Accupro 12177156 Square End Mill 1/4 in 2 Flute Solid Carbide

Product Description

The ACCUPRO 12177156 is a solid carbide square end mill designed for precision material removal in ferrous and non-ferrous machining applications. The 0.25 inch cutting diameter and 0.50 inch length of cut are paired with a 40-degree helix angle and spiral flute geometry for efficient chip evacuation and smooth cutting action. Built from micrograin solid carbide, this two-flute, right-hand cut and right-hand flute end mill delivers rigidity and edge retention suited to high-tolerance work. It is centercutting, allowing plunge entry directly into the workpiece. Machinists and CNC operators install this tool in vertical machining centers, CNC mills, and manual knee mills.

This end mill is well suited to slotting, profiling, and pocketing operations in a shop environment. The 2.5 inch reach length and 4.0 inch overall length make it appropriate for extended-reach cuts where a standard-length tool cannot access the feature. The uncoated micrograin carbide substrate performs reliably in aluminum, brass, plastics, and softer steels. It ships individually and is intended for professional machining use in tool rooms, production shops, and maintenance environments.

Key Features

• Solid micrograin carbide construction for edge retention and dimensional stability
• 40-degree helix angle promotes efficient chip evacuation and reduced cutting forces
• Centercutting design allows direct plunge milling without a pre-drilled entry point
• Extended reach at 2.5 inches accommodates deep-pocket and hard-to-reach features
• Right-hand cut, right-hand flute configuration compatible with standard CNC and manual mill spindles
• Tight mill diameter tolerance of +0.000 / -0.002 inches supports close-tolerance work

Compatibility

Designed as an OEM-style replacement and standard tooling option for 0.25 inch shank collets and tool holders used in CNC vertical machining centers and manual milling machines accepting 1/4 inch shank end mills.

Installation Notes

Installation should be performed by a qualified machinist following standard toolroom practice. Ensure the machine spindle is fully stopped and locked out before inserting or removing any end mill. Use a properly sized collet or end mill holder torqued to the machine manufacturer's specification to prevent pullout during cutting. Confirm runout with a dial indicator before beginning a production cut, particularly given the tight shank diameter tolerance of -0.0001 / -0.0004 inches.