Accupro 314865 Square End Mill 1/2 in 3 Flute Carbide Zrn

Product Description

The ACCUPRO 314865 is a solid carbide square end mill designed for precision milling operations in metalworking and machining environments. With a 1/2 inch diameter and a 1-1/2 inch length of cut, this single-end tool handles slotting, profiling, and peripheral milling across a range of workpiece materials. The 3-flute geometry paired with a 37-degree right-hand helix angle promotes efficient chip evacuation while maintaining a strong cutting edge. A ZrN (zirconium nitride) coating adds surface hardness and thermal resistance, extending tool life in dry or semi-dry cutting conditions. Machinists and CNC operators in job shops, aerospace, and general machining will find this a capable day-to-day tool.

This end mill is suited for use in vertical machining centers and CNC milling machines where a standard 1/2 inch shank toolholder is available. The micrograin carbide substrate supports higher speeds and feeds compared to standard carbide grades, making it appropriate for hardened steels, stainless alloys, and non-ferrous materials. The right-hand cutting direction and spiral flute type are standard configurations compatible with the majority of CNC and manual milling setups. It is a single-end tool, meaning it is not reversible, and is not configured with extended reach or a chipbreaker geometry.

Key Features

• Solid micrograin carbide construction for rigidity and edge retention
• ZrN coating provides thermal resistance and reduced friction at the cutting edge
• 37-degree helix angle supports efficient chip evacuation in moderate-to-deep cuts
• 3-flute design balances chip clearance and cutting edge strength
• Centercutting capable, allowing plunge entry into the workpiece
• Right-hand cut and right-hand flute direction compatible with standard CNC spindle rotation

Compatibility

Designed for use in standard 1/2 inch shank toolholders including collet chucks, end mill holders, and shrink-fit holders on CNC vertical machining centers and manual knee mills. Mill diameter tolerance is +0.000/-0.005 inches; shank diameter tolerance is +0.0001/-0.0004 inches.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Always power down and lock out the spindle before inserting or removing any cutting tool. Verify the toolholder bore is clean and free of chips before seating the shank, and confirm runout with a dial indicator after clamping. Do not exceed the toolholder manufacturer's torque specifications for the retention fastener or collet nut.