Guhring 9011830055000 Carbide Jobber Drill Bit 5.5mm

Product Description

The GUHRING 9011830055000 is a solid carbide jobber-length drill bit designed for precision drilling in ferrous metals and cast iron. Built to DIN 6537L and DIN 6535 standards, this bit features a 5.5 mm diameter, a 140-degree split-point (SU) geometry, and a titanium nitride (TiN) coating for extended wear resistance. The web-thinned, tapered web design reduces thrust force at entry. Coolant-through capability makes it suitable for deeper holes in production environments. The whistle notch shank provides positive rotational engagement in compatible holders. A licensed machinist or tool-and-die technician is the typical installer for this type of tooling.

This drill bit is intended for use in machining cast iron and steel workpieces where tight tolerances and clean entry are required. The 5xD flute-to-diameter ratio and 44 mm flute length support controlled chip evacuation in jobber-depth applications. The self-centering point geometry reduces the need for a center punch or spot drill on prepared surfaces. It is well suited for CNC machining centers and manual drill presses where a whistle notch or set-screw chuck retention is used. The 82 mm overall length fits standard jobber-length toolholders.

Key Features

• Solid carbide submicron-grade construction for rigidity and heat resistance in hard materials
• Titanium nitride (TiN) coating reduces friction and extends cutting tool life
• 140-degree SU split-point geometry for self-centering entry without pre-spotting
• Coolant-through design supports chip flushing in deeper or higher-feed applications
• Whistle notch shank provides positive drive engagement and resists pullout
• Web-thinned tapered web lowers thrust requirements at the drill tip
• Conforms to DIN 6537L and DIN 6535 dimensional standards

Compatibility

Designed as an OEM-specification replacement or direct-use drill bit for applications requiring a 5.5 mm diameter jobber-length carbide drill in the DIN 6537L form factor. Primary workpiece materials are cast iron (Material Code K) and steel (Material Code P).

Installation Notes

Installation and use should be performed by a qualified machinist familiar with carbide tooling. Secure the whistle notch shank firmly in a compatible holder before use — carbide is brittle and will fracture if run with excessive runout or lateral load. Confirm spindle speed and feed rate are appropriate for the workpiece material and drill diameter before engaging the cut. Do not use carbide drill bits in hand-held drills or flexible-shaft tools.