Iscar 3399360 Ball End Mill 0.25 in 3 Flute Solid Carbide

Product Description

The ISCAR 3399360 is a solid carbide ball end mill designed for precision milling operations in metalworking and machining applications. Built on the Flash Solid series platform, it features a 0.25 inch cutting diameter with three flutes and a 45-degree helix angle. The DLC (Diamond-Like Carbon) coating reduces friction and increases tool life in demanding cutting conditions. With a right-hand cutting and right-hand flute direction, this single-end tool is suited for finishing and semi-finishing passes where surface quality and dimensional accuracy are critical. Licensed machinists and CNC operators are the primary installers and users of this tooling.

This ball end mill is commonly used in CNC machining centers and manual mills for contouring, slotting, and 3D profiling of ferrous and non-ferrous materials. The 0.75 inch length of cut and 2.5 inch overall length make it well-suited for moderate-depth cavity work and die-mold applications where a compact reach is appropriate. The variable index geometry helps reduce harmonic vibration during aggressive cutting passes, improving finish quality and tool stability.

Key Features

• 0.25 inch diameter ball end profile for contouring and 3D surface milling
• 3-flute solid carbide construction for rigidity and wear resistance
• DLC coating reduces friction and extends tool life in dry and semi-dry cutting
• 45-degree helix angle improves chip evacuation and cutting efficiency
• Variable index flute spacing reduces chatter and vibration
• Single-end design with right-hand cut and right-hand spiral flute direction

Compatibility

Designed as an OEM-specification solid carbide ball end mill in the ISCAR Flash Solid series, compatible with standard 1/4 inch diameter collets and end mill holders on CNC machining centers and manual milling machines.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Ensure the machine spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Seat the 0.25 inch shank fully and evenly in a matched collet or end mill holder to the recommended engagement depth for the holder type in use. Verify runout with a dial indicator before beginning production cuts.