Custom 2 Flute Straight Flute Carbide Step Drill for Aluminum Multi Diameter Hole Cutting High Speed CNC Machining OEM ODM Support

Custom 2 Flute Straight Flute Carbide Step Drill for Aluminum Multi Diameter Hole Cutting High Speed CNC Machining OEM ODM Support

Introduction:

Our custom 2-flute straight flute carbide step drill is engineered specifically for high-efficiency aluminum machining, combining precision-ground tungsten carbide with an optimized straight flute design for superior chip evacuation. This specialized tool eliminates the need for multiple drill bit changes by creating multiple hole diameters in a single operation, significantly reducing cycle times in CNC machining centers and high-volume production environments.

Features:

✔ Premium Carbide Construction

• YG6X micro-grain tungsten carbide (0.5-0.8μm, 10% cobalt) for extended tool life

• No coating required – maximizes sharpness for aluminum and soft metals

✔ Optimized Straight Flute Design

• 2-flute geometry reduces cutting forces and prevents material adhesion

• High helix angle (30°-35°) for efficient chip ejection

• Polished flutes minimize friction and heat buildup

✔ Multi-Diameter Step Geometry

• Custom step configurations (e.g., 4mm → 6mm → 8mm in one tool)

• Precision-ground edges (±0.01mm diameter tolerance)

• Center-cutting capable for plunge drilling

✔ High-Speed Performance

• Stable at 15,000-30,000 RPM (diameter-dependent)

• Dry machining compatible (air blast recommended)

Advantages:

▶ 50% Faster Drilling vs conventional twist drills in 6061-T6 aluminum

▶ Burr-Free Hole Edges reduce secondary finishing

▶ 100K+ Hole Life in continuous production

▶ OEM/ODM Flexibility – fully customizable step profiles

Applications:

• Aerospace Manufacturing

  • Lightweight structural components (7075-T6)

  • Cooling channel hole patterns

  Automotive Production

  • EV battery housing drilling

  • Aluminum casting machining

  Electronics Cooling

  • Heat sink array drilling

  • Server chassis ventilation holes

  General Metalworking

  • Jig/fixture plate hole drilling

  • Multi-diameter fastener holes

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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