Accupro 12180843 Corner Radius End Mill 1/2 in 7 Flute Carbide

Product Description

The ACCUPRO 12180843 is a 7-flute solid carbide corner radius end mill designed for high-performance milling in demanding machining environments. Built from micrograin solid carbide and coated with nACRo for heat and wear resistance, this single-end tool features a 0.02 inch corner radius and a right-hand cutting direction with variable index geometry. It handles a 1/2 inch mill diameter with a 1-5/8 inch length of cut and a 4 inch overall length. The centercutting design allows plunge entry, making it a versatile option for profiling, slotting, and finishing passes. Machinists and CNC operators in job shops and production environments are the primary users.

This end mill is suited for milling operations on hardened steels, stainless alloys, high-temp alloys, and other difficult-to-machine materials where a standard end mill underperforms. The nACRo coating provides elevated oxidation resistance at high cutting temperatures, extending tool life in dry or minimum-quantity lubrication (MQL) setups. The 7-flute configuration and variable index spacing reduce harmonic chatter, improving surface finish on finishing passes. A 1/2 inch shank diameter fits standard ER collet chucks, hydraulic chucks, and shrink-fit toolholders commonly found in machining centers and VMCs.

Key Features

• 7-flute variable-index design reduces chatter and improves surface finish
• nACRo coating for high oxidation resistance and extended tool life in dry or MQL cutting
• Micrograin solid carbide substrate for rigidity and wear resistance
• 0.02 inch corner radius reduces stress concentration and improves edge strength at pocket corners
• Centercutting geometry enables plunge milling entry
• Right-hand spiral flute direction with right-hand cutting for standard CNC spindle compatibility

Compatibility

Designed as an OEM-style replacement or direct tooling option for 1/2 inch shank toolholders including ER collet chucks, hydraulic chucks, and shrink-fit holders used in vertical machining centers and CNC milling applications.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is fully stopped and the tool changer is disabled before inserting or removing the end mill from any toolholder. Use a calibrated torque wrench when tightening collet nuts to the toolholder manufacturer specification. Verify runout with a dial indicator after seating the tool to avoid premature edge wear or tool failure.