Accupro 312620 Corner Radius End Mill 1/2 in 7 Flute Carbide

Product Description

The ACCUPRO 312620 is a solid carbide corner radius end mill designed for precision milling operations in ferrous and hard materials. It features a 1/2 inch diameter, a 3/4 inch length of cut, and a 0.030 inch corner radius that reduces stress concentration at the cutting edge and extends tool life. The 7-flute geometry with a 38-degree helix angle improves chip evacuation and surface finish in high-speed, high-feed applications. An AlCrTiN coating provides thermal and oxidation resistance, making this tool well suited for dry or near-dry machining. This end mill is installed by machinists and CNC operators working in production and job-shop environments.

The 312620 is built for use in CNC machining centers and manual mills where a corner radius profile is required to reduce edge chipping or produce a radiused floor fillet. Its single-end, straight-cylindrical shank fits standard 1/2 inch collets and end mill holders. The non-centercutting design means it is intended for peripheral and side milling, slot entry from an existing clearance, or ramping operations where plunge cutting is not required. Right-hand flute direction and right-hand cutting orientation are standard for conventional CNC spindle configurations.

Key Features

• 7-flute design increases feed rate potential and improves surface finish compared to lower-flute-count equivalents
• 38-degree helix angle promotes efficient chip evacuation and reduces cutting forces
• 0.030 inch corner radius minimizes edge chipping and produces radiused floor fillets
• AlCrTiN coating provides high-temperature and oxidation resistance for dry or minimal-coolant machining
• Micrograin solid carbide substrate delivers rigidity and wear resistance in demanding materials
• Non-centercutting, single-end configuration with straight-cylindrical shank for standard collet compatibility

Compatibility

Designed for use in CNC machining centers and manual mills equipped with 1/2 inch collet chucks or end mill holders accepting a straight-cylindrical shank. Part of the ACCUPRO Series HS line.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Seat the shank fully into the collet or holder to the recommended engagement depth per the holder manufacturer specifications. Because this tool is non-centercutting, program tool paths to avoid direct plunge entry into solid material without a pre-drilled hole or ramp entry.