Accupro 311208 Ball End Mill 1/2 in 4 Flute Solid Carbide

Product Description

The ACCUPRO 311208 is a solid carbide ball end mill designed for precision milling operations in ferrous and hardened materials. Built on the HS Series platform, it features a 1/2 inch cutting diameter, a 1 inch length of cut, and a 38 degree helix angle. The four-flute geometry combined with a variable index design reduces chatter and improves surface finish at higher feed rates. An AlTiCrN coating provides heat resistance and extended tool life in demanding cutting environments. The 1/2 inch straight-cylindrical shank and 3 inch overall length suit standard milling chucks and collet holders in CNC machining centers. Micrograin carbide substrate supports hardness and edge retention across long production runs.

This end mill is suited for profiling, slotting, and contouring operations in job shop and production machining environments. The single-end, right-hand cut configuration is the standard setup for CNC vertical and horizontal machining centers. The AlTiCrN coating makes it well-suited for cutting tool steels, stainless steels, and high-temperature alloys where heat generation at the cutting edge is a primary concern. Machinists running finish passes on complex 3D contours benefit from the ball nose profile and the variable index spacing that minimizes harmonic vibration.

Key Features

• 1/2 inch cutting diameter with ball nose profile for 3D contour work
• 4-flute, variable index geometry reduces chatter and improves finish
• AlTiCrN coating for high heat resistance and extended tool life
• 38 degree helix angle optimized for chip evacuation and cutting efficiency
• Micrograin solid carbide substrate for edge retention in hard materials
• Straight-cylindrical shank compatible with standard collets and milling chucks

Compatibility

Designed as a standard-shank replacement ball end mill for CNC machining centers using 1/2 inch collets or milling chucks; no specific model compatibility data was provided in the product input.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer guidelines for toolholder torque and runout limits. Confirm the spindle is fully stopped and the machine is in an energy-isolated state before changing tooling. Check collet or chuck condition and clean the shank and bore before seating the tool to ensure proper runout. Refer to the cutting tool manufacturer feed and speed recommendations for the specific workpiece material before starting the cut.