Buying Guide: The Road King Series of Cutters for Milling

One of the key features of the Road King line is its advanced tip designs.  Using the right tip helps to minimize noise and vibration. This not only makes for a more comfortable work environment but also reduces operator fatigue and can improve overall efficiency. 

Read more

The type of cutting tools used in road rehabilitation milling will depend on several factors, including the type of material being removed, the condition of the road, and the desired final surface texture.  

It's important to note that the cutting tools used in road rehabilitation milling need to be periodically replaced as they wear down over time. The wear rate of the teeth will depend on several factors, including the type of material being removed, the speed and advance rate of the machine, and the design and condition of the milling drum. Regular maintenance and replacement of the cutting tools are critical to ensure that the milling machine operates efficiently and produces a high-quality milled surface.  

Carbide scarifier bits, also called stinger bits, are used for gravel maintenance and road milling operations. The scarifier blade and bit system is designed to increase ground penetration and mixing by using individual bits that rotate on a washer. The tip of the bit is made from high-wear tungsten carbide; allowing it to handle extreme wear conditions. The rotating carbide bits are inserted into a scarifier board for an even cutting height with the ability to quickly rotate bits. DMC Wear Parts is proud to be an official distributor of KENNAMETAL products, below is a catalog of our available carbide bits and scarifier boards:

Goto KunXu Drill Tools to know more.

Benefits of Carbide Bit Scarifier Systems

A road maintenance system with replaceable and rotating carbide bits on Sandvik bit boards offers many potential benefits:

• Tungsten carbide-tipped bits outlast the standard wear life when compared to conventional grader blades.
• Scarifier blade systems are designed with the ability to individually replace bits and small scarifier sections so that they can be easily repositioned along a moldboard to maintain a consistent cutting height and straight edge. Plus, the bits are rotating and self-sharpening so that each bit will wear more uniformly and last longer than flat blades.
• Individually replaceable scarifier bits allow a single person to change the cutting edge in a matter of minutes, without any special tools, which reduced downtime and operator maintenance time.
• Reduces costs associated with replacement part inventory, downtime, labor, and overall operations.
• Eliminates “washboarding” and potholes with fewer passes than standard blades. Decreases the number of passes necessary to properly maintain a road surface.
• Scarifier systems easily penetrate hard-packed gravel and frozen ground with less down pressure and horsepower, which saves fuel and money while operating motor graders.
• Carbide-tipped systems can more effectively cut hard materials, shatter rocks, and grind off embedded rocks. This allows the road to be cut deeper and restored with fewer passes.
• The grooves left by the individualized bits help to improve traction by eliminating shear planes, washboarding, and deep potholes.
• Carbide steel cutting bits with free rotation absorbs some of the vibration and force of the grading operations, making it a more comfortable experience for operators and putting less wear on the overall machining equipment.

How To Use Scarifier Blades

There are three main steps when grading a road with a scarifier blade and carbide bit system. The first step is to loosen and break through the surface of the road. When doing this the carbide bits will penetrate the ground and create shallow grooves that improve the mixing and binding of the surface for the next phase.

Once the entire surface is graded it is time to redistribute the accumulation of materials from the outer edge of the road. Bringing this loose material back onto the road surface is important in creating proper drainage and road shape. By blending the retrieved materials with the loosened material dug from the primary surface it ensures the longevity of the road and reduces dust. Loose debris such as roots, vegetation, and larger rocks will naturally flow down the blade and be deposited at the edge of the road.

The final stage of grading and maintaining a road with a scarifier blade system is compacting the ground to provide a finished flat surface. For more operator tips and details about how to scarify a road, check out the KENNAMETAL scarifier guidelines.

For more Road Milling Bitsinformation, please contact us. We will provide professional answers.

Popular Scarifier Applications Using Carbide Bits & Sandvik Bits

• Scarifying severe, tough and high-impact surfaces that require deep penetration
• Dirt and gravel road maintenance
• Ice, frozen ground, and hard-packed snow
• Asphalt milling
• Mixing dust suppressants into unpaved roads using calcium chloride or magnesium chloride