Professional Supplier CNC Tools Roughing End Milling 4F

What Is a Roughing End Mill?

A roughing end mill features special serrated or knurled cutting edges (often called “chip breakers”) that break up chips into smaller pieces, reducing cutting resistance and heat generation. This allows for deeper cuts at higher feed rates compared to standard end mills.

Key Features:

Serrated Cutting Edges (Chip Breakers)

• Reduces cutting force and vibration.

• Breaks chips into small segments for easier evacuation.

High Feed & Depth Capability

• Allows deeper axial cuts and faster material removal.

• Ideal for removing large volumes of stock efficiently.

Robust Tool Geometry

• Built with a stronger core and higher rigidity to withstand aggressive machining forces.

• Less prone to chipping or breakage during heavy cuts.

Applications:

• Rough machining of steels, stainless steel, titanium, and hard alloys.

• Pre-finishing passes on molds, dies, and structural components.

• High-volume machining in aerospace, automotive, and general metalworking.

Comparison: Roughing vs. Finishing End Mills

Available Types:

• Flat / Square roughers – for general-purpose slotting and contouring

• Ball nose roughers – for curved or 3D surface roughing

• Corner radius roughers – reduce chipping in hardened materials

• Coated roughers – e.g., TiAlN, AlTiN, Blue Nano for longer life and heat resistance

Best Practices:

• Use lower spindle speeds and higher feed rates than with finishing tools.

• Maintain proper chip evacuation—use air blast or coolant.

• Follow with a finishing end mill to achieve the final surface quality.