Guhring 9055110121000 Carbide Drill Bit 12.1mm

Product Description

The GUHRING 9055110121000 is a solid carbide jobber length drill bit engineered for high-performance drilling in demanding industrial and machining applications. Built to DIN 6537L standards, this Series 5511 bit features a 140-degree split point (SU point type) with web thinning for self-centering entry and reduced thrust. The FIREX coating provides thermal and wear resistance suited for dry or minimum-quantity lubrication cutting. At 12.1 mm in diameter with a straight-cylindrical shank of 14 mm diameter, it is designed for use in CNC machining centers and rigid drill presses where consistent, repeatable hole quality is required.

This drill bit is intended for machining cast iron and steel workpieces, corresponding to material codes K and P. The 5xD flute-to-diameter ratio and 77 mm flute length support chip evacuation in medium-depth holes up to 70 mm. Coolant-through capability makes it well-suited for production environments where internal coolant supply is available. The regular spiral flute geometry and tapered web configuration are optimized for ferrous metals in both job shop and production floor settings.

Key Features

• Solid carbide submicron-grade construction for rigidity and edge retention
• FIREX coating for thermal resistance and extended tool life in ferrous materials
• 140-degree SU point with web thinning for self-centering and reduced drill walk
• Coolant-through design supports internal coolant delivery for deep-hole applications
• Straight-cylindrical shank at 14 mm diameter for secure chuck or collet holding
• Conforms to DIN 6535 and DIN 6537L standards for consistent dimensional accuracy

Compatibility

Designed for drilling cast iron and steel workpieces (material codes K and P per DIN classification). Fits CNC machining centers and drill presses equipped with collet chucks or tool holders accepting a 14 mm straight-cylindrical shank.

Installation Notes

Installation and use should be performed by a qualified machinist or tooling technician. Ensure the spindle and workpiece are fully secured before operation, and confirm the machine tool holder is rated for the shank diameter. When using the coolant-through feature, verify internal coolant pressure and flow are within the machine tool specifications before cycling. Inspect the cutting edge and coating for wear or chipping before each use and replace the bit if edge condition is compromised.