Guhring 9006190071400 Extra Length Cobalt Drill Bit Letter K

Product Description

The GUHRING 9006190071400 is a Letter K extra length cobalt drill bit designed for deep hole drilling in demanding production environments. Built to DIN 1869 standards, it features a 130-degree GT 100 point with web thinning for improved centering and reduced thrust at entry. The parabolic flute geometry promotes efficient chip evacuation across a 200 mm flute length, making it well-suited for extended-reach applications where standard-length drills cannot reach. The straight-cylindrical shank with an h8 diameter tolerance provides consistent tool holding in both collets and drill chucks. Licensed machinists and toolroom technicians are the primary users of this bit.

This drill bit is rated for deep hole drilling at a flute-by-diameter ratio of 10xD, with a maximum drilling depth of 189.29 mm. It is intended for use in aluminum, titanium alloys, and general-purpose steel as a secondary workpiece material. The right-hand cutting direction and regular spiral type make it compatible with conventional CNC machining centers, knee mills, and drill presses. Its 290 mm overall length suits fixtures and workpieces that require extended tool reach beyond standard jobber or stub configurations.

Key Features

• DIN 1869 extra length standard with 290 mm overall length and 200 mm flute length
• 130-degree GT 100 drill point with web thinning for improved entry and reduced thrust
• Parabolic flute geometry for efficient chip evacuation in deep hole applications
• Cobalt tool material with nitride finish for elevated heat and wear resistance
• Straight-cylindrical shank with h8 tolerance for precise tool-holder fit
• Right-hand cut, 2-flute configuration for clean material removal in aluminum and titanium alloys

Compatibility

Designed as a DIN 1869 Series 619 extra length drill bit suitable for deep hole drilling in aluminum, titanium alloy, and steel workpieces on CNC machining centers, knee mills, and drill presses equipped with straight-shank tool holders.

Installation Notes

Installation and operation should be performed by a qualified machinist or toolroom technician. Secure the straight-cylindrical shank firmly in an appropriate collet or drill chuck rated for the shank diameter before beginning any operation. Ensure the machine spindle is fully stopped and power is isolated before installing or removing the drill bit. Do not exceed the maximum drilling depth of 189.29 mm, and use appropriate cutting fluid or coolant for the workpiece material to preserve tool life.