Accupro 12183502 Corner Radius End Mill 5/16 in 4 Flute

Product Description

The ACCUPRO 12183502 is a solid carbide corner radius end mill designed for precision milling operations in ferrous and non-ferrous materials. With a 5/16 inch (0.3125 inch) mill diameter, a 0.06 inch corner radius, and 4 spiral flutes in a right-hand cutting direction, this tool produces smooth, radiused edges at the base of milled features while reducing stress concentrations. The micrograin carbide construction provides the hardness and wear resistance needed for consistent performance in demanding machining environments. Licensed machinists and CNC operators rely on this style of end mill for profile milling, slotting, and finishing passes where a sharp inside corner is not permissible.

This end mill suits single-end, centercutting applications with a 1 inch length of cut and a 4 inch overall length. The 5/16 inch shank diameter matches standard collet and end mill holder setups commonly found on vertical machining centers and manual knee mills. The long-length configuration provides additional reach for deeper pockets and stepped features. The bright, uncoated finish makes it a practical choice for aluminum, brass, and other non-ferrous materials where coating adhesion is not required.

Key Features

• Solid micrograin carbide construction for hardness and edge retention
• 0.06 inch corner radius reduces stress concentrations at the base of milled pockets and slots
• 4 spiral flutes with right-hand flute direction and right-hand cutting direction
• Centercutting design allows plunge entry without a pre-drilled pilot hole
• Long-length body (4 inch OAL) provides reach for deeper pockets and stepped workpieces
• Bright, uncoated finish suited for non-ferrous materials and general-purpose milling

Compatibility

Designed as an OEM-style solid carbide corner radius end mill compatible with standard 5/16 inch collets and end mill holders used on CNC vertical machining centers and manual knee mills.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Seat the shank fully into a clean, properly sized collet or end mill holder and torque the retention mechanism per the toolholder manufacturer specifications. Inspect the corner radius and cutting edges for chips or damage before each use. Power down and lock out the spindle before any tool change.