Seco 03083825 Ball End Mill 3/16 in 4 Flute Carbide Altin

Product Description

The SECO 03083825 is a solid carbide ball end mill designed for high-performance milling in demanding material applications. Part of the STB440.2 series, it features a 3/16 inch (0.1875 inch) mill diameter with a matching 3/16 inch straight cylindrical shank, a 3/8 inch length of cut, and a 2 inch overall length. The four-flute, single-end design uses a variable helix spiral flute geometry to reduce chatter and improve chip evacuation. An AlTiN PVD coating adds heat resistance and surface hardness, extending tool life when cutting abrasive or high-temperature alloys. Machinists and tool-and-die tradespeople select this mill for precision short-reach work where rigidity is critical.

This end mill is engineered for roughing and finishing operations in stainless steel, superalloys, titanium, and other hard materials. Its micrograin carbide substrate and variable helix geometry make it well suited to demanding production environments where tool life and dimensional accuracy are priorities. The short length classification improves stability in setups where minimizing overhang reduces deflection and maintains tight tolerances. Right-hand cutting and right-hand flute direction are standard for conventional CNC milling center spindles.

Key Features

• Solid micrograin carbide substrate for rigidity and wear resistance in hard materials
• AlTiN PVD coating enhances heat resistance and tool life in stainless steel, superalloys, and titanium
• Variable helix spiral flutes reduce chatter and improve chip evacuation
• Four-flute, single-end configuration supports both roughing and finishing passes
• Ball nose geometry with 0.0938 inch nose radius for contoured and 3D surface work
• Short series design improves rigidity and minimizes deflection at the cutting zone
• Mill diameter tolerance of +0.0000 / -0.0020 inch for close-tolerance fitment

Compatibility

Designed as a direct-fit replacement for applications calling for Series STB440.2 tooling, catalog number STB440.2-0.188-D2-B.0-Z4. Suited for use in standard CNC machining centers and manual mills with ER or straight-bore collet systems accepting a 3/16 inch shank diameter.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Ensure the machine spindle is fully stopped and locked out before changing tooling. Verify collet bore and pull stud specifications match the shank diameter and confirm runout does not exceed the 0.0005 inch TIR maximum before beginning a cut. Follow the machine tool manufacturer guidelines and applicable shop safety standards when setting feeds, speeds, and depth of cut for the workpiece material.