Uncoated Carbide Step Drill High Speed CNC Drill Bits Customized Extra Long Life

High Speed Uncoated Carbide Step Drill Extra Long Life No Coating for Sharp Cutting CNC Use

Introduction:

Our High-Speed Uncoated Carbide Step Drill is engineered for precision and durability in demanding machining applications. Made from solid tungsten carbide (WC) without coatings, this step drill delivers exceptional sharpness, heat resistance, and extended tool life—ideal for high-speed CNC operations and manual use.

Features:

✔ Solid Tungsten Carbide Construction – Superior hardness (90-94 HRA) for wear resistance in hardened materials.

✔ Uncoated Design – Ensures razor-sharp cutting edges, reducing friction and material buildup (ideal for non-ferrous metals).

✔ High-Speed Performance – Optimized flute geometry for efficient chip evacuation at elevated RPMs.

✔ Multi-Diameter Steps – Single bit replaces multiple drill sizes (e.g., 4-12mm range in one tool).

✔ CNC & Handheld Compatible – Precision-ground for stability in CNC machines or handheld drills.

✔ Extra Long Tool Life – Carbide’s heat resistance minimizes wear, even in continuous operation.

Advantages:

No Coating = Sharper Cuts – Avoids edge rounding common with TiN/TiAlN coatings, critical for fine finishes.

Better for Sticky Materials – Prevents aluminum/copper from adhering to flutes.

Cost-Effective – Uncoated carbide lasts longer than HSS while being cheaper than coated carbide.

Applications:

• Metalworking: Drilling stainless steel, aluminum, brass, and thin sheet metal.

• Electronics: Precise holes in PCBs, fiberglass, and ceramic substrates.

• Automotive/Aerospace: Lightweight alloy machining and deburring.

• DIY & Maintenance: Versatile use for HVAC, plumbing, and repairs.

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)

Related products:

CHANGZHOU AMG PRECISION TOOL MANUFACTURING CO., LTD. is a leading manufacturer and solution provider specializing in high-performance carbide cutting tools for precision CNC machining applications. With a strong commitment to innovation and quality, we design and produce an extensive range of standard and custom cutting tools, including carbide drill bits, end mills, reamers, and complex non-standard forming tools tailored to meet the most demanding machining challenges.