In the operation of construction machinery such as excavators and loaders, the bucket teeth are the core components that directly contact the materials, and the choice of their type directly affects construction efficiency, equipment wear and tear, and operating costs. Choosing the right type can make excavation work twice as efficient, while choosing the wrong type can lead to frequent wear of the bucket teeth, wasted equipment power, and even safety hazards. This article will explain the mainstream bucket tooth types and their adaptation logic for different working conditions, helping you quickly find the optimal choice.
Core Classification
Split-type bucket teeth
Composed of two parts, the tooth head (working end) and the tooth base (connecting end), which are fixedly connected by a pin. The core advantage is convenient replacement.
When the tooth head wears out, there is no need to disassemble the entire tooth base; only the tooth head needs to be replaced. This significantly reduces downtime and maintenance costs, making it the mainstream choice in the engineering field today.
Integral bucket teeth
The tooth head and tooth base are molded as one piece, resulting in a robust structure and high load-bearing capacity. However, the disadvantage is the high maintenance cost. Once the tooth head wears out, the entire bucket tooth needs to be replaced.
It is suitable for heavy-load, high-frequency impact conditions, or scenarios with extremely high requirements for the strength of component connections (such as large-scale hard rock mining).
Mainstream types
Standard Tooth
Features a straight tooth profile with a flat cutting surface and a moderate tip angle (approximately 45°-60°). It boasts strong versatility, suitable for general working conditions involving soil, sand, gravel, and loose materials.
Balancing excavation efficiency and durability, it is the "all-purpose choice" for municipal infrastructure and earthwork projects.
Rock Tooth
With a thickened and widened tooth head and a rounded or blunt tip, it is mostly made of high-chromium alloy or wear-resistant alloy steel. After quenching treatment, its hardness can reach over 60HRC.
Its core advantages are impact resistance and wear resistance, capable of withstanding the extrusion and friction of hard rock and ore. It is ideal for heavy-duty working conditions such as mining, quarry crushing, and hard rock stripping.
Ice-Breaking Tooth
Characterized by a sharp and slender tip and a conical tooth body, it offers low cutting resistance.
Specifically designed for hard-to-excavate materials like frozen soil, ice and snow, and compact clay, it can quickly penetrate the material surface to improve crushing efficiency. It is commonly used in winter construction in northern regions and permafrost operations at high altitudes.
Wear-Resistant Tooth
Based on ordinary bucket teeth, it is enhanced with wear-resistant coatings such as tungsten carbide through processes like plasma spraying or laser cladding, or manufactured using bimetal composite casting technology.
This improves the tip wear resistance by more than 50%. It is suitable for high-wear working conditions such as sand and gravel yard loading, mine tailings transportation, and concrete waste crushing.
Small excavators (under 20 tons)：Including models like Komatsu SK60, Caterpillar 307D, and XGMA 806F. They are compatible with small standard teeth or ripper teeth, focusing on portability and flexibility, suitable for light-duty scenarios such as municipal works and agriculture.
Medium excavators (20-60 tons)：Including models like Hitachi ZX360, Komatsu SK350, Caterpillar 336, and Volvo EC360. For infrastructure projects, standard teeth are preferred (balancing efficiency and durability); for heavy-duty mining and quarry crushing, rock teeth are chosen (for impact resistance and wear resistance).
Large excavators (over 60 tons)：Represented by models like Hitachi ZX690, Komatsu SK700, Caterpillar 374, and Volvo EC700. They prioritize mining-grade rock teeth or super wear-resistant teeth, suitable for extreme conditions such as hard rock mining in large mines.
Loaders and similar loading equipment：Including models like LiuGong CLG856, LongGong LG855N, and Caterpillar 966M. Wide-body standard teeth or wear-resistant teeth are selected to enhance grabbing efficiency, cope with high-frequency friction, and are suitable for scenarios like material yards and port handling.
CNC machining Manufactruing process
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Mini excavators (under 20 tons)
Including models like Komatsu SK60, Caterpillar 307D, and XGMA 806F. They are compatible with small standard teeth or ripper teeth, focusing on portability and flexibility, suitable for light-duty scenarios such as municipal works and agriculture.
Medium excavators (20-60 tons)
Including models like Hitachi ZX360, Komatsu SK350, Caterpillar 336, and Volvo EC360. For infrastructure projects, standard teeth are preferred (balancing efficiency and durability); for heavy-duty mining and quarry crushing, rock teeth are chosen (for impact resistance and wear resistance).
Large excavators (over 60 tons)：
Represented by models like Hitachi ZX690, Komatsu SK700, Caterpillar 374, and Volvo EC700. They prioritize mining-grade rock teeth or super wear-resistant teeth, suitable for extreme conditions such as hard rock mining in large mines.
Loaders and similar loading equipment
Including models like LiuGong CLG856, LongGong LG855N, and Caterpillar 966M. Wide-body standard teeth or wear-resistant teeth are selected to enhance grabbing efficiency, cope with high-frequency friction, and are suitable for scenarios like material yards and port handling.