35° Helix 12mm Long Flute Length Combined Heavy Duty and finishing CNC Milling Cutter l

Introduction:

A high-performance CNC milling cutter designed for both aggressive roughing and precision finishing in steels, stainless, and alloys.

Features:

Core Geometry

▸ Cutting Diameter: 12.00mm (-0.01mm tolerance)

▸ Flute Length: 12mm (1:1 ratio for stability)

▸ Overall Length: 65mm (2.56")

▸ Helix Angle: 35° (optimized for both MRR and finish)

▸ Flute Design:

• 4 flutes with variable pitch (30°/40° spacing)

• 0.3mm corner radius (standard)

• 12° primary relief angle

Material & Coatings

▸ Substrate: Ultra-fine grain carbide (0.5µm) with 8% cobalt

▸ Coating Options:

• AlTiN-Saturn (for hardened steels up to HRC 60)

• TiSiN-Tiger (for high-temp alloys)

• DLC (for non-ferrous finishing)

Dual-Purpose Features

1. Roughing Capabilities:

   • 40% stronger core vs standard end mills

   • Chip breaker geometry near shank

   • Up to 12mm full-slotting in 4140 steel

1. Finishing Capabilities:

   • Mirror-polished rake face (Ra 0.05µm)

   • Precision edge preparation (0.02mm hone)

   • ≤ 0.005mm runout tolerance

Detailed Pictures:

Our workshop:

Promotion policy:

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!

Other products:

FAQ:

1. Are you a manufacturer or trading company?

We are a professional manufacturer of carbide tools which established in 2017.

2. Which CNC grinding machine do you use?

All of our carbide tools are produced by imported WALTER grinding machines.

3. Which shipping method do you usually use?

We usually send goods by express like FedEx, UPS, DHL, TNT, EMS, ETC.

We also can send products to your shipping agent in China.

  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.