Walter-titex 7377432 Solid Carbide Jobber Drill Bit 4 Mm

Product Description

The WALTER-TITEX 7377432 is a solid carbide jobber length drill bit engineered for demanding precision drilling applications. Measuring 4 mm in diameter with a 140-degree drill point angle, this bit features a dual-layer TiSiAlCrN and AlTiN coating that extends tool life and reduces heat buildup at high cutting speeds. The two-flute spiral geometry and coolant-through design support efficient chip evacuation and thermal management in deep or interrupted cuts. It is intended for use by machinists and tool-and-die professionals working with CNC machining centers or precision drilling equipment.

This drill bit is rated for use in cast iron, non-ferrous metals, steel, superalloys, and titanium workpieces. The Series DC160 design addresses a range of demanding drilling scenarios, including blind holes, cross holes, inclined hole exits, and stack drilling. The 5xD flute-to-diameter ratio and a maximum drilling depth of 29 mm make it well suited for production environments where consistent hole quality and cycle time matter. The straight-cylindrical shank accommodates standard precision chucks and collet holders.

Key Features

• Solid carbide construction in material grade WJ30ET for rigidity and wear resistance in hard materials
• Dual-coating system (TiSiAlCrN and AlTiN) improves heat and oxidation resistance at elevated cutting speeds
• Coolant-through capability supports chip flushing and temperature control in deep-hole drilling
• 140-degree split point angle reduces thrust force and improves self-centering on entry
• Rated for blind holes, cross holes, inclined hole exits, and stack drilling applications
• Compliant with ANSI and ISO standards; diameter tolerance held to m7

Compatibility

Designed for use in cast iron (K), non-ferrous metal (N), steel (P), and superalloys and titanium (S) workpieces. Compatible with standard straight-cylindrical collet chucks and precision drill chucks accepting a 6 mm shank diameter. Part of the WALTER-TITEX Series DC160 drill family covering the 4.00 mm to 5.00 mm diameter range.

Installation Notes

Installation and operation of solid carbide drill bits should be performed by a qualified machinist familiar with CNC or manual drilling equipment. Ensure the machine spindle and chuck are clean and free of runout before seating the shank; even minor runout can cause carbide fracture at small diameters. Always confirm coolant flow is active before engaging the cut when using the through-coolant feature. Solid carbide is brittle compared to high-speed steel — avoid side loads, interrupted re-entry without retracting, and exceeding the 29 mm maximum drilling depth.