Seco 03083828 Ball End Mill 3/8 in 4 Flute Solid Carbide Altin

Product Description

The SECO 03083828 is a solid carbide ball end mill from the STB440.2 series, engineered for demanding metal removal in milling applications. The tool measures 3/8 inches in diameter with a matching 3/8 inches straight-cylindrical shank and a 2.5 inches overall length. The 3/4 inches length of cut is supported by four flutes with a variable helix geometry at 40 degrees, promoting chip evacuation and reducing chatter during aggressive cuts. An AlTiN PVD coating extends tool life when working in high-heat environments. The micrograin carbide substrate supports both roughing and finishing passes in a single tool, making it a practical choice for machinists running tight schedules on difficult materials.

This end mill is designed for milling stainless steel, high-temperature alloys, and hardened materials — workpiece material codes M, S, and H. Its center-cutting capability allows direct plunging, and the right-hand cutting and flute direction make it compatible with standard CNC vertical and horizontal machining centers. The short length type and zero neck length keep deflection low in confined cuts. It is sold as a single-end tool, one piece per package.

Key Features

• Solid micrograin carbide construction for rigidity and wear resistance in hard materials
• AlTiN PVD coating rated for stainless steel, high-temp alloys, and hardened workpieces
• Variable helix at 40 degrees reduces harmonic vibration and improves surface finish
• Center-cutting design supports plunge milling without a pre-drilled entry point
• Right-hand cut and right-hand spiral flutes for use on standard CNC spindles
• Capable of both roughing and finishing passes in a single setup

Compatibility

Designed as a direct-fit replacement or new-installation tool for CNC machining centers accepting a 3/8 inches straight-cylindrical shank. Manufacturer catalog number STB440.2-0.375-D2-B.0-Z4 identifies this tool within the SECO STB440.2 series.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Ensure the spindle and tool changer are fully stopped and the machine is in a safe, locked-out state before loading or removing the tool. Seat the shank fully into a clean, properly sized collet or end mill holder and torque the retention mechanism to the tool holder manufacturer specification. Verify runout does not exceed the stated TIR maximum of 0.0005 inches before beginning a cut.