Seco 03204974 Ball End Mill 0.0197 in 2 Flute Carbide Hxt

Product Description

The SECO 03204974 is a solid carbide ball end mill designed for high-precision milling in hard and difficult-to-machine materials. With a 0.0197 inch (0.50 mm) mill diameter and a 2-flute, right-hand helical geometry at a 28-degree helix angle, this tool is built for both roughing and finishing passes at micro-scale. The HXT PVD coating extends tool life in demanding cutting environments. The extended-reach design, with a 3.50 mm reach length and 0.46 mm neck diameter, provides clearance in deep-cavity and fine-detail applications. Micrograin carbide substrate supports rigidity and edge retention at small diameters. Installed by machinists and toolroom technicians working in CNC milling operations.

The 03204974 is suited for precision milling of hard materials, including tool steels, hardened alloys, and similar workpiece materials classified under material code H. The single-end configuration and straight-cylindrical 6.00 mm shank allow direct mounting in standard collet chucks or shrink-fit holders. The 50.00 mm overall length with extended-reach geometry makes this tool effective in tight-pocket, contour, and die-and-mold machining scenarios where a standard-reach tool cannot reach the work surface. Series JMB112 is the SECO product family for this style of micro ball end mill.

Key Features

• 0.50 mm (0.0197 inch) ball end diameter with 0.25 mm nose radius for fine-detail contour work
• HXT PVD coating for extended tool life in hard and abrasive workpiece materials
• Extended-reach neck geometry: 3.00 mm neck length, 0.46 mm neck diameter, 3.50 mm reach length
• Micrograin solid carbide substrate for rigidity and edge integrity at micro diameters
• 28-degree medium helix angle optimized for chip evacuation during roughing and finishing
• Right-hand cut and right-hand flute direction; no coolant-through, no chipbreaker

Compatibility

Designed as an OEM-style replacement or direct-fit cutting tool for CNC machining centers and milling machines accepting a 6.00 mm straight-cylindrical shank. Part of the SECO JMB112 series; catalog reference JMB112005G3BZ2.0-HXT.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians on CNC milling equipment. Ensure the machine spindle and tool holder are clean and free of debris before seating the 6.00 mm shank. Verify collet or shrink-fit holder runout is within acceptable limits, as micro-diameter tools are sensitive to spindle runout. Follow the machine manufacturer and tooling guidelines for feed rates and speeds appropriate to the workpiece material and coating type.