Carbide Step Drill Bit With AlTiN Coating Spiral Flute Internal
Coolant For Hard Metals
Introduction:
Engineered for extreme performance in hard metal machining, this carbide step drill bit features a wear-resistant AlTiN coating, high-efficiency spiral flutes, and precision internal coolant channels to conquer the most challenging drilling applications.
Features:
✔ Advanced AlTiN Coating
Withstands temperatures up to 800°C
Provides superior abrasion resistance for extended tool life
Ideal for dry or semi-dry machining conditions
✔ Optimized Spiral Flute Design
30°-45° helix angle for improved chip evacuation
Reduces cutting forces and prevents chip clogging
Delivers smoother surface finishes vs. straight flute designs
✔ Internal Coolant System
2-4 coolant holes (Ø1.0-1.5mm) direct lubricant to cutting edges
Enables higher feed rates and deeper hole drilling
Prevents workpiece hardening in heat-sensitive alloys
✔ Solid Micro-Grain Carbide Substrate
Sub-micron carbide grain structure for exceptional hardness
Maintains edge integrity in materials up to HRC 65
3-5× longer lifespan than HSS or TiN-coated tools
✔ Multi-Step Geometry
Eliminates tool changes for tapered holes, countersinking, and deburring
Precision ground cutting edges for ±0.02mm dimensional accuracy
Advantages:
50% Higher Cutting Speeds vs. conventional coated drills
Exceptional Chip Control in gummy materials like Inconel and titanium
Reduced Power Consumption due to efficient cutting geometry
Interchangeable with standard ER collet and hydraulic chucks
Applications:
Aerospace - Drilling turbine blades, engine components
Medical Devices - Precision holes in surgical implants
Die/Mold Making - Hardened steel cavities (HRC 50+)
Energy Sector - Valve bodies, drilling equipment
Automotive - Transmission gears, turbocharger parts
Detailed Pictures:
Our workshop:
New Customer Special Offers:
To help you experience our premium products, we’re excited to offer
the following exclusive promotions for first-time buyers:
1.Free Test Samples
Get free samples (total value ≤ $20 USD) when you cover the international shipping cost.
Perfect for evaluating our product quality and performance
risk-free.
2.$50 USD Discount on First Order
New customers can enjoy a $50 discount on the first order of $500 or more.
A great way to start our partnership with extra value!
Our advantages:
1.Advanced grinding machines: All of our grinding machines are WALTER and SAACKE brands.
2.Advanced inspection machines: We have ZOLLER, OMEGA, PG1000, etc. For inspecting each carbide
tools.
3.Fast feedback: we offer 24 hours online service
4.Strict quality control system:
We strictly adhere to a three-stage inspection process for each
tool:
Raw material inspection
Semi-finished product inspection after production
Final inspection after coating (pre-shipment check)
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