Walter-titex 6618796 Extra Length Drill Bit 6.9 Mm Carbide

Product Description

The WALTER-TITEX 6618796 is a solid carbide extra length drill bit engineered for demanding precision drilling in metalworking and industrial applications. Measuring 6.9 mm in diameter with a 140-degree split point, it delivers clean entry and reduced thrust force. The TiNAl coating provides thermal resistance and extended tool life under high-speed cutting conditions. With a 110 mm flute length and 148 mm overall length, this bit handles deeper bore requirements that standard-length drills cannot reach. The straight-cylindrical shank measures 8.00 mm in diameter and 36.00 mm in length, ensuring secure chuck retention. It is designed for use by machinists and tooling professionals operating CNC equipment or manual machine tools.

This drill bit is suited for production and job-shop environments where extended reach and tight tolerances are required. The DC150-12-A1 series targets blind holes, cross holes, inclined hole exits, and stack drilling operations. Primary workpiece materials include cobalt, iron, nickel, and titanium alloys. Secondary materials include glass and graphite. The 12xD flute-to-diameter ratio supports a maximum drilling depth of 98.00 mm, making it appropriate for through-coolant setups in high-volume material removal cycles.

Key Features

• Solid carbide construction for rigidity and dimensional stability in hard materials
• TiNAl coating extends tool life and supports elevated cutting temperatures
• 140-degree drill point angle reduces walking and improves chip evacuation at entry
• Coolant-through design delivers cutting fluid directly to the cutting edge for deep-hole applications
• 12xD flute-by-diameter ratio allows a maximum drilling depth of 98.00 mm
• Right-hand cutting direction with 2-flute geometry optimized for chip clearance

Compatibility

Designed for use in blind hole, cross hole, inclined hole exit, and stack drilling operations on cobalt, iron, nickel, and titanium alloy workpieces, as well as glass and graphite. Conforms to ANSI, DIN 6535 HA, and ISO standards. Shank diameter is 8.00 mm straight-cylindrical, compatible with standard collet chucks and drill holders accepting that shank size.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Secure the shank fully within the chuck or collet holder before operation and verify runout before beginning a cut. Power down and de-energize the machine spindle completely before changing or inspecting the bit. Coolant-through capability should be connected to an appropriate through-spindle coolant system when drilling at maximum depth to ensure chip evacuation and thermal control.