Widia 4142849 Drill Bit 1/8 Inch Tialn 2 Flute

Product Description

The WIDIA 4142849 is a screw machine length drill bit designed for high-performance drilling in demanding metalworking applications. Built to the VDS402A series standard, this 1/8 inch (0.1250 inches) diameter bit features a TiAlN coating that resists heat and wear during aggressive cutting cycles. The two-flute helical design with a web-thinned, thinned point promotes accurate entry and reduces thrust in hard materials. With coolant-through capability and a cylindrical shank, this bit is suited for CNC machining centers and production drilling environments where precision and tool life are critical. Licensed machinists and metalworking shops are the primary installers.

This drill bit is engineered for use on steel, stainless steel, cast iron, non-ferrous metals, and superalloys including titanium. The 5xD flute-to-diameter ratio and 0.9055-inch maximum drilling depth make it well suited for short, precise holes in production runs on vertical machining centers, drill presses, and multi-axis CNC equipment. It performs as a general-purpose drill across a wide range of workpiece materials, reducing the need for multiple specialized bits in a mixed-material shop environment.

Key Features

• TiAlN coating resists heat and oxidation for extended tool life in ferrous and exotic alloys
• Web-thinned thinned point reduces entry thrust and improves hole accuracy
• Coolant-through design channels cutting fluid directly to the cutting edge
• Two helical flutes provide efficient chip evacuation in deep-hole drilling
• Cylindrical shank compatible with standard collets and drill chucks
• Diameter tolerance of -0.0005/0.0000 inches ensures close-tolerance hole sizing

Compatibility

Designed as an OEM-style replacement or direct-use drill bit for production metalworking operations involving steel, stainless steel, cast iron, non-ferrous metals, and superalloys and titanium, as specified by the manufacturer.

Installation Notes

Installation and operation should be performed by qualified machinists or tooling technicians familiar with CNC or manual drilling equipment. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Secure the cylindrical shank firmly in a properly sized collet or chuck to prevent runout. When using coolant-through capability, verify that the machine tool's coolant system is compatible and that coolant pressure is set per the equipment manufacturer's guidelines before starting the cut.