Accupro 12183710 Corner Radius End Mill 3/8 in 4 Flute Altin

Product Description

The ACCUPRO 12183710 is a solid carbide corner radius end mill designed for precision milling operations in ferrous and hard metals. With a 3/8-inch diameter, a 0.03-inch corner radius, and an AlTiN (aluminum titanium nitride) coating, this tool resists heat buildup and extends tool life in demanding cutting environments. The 40-degree helix angle promotes efficient chip evacuation and smooth cutting action. A 1-1/2-inch length of cut and 6-inch overall length make it well-suited for extra-long reach applications where standard-length tooling cannot access the workcut zone. Micrograin carbide substrate provides the hardness and edge retention needed for high-speed and high-feed strategies.

This end mill is used in CNC machining centers for profiling, slotting, and contouring operations where a radiused corner is required to reduce stress concentrations in the finished workpiece. The single-end, centercutting design allows plunge entry and full side-milling capability. Right-hand flute direction and right-hand cutting geometry make it compatible with standard spindle configurations. It is commonly applied in tool-and-die, mold machining, aerospace component finishing, and general precision metalworking.

Key Features

• AlTiN coating for high-temperature resistance and extended tool life in ferrous alloys
• Micrograin solid carbide substrate for superior hardness and edge stability
• 0.03-inch corner radius reduces stress risers and improves surface finish at part edges
• 40-degree helix angle promotes aggressive chip evacuation and reduces cutting forces
• Centercutting design allows direct plunge entry without a pre-drilled hole
• Extra-long 6-inch overall length provides reach for deep-cavity and extended-projection setups

Compatibility

Designed as an OEM-style replacement and standard-fit corner radius end mill for CNC machining centers and manual mills accepting a 3/8-inch straight shank toolholder.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is fully stopped and locked out before loading or removing the tool. Seat the shank fully into a clean, undamaged collet or end mill holder and torque the retention mechanism per the toolholder manufacturer specification. Verify runout with a dial indicator before committing to a full-depth cut, particularly given the extended overall length.