Accupro 12182146 Corner Radius End Mill 3/4in 3 Flute Altin

Product Description

The ACCUPRO 12182146 is a solid carbide corner radius end mill designed for precision milling operations in metalworking and machining environments. It features a 3/4 inch diameter, a 1-1/2 inch length of cut, and a 0.06 inch corner radius that produces controlled edge breaks and radius profiles in a single pass. The AlTiN coating provides high heat resistance and extends tool life in ferrous and hardened materials. With 3 flutes, a 40-degree helix angle, and a right-hand cutting direction, this end mill delivers efficient chip evacuation and smooth surface finishes. It is a single-end, centercutting design, meaning it can be used for plunge cuts as well as peripheral milling. Machinists and CNC operators in job shops, production facilities, and tool rooms are the primary users.

This end mill is suited for milling slots, pockets, and contoured profiles where a consistent corner radius is required. The 3/4 inch shank diameter matches the cutting diameter, making it compatible with standard ER and end mill holders of that size. The 4 inch overall length gives adequate reach for moderate-depth setups without introducing excessive overhang. It is appropriate for use on CNC machining centers and manual knee mills running ferrous metals, stainless steel, and high-temperature alloys where AlTiN coating performance is advantageous.

Key Features

• Solid micrograin carbide construction for rigidity and wear resistance in hard materials
• AlTiN coating for elevated heat resistance and extended tool life in ferrous and hardened stock
• 0.06 inch corner radius with a tolerance of plus or minus 0.0015 inches for repeatable profile accuracy
• Centercutting design allows plunge entry without a pre-drilled starting hole
• 40-degree helix angle promotes efficient chip evacuation and reduces cutting forces
• Right-hand flute direction and right-hand cutting for standard spindle operation

Compatibility

Designed for use in standard 3/4 inch end mill holders and collet chucks on CNC machining centers and manual milling machines; no specific OEM or model compatibility is stated by the manufacturer for this tool.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Ensure the spindle is fully stopped and the machine is locked out before changing tooling. Seat the shank fully into the holder and torque the retention mechanism to the holder manufacturer's specification. Verify runout with a dial indicator before beginning a cut, as excessive runout will accelerate wear and degrade corner radius accuracy.