Accupro 315021 Square End Mill 3/4 in 3 Flute Solid Carbide

Product Description

The ACCUPRO 315021 is a solid carbide square end mill designed for precision milling operations in metal and composite materials. With a 3/4 inch diameter and 2-1/2 inch length of cut, it delivers aggressive material removal while maintaining tight tolerances. The ZrN (zirconium nitride) coating improves surface hardness and heat resistance, extending tool life in demanding applications. Three spiral flutes with a 37-degree helix angle promote efficient chip evacuation and reduce cutting forces. Micrograin carbide construction provides the edge retention needed for ferrous and non-ferrous machining. This tool is sold individually and suited for use on CNC machining centers and manual knee mills.

This end mill is used in general-purpose milling, slotting, profiling, and peripheral cutting applications. Its centercutting geometry allows plunge entry, making it suitable for pocketing operations without a pre-drilled hole. Right-hand cut and right-hand flute configuration matches standard spindle rotation on most vertical machining centers. It is commonly specified for production shops, tool rooms, and maintenance machining environments where solid carbide tooling is preferred over HSS for speed and accuracy.

Key Features

• 3/4 inch mill diameter with micrograin solid carbide construction for edge retention
• ZrN coating provides heat and wear resistance in ferrous and non-ferrous applications
• 37-degree helix angle on spiral flutes for efficient chip evacuation
• Centercutting design allows direct plunge entry for pocketing operations
• Right-hand cut and right-hand flute for standard CNC spindle compatibility
• Mill diameter tolerance of +0.000 / -0.005 inches for consistent fit in collets and holders

Compatibility

Designed as an OEM-style solid carbide square end mill suitable for use in standard 3/4 inch collet chucks, end mill holders, and hydraulic toolholders on CNC vertical machining centers and manual mills.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is fully stopped and locked before inserting or removing the end mill from the holder. Clean the shank and toolholder bore before seating to maintain runout tolerances. Follow shop-standard torque procedures for the toolholder type in use and verify runout with a dial indicator before beginning a cut.