Accupro 12182820 Square End Mill 0.2756 in 4 Flute Carbide

Product Description

The ACCUPRO 12182820 is a solid carbide square end mill designed for precision milling operations in ferrous and non-ferrous materials. Built to stub-length proportions, it offers increased rigidity in applications where tool deflection and chatter are concerns. The cutting diameter measures 0.2756 inches with a 0.4724-inch length of cut, and the shank diameter is 0.3150 inches. The four-flute, right-hand spiral geometry runs at a 40-degree helix angle, promoting efficient chip evacuation and smooth cutting action. The micrograin carbide substrate supports the higher speeds and feeds typical of modern CNC milling centers. This tool ships uncoated and is centercutting, allowing plunge entry into workpieces.

This end mill is suited for slot milling, profiling, and peripheral milling in a range of shop environments, from job shops running general-purpose work to production facilities handling tighter-tolerance components. The stub length configuration makes it a strong choice for setups with limited Z-axis clearance or where maximum rigidity is required to hold dimensional tolerances. It is compatible with standard 8 mm collets or end mill holders accepting a 0.3150-inch shank. CNC machining centers and manual knee mills with appropriate toolholding are typical use environments.

Key Features

• Solid micrograin carbide construction for rigidity and wear resistance
• 4-flute right-hand spiral geometry with 40-degree helix angle
• Centercutting design allows direct plunge entry
• Stub length for maximum tool rigidity and reduced deflection
• Uncoated finish suitable for use with cutting fluids on a broad range of materials
• Right-hand cut and right-hand flute configuration

Compatibility

Designed for use in standard end mill holders or collet chucks accepting a 0.3150-inch shank diameter. Suitable for CNC machining centers and manual milling machines configured for solid carbide tooling.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Secure the shank fully within the toolholder to the manufacturer-recommended gauge length before tightening. Verify runout with a dial indicator before beginning a cut. Follow the machine tool manufacturer and cutting tool supplier recommendations for speeds, feeds, and depth of cut appropriate to the workpiece material.