Accupro 12177321 Corner Radius End Mill 0.8 Mm 2 Flute Carbide

Product Description

The ACCUPRO 12177321 is a solid carbide corner radius end mill designed for precision milling operations requiring a controlled edge geometry at small diameters. It features a 0.8 mm mill diameter with a 0.1 mm corner radius and a 2-flute, right-hand spiral configuration with a 30-degree helix angle. The single-end, centercutting design allows plunging and slotting in tight geometries. Built from micrograin solid carbide with a bright uncoated finish, this tool is suited for machinists and tool and die professionals working in high-precision, small-feature applications where dimensional accuracy and edge integrity are critical.

This end mill is intended for use in CNC machining centers and manual mills where fine detail work, small-pocket milling, or contour finishing is required. The extended reach configuration, with a 5 mm reach length and 4 mm shank diameter, allows access to features with restricted clearance. The 0.8 mm length of cut is optimized for shallow passes in hardened or abrasive materials where micrograin carbide substrates provide wear resistance and edge stability.

Key Features

• 0.8 mm mill diameter with 0.1 mm corner radius for precise edge blending and reduced stress concentration
• Micrograin solid carbide construction for superior hardness and wear resistance at small diameters
• 2-flute, right-hand cut, right-hand spiral design with 30-degree helix angle for efficient chip evacuation
• Centercutting capability allows direct plunge entry into workpiece material
• Extended reach with 5 mm reach length for access to recessed or deep-pocket features
• Bright uncoated finish suitable for a broad range of materials without coating compatibility concerns

Compatibility

Designed as an OEM-style replacement or direct-use end mill for CNC machining centers and manual mills accepting a 4 mm straight shank. Suitable for use in collet chucks and end mill holders sized for 4 mm shank tooling.

Installation Notes

Installation should be performed by a qualified machinist familiar with small-diameter tooling procedures. Ensure the spindle is fully stopped and locked before inserting or removing the tool from the holder. Verify collet size matches the 4 mm shank diameter and that runout is minimized to protect the tool at this diameter. Avoid excessive overhang beyond the specified reach length, as small-diameter carbide tools are brittle and susceptible to breakage under lateral loading.