Accupro 12276934 Ball End Mill 0.0410 in 4 Flute Carbide

Product Description

The ACCUPRO 12276934 is a miniature solid carbide ball end mill designed for precision milling operations in tight geometries and small-feature work. With a 0.0410-inch cutting diameter, 4-flute construction, and a 30-degree helix angle, this tool delivers smooth chip evacuation and stable cutting action in ferrous and non-ferrous materials. The micrograin carbide substrate provides edge retention and rigidity at small diameters where high-speed steel tools fall short. It is intended for use by machinists and tool-and-die professionals on CNC machining centers and manual mills requiring fine-detail capability.

This end mill is suited for profiling, slotting, and 3D contouring in mold and die work, medical component machining, and precision aerospace applications where small radii and tight tolerances are required. The single-end, right-hand cutting configuration is standard for CNC milling setups. The miniature series designation indicates this tool is engineered for sub-1/8-inch diameter work where rigidity-to-size ratio is critical. A 1/8-inch shank allows use in standard collet chucks without adapters.

Key Features

• 0.0410-inch ball nose diameter for fine-feature milling and small-radius profiling
• 4-flute spiral design with 30-degree helix angle for smooth chip flow and reduced chatter
• Micrograin solid carbide construction for superior edge retention at miniature scale
• Bright/Uncoated finish suitable for use with or without cutting fluid across a range of materials
• 1/8-inch shank diameter fits standard ER and precision collet systems
• Single-end, right-hand cut and right-hand flute — compatible with conventional CNC mill spindle direction

Compatibility

Designed as an OEM-style miniature ball end mill for use in standard 1/8-inch collet chucks on CNC machining centers and manual milling machines requiring precision small-diameter tooling.

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 and torque the collet nut per the collet system manufacturer specifications. Confirm runout with a dial indicator before beginning a cut, as runout tolerance is especially critical at sub-0.050-inch diameters.