Accupro 12180831 Square End Mill 3/4 in 7 Flute Solid Carbide

Product Description

The ACCUPRO 12180831 is a solid carbide square end mill designed for precision milling operations in metal cutting applications. Built from micrograin carbide stock, it runs a 7-flute geometry with a 37.5-degree helix angle and a spiral flute configuration. The nACRo coating improves wear resistance and heat management at the cutting edge. At 0.75 inches in diameter with a 1.625-inch length of cut, this tool delivers aggressive material removal while maintaining tight tolerances. It is centercutting capable, allowing plunge entry, and cuts in a right-hand direction with right-hand flute orientation. Licensed machinists and CNC operators are the primary users.

This end mill is suited for high-speed finish and semi-finish milling in steel, stainless, and other ferrous alloys where tool life and edge integrity are priorities. The 7-flute configuration supports higher feed rates compared to standard 4-flute tools, making it effective in rigid, high-RPM CNC machining centers. With a 0.75-inch shank diameter and 4.0-inch overall length, it fits standard ER and side-lock toolholders common in vertical and horizontal machining center setups. The nACRo finish is particularly suited to dry or near-dry cutting strategies in hardened materials.

Key Features

• 7-flute spiral geometry supports higher chip loads and feed rates versus standard end mills
• nACRo coating provides wear resistance and thermal stability in ferrous cutting applications
• 37.5-degree helix angle reduces cutting forces and improves surface finish
• Centercutting design allows direct plunge entry without a pre-drilled pilot hole
• Micrograin carbide substrate maintains edge sharpness through extended run cycles
• Right-hand cut and right-hand flute orientation compatible with standard CNC spindle direction

Compatibility

Designed as a direct-fit replacement for 3/4-inch shank square end mills in standard ER collet chucks, milling chucks, and side-lock toolholders used in CNC vertical and horizontal machining centers.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully stopped and locked out before changing tooling. Verify collet or toolholder runout is within acceptable limits before tightening, as excessive runout will reduce tool life and surface finish quality. Confirm machine RPM and feed rate settings are appropriate for the workpiece material before initiating a cut.