Accupro 12182747 Square End Mill 0.1575 in 4 Flute Carbide

Product Description

The ACCUPRO 12182747 is a solid carbide square end mill engineered for precision milling in ferrous and non-ferrous materials. It features a 0.1575-inch cutting diameter, a 0.315-inch length of cut, and four spiral flutes ground from micrograin carbide stock. The AlTiN coating adds thermal resistance, extending tool life in high-speed and dry-cutting applications. The 40-degree helix angle promotes efficient chip evacuation and reduces cutting forces. This is a centercutting tool, allowing plunge entry into workpieces. It is sized as a stub-length end mill, which improves rigidity and reduces deflection in close-tolerance work.

This end mill is suited for finish and semi-finish milling operations on machining centers, CNC mills, and manual knee mills. The stub length and 4-mm shank diameter make it well-matched for small-bore work, detail profiling, slotting, and side milling. Right-hand cut and right-hand flute geometry follow standard spindle conventions. The AlTiN finish makes it a practical choice when cutting hardened steels, stainless alloys, cast iron, and titanium at elevated surface speeds without flood coolant.

Key Features

• 0.1575-inch (4 mm) cutting diameter with stub-length geometry for maximum rigidity
• 4-flute spiral design with 40-degree helix angle for aggressive chip evacuation
• AlTiN coating provides high-temperature resistance for dry and hard-material cutting
• Centercutting capable — supports plunge milling and ramping entry
• Micrograin solid carbide substrate for sharp edge retention and reduced wear
• Right-hand cut, right-hand flute — compatible with standard CNC and manual spindle rotation

Compatibility

Designed as a direct-fit stub-length square end mill for any spindle accepting a 4-mm (0.1575-inch) shank diameter, within a shank tolerance of -0.0001 to -0.0004 inches.

Installation Notes

Installation is performed by machining professionals using an appropriate collet or end mill holder sized for the 4-mm shank. Verify runout at the spindle before cutting to stay within the mill diameter tolerance of +0.000/-0.002 inches. Ensure the tool is fully seated and the set screw or collet nut is properly torqued per the toolholder manufacturer's specification. Inspect the cutting edges and coating for chips or wear before each use, and do not exceed the manufacturer's recommended depth-of-cut for the workpiece material.