What are the types and characteristics of cutting teeth for rotary excavators?

What are the types and characteristics of cutting teeth for rotary excavators?
The cutting teeth of a rotary excavator are important accessories, with a variety of types and characteristics. The following are some common types and their characteristics:
Scraper teeth: The blade of the scraper teeth is wider, which can better adapt to the excavation of hard rock layers. Its characteristics are strong rock breaking ability, good wear resistance, and long service life. However, the weight of the scraper teeth is relatively large, which will have a certain impact on the maneuverability of the rotary excavator.
Drill bit cutter: The drill bit cutter is suitable for excavating medium hard rock layers. Its characteristics are strong rock breaking ability, fast drilling speed, and replaceable bit parts, with low maintenance costs. However, the cutting effect of the drill bit on soft rock layers is not satisfactory.
Ball tooth cutter: Ball tooth cutter is suitable for excavation of various rock layers, especially for excavation of soft rock layers. Its characteristics are fast drilling speed, less disturbance to rock layers, and uniform force distribution on the surface of the ball teeth, which is conducive to extending the service life. However, the price of ball tooth cutters is higher and their excavation effect on harder rock layers is not as good as that of scraper cutters.
Wear resistant cutting teeth: Wear resistant cutting teeth are added with a layer of wear-resistant coating on the basis of ordinary cutting teeth to improve their wear resistance. Its characteristic is to extend the service life of the cutting teeth to a certain extent, and it is suitable for excavation of various rock layers. However, the price of wear-resistant cutting teeth is relatively high, and the coating is easily affected by impact and friction.
Composite cutter: Composite cutter is a new type of cutter that combines the characteristics of scraper, drill bit, and ball tooth. Its characteristics are suitable for excavation of various rock layers, fast drilling speed, and long service life. However, the price of composite cutting teeth is relatively high and the production process is complex.
In summary, different types of rotary excavators have different characteristics and usage ranges. When choosing, it is necessary to comprehensively consider the actual situation in order to choose the appropriate type of cutting tooth. At the same time, in order to improve the service life of the cutting teeth and reduce maintenance costs, it is also necessary to strengthen the maintenance and upkeep of the cutting teeth.