Accupro 12182733 Corner Radius End Mill 1/8 in 4 Flute

Product Description

The ACCUPRO 12182733 is a solid carbide corner radius end mill designed for precise milling operations in ferrous and non-ferrous materials. It carries a 0.02 inch corner radius and a micrograin carbide substrate, which supports sharper edges and longer tool life compared to standard carbide grades. The AlTiN coating adds thermal resistance and hardness, making this tool well-suited for dry or semi-dry cutting at elevated speeds. With 4 flutes and a 40-degree helix angle, it delivers efficient chip evacuation and a smooth surface finish. A licensed machinist or CNC programmer typically selects and runs this tool in a machining center or CNC mill.

This end mill fits stub-length applications where rigidity is a priority over reach. The 1/8 inch shank diameter and 1/4 inch length of cut make it appropriate for light profiling, slotting, and contouring passes in tight geometries. It is a single-end, centercutting tool with right-hand flute direction and right-hand cutting direction, so it can plunge directly into a workpiece. Typical applications include die and mold work, aerospace component finishing, and precision fixture machining where corner blending is required.

Key Features

• Solid micrograin carbide construction for edge retention in hard materials
• AlTiN coating for high-heat resistance and extended tool life in dry cutting
• 0.02 inch corner radius with a tolerance of plus or minus 0.0015 inches for consistent blend geometry
• 4-flute, 40-degree helix design promotes smooth chip flow and surface finish
• Centercutting geometry allows direct plunge entry without a pre-drilled pilot hole
• Stub length improves rigidity and minimizes deflection in precision cuts

Compatibility

Designed as an OEM-style replacement or standard tooling selection for CNC machining centers and manual mills using 1/8 inch tool holders or collets.

Installation Notes

Installation is performed by a machinist or CNC setup technician. The machine spindle must be fully stopped and the tool holder released before changing tooling. Verify collet or chuck runout is within acceptable limits before seating the shank, as excessive runout accelerates edge wear on small-diameter end mills. Follow the machine manufacturer and tooling supplier feed and speed recommendations for the specific workpiece material and coating type.