​1. Overview of WCMX and SPMT Inserts​
WCMX and SPMT are indexable carbide inserts designed for down-the-hole (DTH) drilling tools. They are widely used in mining, construction, and metalworking for efficient rock breaking and precision hole drilling. Both types excel in wear resistance and durability due to their tungsten carbide composition and advanced coatings

​2. Applications in Rock Drilling
WCMX: Ideal for concave or convex DTH bit designs in soft to medium formations. Its ballistic or spherical carbide buttons optimize rock penetration and cuttings removal

SPMT: Suited for flat or convex bit profiles in hard, abrasive rocks. The square shape provides stability and extended life in high-impact conditions

3.Selection Guidelines​

For challenging conditions:​ Choose SPMT inserts when working with tough materials (e.g., stainless steel, titanium);when you need superior hole quality (especially flat bottoms), for deep hole drilling, or when using high-rigidity machines like CNC machining centers

For efficiency and cost: WCMX inserts when machining cost is a priority, for large-diameter holes, when your machine has limited power, or when drilling common materials like standard steel and cast iron efficiently