SPMT180616EN-NB3 PR1230 Indexable Milling Insert | 4-Edge Square Face Milling Inser

Product Overview

SPMT180616EN-NB3 PR1230 is a high-performance indexable milling insert designed for medium to heavy-duty CNC milling operations. Featuring a square SPMT geometry with four cutting edges, this insert delivers excellent cost efficiency and consistent cutting performance.
The PR1230 PVD-coated grade offers outstanding wear resistance and edge strength, making it ideal for face milling and general plane milling of various steel materials.

Insert Geometry & Design Features

• SPMT Square Insert Design
  Four usable cutting edges maximize insert utilization and reduce tooling cost per edge.

• EN Cutting Edge Geometry
  Positive rake angle ensures smooth cutting action, reduced cutting forces, and improved machining stability.

• NB3 Chipbreaker
  Optimized for reliable chip control and smooth chip evacuation, especially in medium to heavy milling applications.

PR1230 Grade & Coating Benefits

• Advanced PVD Coating
  Enhances wear resistance and oxidation protection, suitable for dry or minimal lubrication machining.

• High Edge Toughness
  Minimizes the risk of chipping during interrupted or unstable cutting conditions.

• Extended Tool Life
  Reduces insert change frequency and improves overall productivity.

Suitable Workpiece Materials

• Carbon Steel

• Alloy Steel

• Pre-Hardened Steel

• Structural Steel

• Medium-Hard Mold Steel

Typical Applications

• CNC Face Milling

• Plane Milling

• Roughing and Semi-Finishing

• High-Efficiency Milling Operations

• Mass Production Machining

Key Advantages

• Four cutting edges for superior cost efficiency

• Stable cutting performance with consistent surface finish

• Excellent chip control for uninterrupted machining

• Wide application range for steel materials

• Ideal for CNC machining centers and automated production lines

Basic Specifications (Reference)

• Model: SPMT180616EN-NB3

• Grade: PR1230

• Insert Shape: Square

• Number of Cutting Edges: 4

• Application: Face Milling / Plane Milling / Rough Milling