Accupro 12183053 Corner Radius End Mill 3/8 in 4 Flute Carbide

Product Description

The ACCUPRO 12183053 is a solid carbide corner radius end mill designed for precision milling in metal and hard-material applications. It features a 3/8-inch mill diameter, a 1-1/8-inch length of cut, and a 0.03-inch corner radius that reduces stress concentrations at the bottom of milled features and extends tool life in high-feed operations. The 4-flute, right-hand spiral geometry and 40-degree helix angle promote efficient chip evacuation and smooth finishes. With a bright/uncoated finish, this end mill is suited for use in dry cutting or with coolant, and is typically installed by machinists and CNC operators working in production or toolroom environments.

This end mill is built for single-end use in corner-radius profiling, slotting, and peripheral milling operations. The centercutting design allows plunge entry, making it versatile across a range of milling strategies. The long-length flute configuration and 3-inch overall length make it appropriate for applications requiring extended reach into workpiece features. It is commonly used in job shops, aerospace component machining, and precision die and mold work where corner geometry control is critical.

Key Features

• 0.03-inch corner radius reduces tool stress and improves surface finish at feature transitions
• Micrograin solid carbide construction provides rigidity and wear resistance in hard materials
• 4-flute, right-hand spiral design with 40-degree helix for efficient chip evacuation
• Centercutting capability allows direct plunge entry without a pilot hole
• Bright/uncoated finish suitable for dry cutting or coolant-assisted operations
• Single-end configuration with long flute length for extended reach applications

Compatibility

Designed as an OEM-style replacement and standard tooling option for CNC machining centers and manual mills accepting a 3/8-inch shank diameter end mill holder.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Secure the shank in an appropriate collet or end mill holder rated for the 3/8-inch shank diameter, and verify runout before beginning a cut. Ensure the spindle and any power sources are fully locked out before changing tooling. Do not exceed the recommended depth of cut or feed rate for the workpiece material and tool diameter.