Micro 100 DM-250-290X Drill Mill 1/4 in 2 Flute Solid Carbide

Product Description

The MICRO 100 DM-250-290X is a solid carbide drill mill designed for combined drilling and milling operations in a single tool. With a 1/4 inch cutting diameter and a 90-degree point angle, it transitions cleanly between plunge cutting and side milling without a tool change. The AlTiN coating improves heat resistance and extends tool life in ferrous and abrasive materials. The 2-flute geometry provides efficient chip evacuation in both drilling and peripheral milling cuts. This tool is installed and run by machinists and toolroom technicians on CNC machining centers and manual mills.

The DM-250-290X suits applications where a single tool must drill, chamfer, and end mill in close-tolerance work. Common scenarios include spotting, through-hole drilling, light contouring, and chamfering on steel, stainless, cast iron, and hardened materials where the AlTiN finish provides thermal protection. The 3/4 inch length of cut accommodates moderate-depth pockets and through-holes in typical workpiece thicknesses encountered in production and job-shop environments.

Key Features

• Solid carbide construction for rigidity and dimensional stability under cutting loads
• AlTiN coating for elevated heat resistance and extended tool life in ferrous and abrasive materials
• 90-degree point angle enables drilling, chamfering, and spotting in a single operation
• 2-flute design promotes chip clearance in both axial and radial cutting directions
• Matched shank and cutting diameter at 1/4 inch simplifies collet selection and setup

Compatibility

Designed for use in standard 1/4 inch collets and chucks on CNC machining centers, knee mills, and drill-mill machines. No specific OEM machine compatibility was stated in the product data.

Installation Notes

Installation is performed by a machinist or toolroom technician. Secure the 1/4 inch shank in a properly sized collet or end mill holder and verify runout before cutting. Always power down and lock out the spindle before changing tooling. Follow shop-standard feeds and speeds for solid carbide drill mills in the target material; do not exceed the rated length of cut when side milling to avoid deflection.