Accupro 12182550 Corner Radius End Mill 3/8 in 4 Flute Altin

Product Description

The ACCUPRO 12182550 is a solid carbide corner radius end mill designed for precision milling in ferrous and hard materials. It features a 3/8-inch diameter, a 0.015-inch corner radius, and a 4-flute right-hand spiral configuration with a 40-degree helix angle. The AlTiN coating improves heat resistance and extends tool life in high-temperature cutting environments. This is a single-end, centercutting tool, meaning it can plunge directly into material. It is used by machinists and tool-and-die professionals in CNC milling operations where corner radius blending and surface finish are critical.

This end mill is suited for slot milling, profiling, and contour operations on molds, dies, and precision components. The centercutting geometry supports both plunge and ramp entry. The 7/8-inch length of cut and 2-1/2-inch overall length make it appropriate for moderate-depth passes in vertical machining centers and CNC mills. It is a single-end tool packaged individually.

Key Features

• 3/8-inch milling diameter with a 0.015-inch corner radius for blended edge geometry
• 4-flute right-hand spiral design with a 40-degree helix angle for efficient chip evacuation
• AlTiN coating provides high-temperature oxidation resistance for extended tool life in hard materials
• Centercutting geometry allows direct plunge entry without a pre-drilled pilot hole
• Micrograin solid carbide substrate for rigidity and wear resistance
• Single-end configuration with a 3/8-inch straight shank for standard collet or end mill holder mounting

Compatibility

Designed as an OEM-style replacement or direct-fit tooling option for CNC vertical machining centers and manual mills accepting a 3/8-inch shank end mill holder or collet.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and the machine is in a safe state before changing tooling. Secure the shank fully within the collet or end mill holder to the recommended engagement depth and verify runout before beginning a cut. Follow applicable shop safety protocols and machine manufacturer guidelines for tool changes and speeds and feeds selection.