Guhring 9055140099000 Carbide Drill Bit 0.3898 in

Product Description

The GUHRING 9055140099000 is a solid carbide screw machine length drill bit designed for high-performance drilling in demanding industrial and trade applications. Built to DIN 6537K specification, it features a 140-degree split point (SU type) with web thinning for reduced thrust and cleaner entry. The FIREX coating provides heat and wear resistance for extended tool life in abrasive and hard materials. At 0.3898 inches in diameter with a straight-cylindrical shank, this bit is suited for machinists, tool-and-die tradespeople, and precision drilling operations where dimensional accuracy and finish quality are critical.

This drill bit is engineered for use across a wide range of workpiece materials including brass, cast iron, hardened materials, nickel alloy, stainless steel, carbon steel, and titanium alloy. Its 3xD flute-to-diameter ratio and regular spiral flute geometry make it appropriate for short-hole drilling in screw machine, CNC, and production drilling setups where tool rigidity and chip evacuation are priorities. Coolant-through capability is not supported on this model.

Key Features

• Solid carbide construction with submicron-grade material for hardness and wear resistance
• FIREX coating for elevated heat resistance and longer tool life in tough alloys
• 140-degree SU split point with web thinning for low thrust and accurate entry
• Straight-cylindrical shank compatible with standard drill chucks and collet systems
• Regular spiral flute geometry supports efficient chip evacuation in short-hole applications
• DIN 6537K specification ensures dimensional conformance for precision work

Compatibility

Designed for use in screw machine, CNC, and production drilling operations targeting workpiece materials including brass, cast iron, hardened materials, nickel alloy, stainless steel, steel, and titanium alloy. Fits within the 0.3500 to 0.4000 inch drill bit size range of the GUHRING Series 5514 product family.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or tool operators familiar with carbide tooling requirements. Secure the straight-cylindrical shank firmly in an appropriate chuck or collet before operation to prevent runout. Carbide tooling is brittle — avoid side loads, interrupted cuts without proper setup, and dropping or impact that can cause micro-fractures. Follow machine manufacturer feed and speed guidelines for the specific workpiece material being drilled.