Accupro 12185140 Square End Mill 7/16 in 4 Flute Carbide

Product Description

The ACCUPRO 12185140 is a double-end, four-flute square end mill designed for precision milling operations in metal, composites, and engineered plastics. Manufactured from micrograin solid carbide, it delivers the rigidity and edge retention needed for demanding production environments. The 40-degree right-hand helix promotes efficient chip evacuation and reduces chatter during aggressive cuts. With a bright, uncoated finish, this end mill suits applications where coating buildup is a concern or where regrinding is anticipated. It is sized at 7/16 inches in diameter with a 7/8-inch length of cut, making it well suited to slotting, profiling, and peripheral milling in tight workspaces.

This end mill is intended for use in CNC machining centers, knee mills, and manual milling machines where a 1/2-inch shank is the standard collet size. The double-end configuration extends usable tool life, allowing machinists to flip and run the second cutting end before retiring the tool. With a regular-length designation and a 4-inch overall length, it fits standard tool holders without extended-reach adapters. Typical users include machinists and toolroom professionals working in job shops, aerospace component manufacturing, and general metalworking.

Key Features

• Micrograin solid carbide construction for superior hardness and wear resistance
• Double-end design doubles usable cutting life per tool
• 40-degree right-hand helix angle promotes smooth chip flow and reduces heat buildup
• Center-cutting capable, allowing plunge entry into workpieces
• Bright, uncoated finish suitable for ferrous and non-ferrous materials
• Tight mill diameter tolerance of +0.000 / -0.002 inches for consistent fit and finish

Compatibility

Designed for use in standard 1/2-inch collets and end mill holders on CNC and manual milling machines. No specific model compatibility data was provided; confirm collet and holder clearance before installation.

Installation Notes

Installation should be performed by a qualified machinist. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Seat the shank fully into the collet to the minimum engagement depth recommended by the holder manufacturer to prevent tool pullout. Inspect both cutting ends for chipping or damage before use, particularly when switching to the second end.