjustable on most machines, with some models achieving up to 1/4 inch of material removal in one pass.
The cutting wheels themselves are mounted on shafts on a removable drum. The number of cutter shafts per drum varies by model, but generally machines with more shafts can hold more cutters per loading for increased scarifying action and faster production rates. Look for machines with quick-change drum designs that allow you to switch or replace cutters in minutes
Using tips of concrete scarifier:
In addition to varying the cutter type, you can also achieve different finishes by adjusting the spacing and pattern of the cutter assemblies. The closer the cutters are spaced, the smoother the finish. A wide spacing achieves a coarse finish. Some contractors bring drums outfitted with different cutter types and arrangements to each job.
A concrete scarifier generally leaves behind a rough finish and may create ridges in the concrete. On jobs where you need a smoother finish, you may need to grind the surface after scarifying.
Although both tungsten carbide and steel cutters can perform similar tasks, tungsten carbide cutters are more aggressive and longer lasting, making them practical for jobs requiring high production rates or scarifying of high-psi concrete. Steel cutters have a shorter life, but are also less expensive.
Parameters of concrete scarifier:
Three-phase asynchronous motor / 5.5KW (CW200D)
Honda GX270 Gasoline Engine / 13HP (WC200F)
Three-phase asynchronous motor / 7.5KW (CW255D)
Honda GX270 Gasoline Engine / 13HP (WC255F)
Number of knife shafts
Number of blades
78 pieces (6 teeth)
108 pieces (6 teeth)
Bearing seal form
A milling width
A milling depth
Long × wide × high
Hourly work efficiency
Air damping tube
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