Accupro 12277207 Ball End Mill 0.0550 in 4 Flute Carbide

Product Description

The ACCUPRO 12277207 is a miniature solid carbide ball end mill designed for precision milling operations requiring tight tolerances and fine detail work. With a 0.0550-inch cutting diameter and a 0.0820-inch length of cut (LOC), this tool is built for small-feature contouring, profiling, and 3D surface finishing. The four-flute geometry and 30-degree helix angle promote smooth chip evacuation and stable cutting action in ferrous and non-ferrous materials. Manufactured from micrograin solid carbide, the 12277207 delivers the rigidity and wear resistance needed for consistent performance in close-tolerance machining environments. Machinists and tool-and-die professionals are the primary users of this end mill.

This end mill is suited for use in CNC machining centers and manual mills where small-diameter tooling is required. The miniature series designation makes it appropriate for mold and die work, medical component machining, aerospace detail parts, and any application involving fine features or restricted access. The bright, uncoated finish makes it a strong choice for non-ferrous and non-abrasive workpiece materials. The 1/8-inch shank diameter is compatible with standard miniature collet systems and toolholders commonly found in precision machining setups.

Key Features

• 0.0550-inch ball nose cutting diameter for fine-feature and contour milling
• Micrograin solid carbide construction for high rigidity and extended tool life
• Four-flute design with 30-degree helix angle for smooth cutting and chip flow
• 0.0820-inch length of cut suited to shallow-pocket and surface-finishing passes
• Bright, uncoated finish for compatibility with non-ferrous and non-abrasive materials
• Single-end configuration with 1/8-inch shank for use with standard miniature collet systems

Compatibility

Designed as an OEM-style miniature ball end mill for use in CNC machining centers and precision mills equipped with 1/8-inch collet or toolholder systems.

Installation Notes

Installation should be performed by a qualified machinist following proper toolholder torque and runout verification procedures. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Verify collet condition and shank seating depth before engaging the cut. Refer to the machine manufacturer specifications and applicable shop safety standards when setting speeds and feeds for small-diameter carbide tooling.