20D Carbide deep hole drill with AlTiSiN coating for steel
Introduction:
Precision-engineered for extreme-depth drilling (20× diameter) in carbon steel, alloy steel, and stainless steel. Combining ultra-fine grain carbide with advanced coolant-through technology, these drills deliver unmatched stability, efficient chip evacuation, and exceptional tool life in demanding industrial applications.
Features:
1.20D Depth Ratio – Reliable performance for deep-hole drilling (up to 20× diameter)
2.Optimized Geometry – Parabolic flutes + split-point design for reduced thrust force and chip clogging
3.High-Pressure Coolant Channels – Internal coolant holes (dual/triple) for effective heat and chip
removal
4.Wear-Resistant Coating – AlTiSiN/AlCrN coatings for enhanced heat resistance (up to 900°C)
5.Rigid Shank Design – Precision-ground tolerance (h6) for minimal runout
Performance Advantages:
30% longer tool life vs. conventional carbide drills
Superior hole straightness (±0.1mm/100mm)
Reduced cycle time with aggressive feeds (up to 0.3mm/rev)
Typical Applications:
• Oil & gas (valve bodies, drilling components)
• Automotive (transmission shafts, hydraulic cylinders)
• Mold making (ejection pin holes, coolant channels)
• Energy (turbine blades, boiler tubes)
Detailed Pictures:
Our workshop:
Promotion policy:
Free sample: If clients can pay shipping fee, could get free samples (under
USD20) for testing.
Special offer for new customers: New clients can enjoy USD50 discount coupon for first order, if
the total order amount is more than USD500.
