Accupro 12176891 Corner Radius End Mill 0.0469 in 4 Flute

Product Description

The ACCUPRO 12176891 is a solid carbide corner radius end mill designed for precision milling in demanding metalworking and machining applications. Built from micrograin solid carbide and finished with an AlTiN (aluminum titanium nitride) coating, this tool handles high-temperature cutting environments with consistent edge integrity. The 0.0469 inch cutting diameter is paired with a 0.015 inch corner radius that reduces stress concentration at the cutting edge and extends tool life in side milling and profiling passes. With 4 flutes and a right-hand spiral flute direction, the tool balances chip evacuation with surface finish quality. It is single-end and centercutting, allowing plunge entry. Machinists and CNC operators in job shops, mold and die work, and precision component manufacturing are the primary users.

This end mill suits finish milling, slotting, and contour work in ferrous and non-ferrous metals, hardened steels, and high-temperature alloys where the AlTiN coating provides oxidation resistance and hardness at elevated cutting temperatures. The 0.0469 inch diameter is well suited for fine-feature work, narrow slots, and detailed profile passes where tight tolerances are required. With a 1/8 inch shank diameter and 1-1/2 inch overall length, it fits standard collet chucks and ER-style tool holders found on VMCs and CNC mills running light to medium material removal operations.

Key Features

• Micrograin solid carbide substrate for rigidity and wear resistance in hard materials
• AlTiN coating provides high-heat resistance and extends tool life in dry or minimal-coolant cutting
• 0.015 inch corner radius reduces edge chipping and improves surface finish on profiled walls
• 4-flute, right-hand spiral geometry balances chip clearance with finish quality
• Centercutting design allows direct plunge entry without pre-drilling
• Single-end configuration with 0.625 inch length of cut suits shallow-to-mid-depth passes

Compatibility

Designed as a direct-fit replacement or standard tooling selection for 1/8 inch ER collet chucks, end mill holders, and compatible tool holders on CNC vertical machining centers and manual mills requiring a 0.0469 inch diameter corner radius end mill.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Ensure the machine spindle is fully stopped and locked out before changing tooling. Seat the 1/8 inch shank fully into the collet or tool holder and torque the retention nut to the tool holder manufacturer specification. Verify runout with a dial indicator before beginning the cut, as micrograin carbide tools at this diameter are sensitive to excessive runout and lateral load.