Accupro 12184221 Ball End Mill 5/16 in 2 Flute Solid Carbide

Product Description

The ACCUPRO 12184221 is a single-end ball end mill designed for contour milling, profiling, and 3D surfacing operations on machining centers and CNC mills. Built from micrograin solid carbide and coated with TiCN, this tool delivers edge hardness and wear resistance well above standard HSS tooling. The 0.3125-inch (5/16 inch) cutting diameter pairs with a 1.125-inch length of cut, giving machinists reach for moderate-depth passes without sacrificing rigidity. The 40-degree helix angle promotes smooth chip evacuation and reduces chatter. Licensed machinists and CNC operators install this tool for finish and semi-finish cuts in ferrous and non-ferrous materials.

This ball end mill suits production and job-shop environments where close-tolerance contouring is required. The 5/16-inch shank diameter fits standard collets and end mill holders on vertical machining centers, CNC routers, and manual knee mills. The long-length configuration with a 3-inch overall length provides clearance for deeper cavity work or stepped-feature access. Right-hand cut and right-hand spiral flute geometry make it compatible with conventional CNC spindle rotation. It is sold as a single-end tool, meaning only one cutting end is present.

Key Features

• Micrograin solid carbide construction for superior hardness and edge retention
• TiCN coating increases surface hardness and reduces friction at the cutting edge
• 40-degree helix angle promotes efficient chip evacuation and reduces vibration
• 2-flute design provides clearance for chip flow in slotting and profiling cuts
• Right-hand cut with right-hand spiral flute geometry for standard CNC spindle use
• Long-length body (3 inches OAL) allows access to deeper features and cavities

Compatibility

Designed as an OEM-style cutting tool for use in standard 5/16-inch collets and end mill holders on CNC machining centers and manual mills with right-hand spindle rotation.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Secure the shank fully into a clean, undamaged collet or end mill holder and torque the retention mechanism to the machine manufacturer's specification. Inspect the cutting edges for chips or coating damage before use. Never exceed the tool manufacturer's recommended speeds and feeds for the workpiece material and coating type.