Shallow Hole Drilling Inserts

1. By Insert Shape & Cutting Edges

1.1 WCMX / WCMT Triangular Inserts

• 3 usable cutting edges
• Sharp positive rake angle, low cutting resistance, high feed rate
• Ideal for rough drilling of carbon steel, alloy steel, stainless steel and cast iron

1.2 SPMG Square Inserts

• 4 usable cutting edges for better cost efficiency
• High rigidity, stable drilling entry, flat and smooth blind hole bottom
• Suitable for heavy rough drilling and precision blind hole bottom finishing

1.3 Special Geometry Inserts

2. By Chip-Breaker Groove

1. General-purpose chip-breaker: Balanced performance for steel and cast iron, rough & medium finishing
2. TC tiny chip groove: Breaks long continuous chips, perfect for stainless steel and low-carbon steel
3. FB flat-bottom groove: Specialized for clean blind hole bottoms without secondary facing
4. RN high-rake light-cut groove: Low cutting force, applicable to aluminum alloy and thin-wall workpieces

3. By Machining Type

Rough Drilling Inserts

Finishing Drilling Inserts

Special Application Inserts

• NP notch point inserts: Improve hole position accuracy for spot drilling
• SS structural steel inserts: Anti-burr design for steel plate and section steel
• TW thin-wall inserts: Low cutting pressure to avoid thin-part deformation

4. By Carbide Substrate & Coating

Substrate

1. Tough medium-grain carbide: Anti-chipping, for rough and interrupted cutting
2. Wear-resistant fine-grain carbide: High hardness for finishing and continuous cutting
3. Uncoated polished blank: Low friction, exclusively for aluminum, copper and non-ferrous metals

Coatings

1. PVD AlTiN / TiAlN: High temperature resistance, universal for steel, stainless steel and high-temperature alloys
2. CVD TiCN / TiN: Thick wear-resistant coating for rough machining of cast iron and low-alloy steel
3. CrN coating: Anti-adhesion, prevents built-up edge on stainless steel and soft steel

5. By Matching Hole Depth (2D~5D shallow hole standard)

1. 2D–3D ultra-shallow hole inserts: Ultra-rigid structure for short blind holes and spot facing
2. 4D–5D medium shallow hole inserts: Optimized chip grooves for smooth chip evacuation in slightly deeper shallow holes