Accupro 12184578 Ball End Mill 0.1378 in 4 Flute Carbide

Product Description

The ACCUPRO 12184578 is a solid carbide ball end mill designed for precision milling operations in metal and composite materials. This single-end tool features a 0.1378-inch (3.50 mm) mill diameter with a 0.4724-inch (12.00 mm) length of cut and a 4-flute, right-hand spiral configuration. The 40-degree helix angle promotes smooth chip evacuation and reduces cutting forces at the tool tip. A TiCN coating increases surface hardness and wear resistance, extending tool life in ferrous and non-ferrous applications. Machinists and CNC operators in job shops, tool rooms, and production environments rely on this style of end mill for contour milling, slotting, and 3D profiling work.

This ball end mill suits CNC machining centers performing finish profiling, die and mold work, and complex 3D surface contouring where a precise ball-nose geometry is required. The micrograin carbide substrate supports higher feed rates and longer run times compared to standard carbide grades. The 4.00 mm (0.1575-inch) shank diameter fits standard collets and end mill holders commonly used on vertical and horizontal machining centers. Its regular-length profile makes it appropriate for general-purpose applications where extended reach is not required.

Key Features

• Ball-nose geometry suited for 3D contour milling and die work
• Micrograin solid carbide substrate for improved hardness and edge retention
• TiCN coating for enhanced wear resistance and reduced friction
• 40-degree right-hand helix with 4 spiral flutes for efficient chip evacuation
• Single-end design with right-hand cutting direction
• Regular-length profile for general-purpose CNC machining setups

Compatibility

Designed as a standard replacement or production end mill for CNC machining centers using collets or end mill holders sized for a 4.00 mm shank diameter.

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 state before changing tooling. Seat the shank fully in the collet or end mill holder and torque the retention mechanism per the toolholder manufacturer specifications. Verify runout with a dial indicator before beginning a production run to avoid premature tool wear or part inaccuracy.