Guhring 9011830072000 Carbide Drill Bit 7.2 Mm Tin

Product Description

The GUHRING 9011830072000 is a solid carbide jobber-length drill bit designed for precision drilling in ferrous materials. Built to DIN 6537L standards, it features a 140-degree split point (SU geometry) with web thinning for self-centering entry without a center punch. The titanium nitride (TiN) coating extends tool life by reducing friction and heat buildup at the cutting edge. At 91 mm overall length with a 53 mm flute length, this bit handles depths up to 42.2 mm. Coolant-through capability supports high-feed applications where chip evacuation and thermal management are critical. Licensed HVAC technicians, machinists, and trade professionals working in steel and cast iron fabrication or service applications will find this bit suited to production and maintenance drilling alike.

This drill bit is intended for use in cast iron and steel workpieces, covering primary material codes K and P. The 5xD flute-to-diameter ratio makes it appropriate for moderate-depth holes in a jobber-length format. It fits standard CNC machining centers, drill presses, and handheld power tools with chucks accommodating a 0.315-inch shank. The whistle notch shank provides positive drive retention in compatible toolholders. Series 1183 positions this bit in a submicron carbide grade optimized for consistent performance across repeatable production cycles.

Key Features

• Solid submicron carbide construction for high rigidity and wear resistance in ferrous materials
• 140-degree SU split point with web thinning enables self-centering entry on flat and curved surfaces
• Titanium nitride (TiN) coating reduces friction and extends cutting edge life
• Coolant-through design supports chip evacuation and heat control in deep-hole and high-feed operations
• Whistle notch shank provides secure, positive drive in compatible toolholders
• Conforms to DIN 6535 and DIN 6537 L standards for dimensional consistency and interchangeability

Compatibility

Designed for use in cast iron and steel workpieces (material codes K and P). Fits toolholders and chucks accepting a 0.315-inch (0.3150 inch) whistle notch shank. Conforms to DIN 6535 and DIN 6537 L standards. Drill bit diameter falls within the 7.00 mm to 8.00 mm size range (0.2500 to 0.3000 decimal inch).

Installation Notes

Installation and operation should be performed by qualified machinists or trade professionals familiar with rotating cutting tool safety. Ensure the machine spindle is fully stopped and de-energized before loading or removing the bit from the toolholder. Verify that the whistle notch is properly engaged and that the shank is fully seated to the specified shank length before beginning any drilling operation. Follow applicable shop safety standards and machine manufacturer guidelines for feed rate, spindle speed, and coolant pressure when using coolant-through tooling.