Guhring 9055110082000 Carbide Jobber Drill Bit Letter P

Product Description

The GUHRING 9055110082000 is a solid carbide jobber length drill bit sized at Letter P (8.20 mm / 0.3228 inches) with a 140-degree split-point (SU) tip geometry. It carries a FIREX coating for extended wear resistance and runs a right-hand spiral flute in a regular spiral configuration. The overall length is 4.055 inches (103 mm) with a flute length of 2.402 inches (61 mm) and a maximum drilling depth of 1.917 inches (48.70 mm). The straight-cylindrical shank measures 0.3937 inches in diameter. Built to DIN 6537L and DIN 6535 standards from submicron-grade carbide, this bit is suited for production drilling in cast iron and steel by machining professionals.

This drill bit is engineered for high-performance drilling in cast iron and steel workpieces, making it appropriate for production machining, tool and die, and precision fabrication environments. The self-centering SU point reduces the need for center-punching and improves positional accuracy in CNC and manual drilling operations. Coolant-through capability supports high feed rates and extended tool life in deep-hole and interrupted-cut applications. The 5xD flute-to-diameter ratio and web-thinned, tapered web construction help with chip evacuation in tighter tolerance bores.

Key Features

• Solid submicron-grade carbide construction for high rigidity and wear resistance
• FIREX coating reduces heat buildup and extends service life in ferrous materials
• 140-degree SU self-centering point improves hole location accuracy without a center punch
• Coolant-through design supports high feed rates and assists chip removal in deep holes
• Web-thinned tapered web reduces thrust force and improves cutting efficiency
• Conforms to DIN 6537L and DIN 6535 standards for dimensional consistency

Compatibility

Designed for drilling cast iron and steel workpieces; primary workpiece material codes K and P per the input specifications. Compatible with CNC machining centers and manual drill presses accepting a 0.3937-inch straight-cylindrical shank. Series 5511 tooling.

Installation Notes

Installation and use should be performed by qualified machinists or tooling professionals familiar with carbide tooling handling. Ensure the machine spindle and collet or chuck are clean and properly torqued before seating the shank. Carbide is brittle — avoid side loading, interrupted cuts without appropriate feeds, or dropping the tool on hard surfaces. When activating coolant-through function, verify the spindle coolant supply pressure and flow rate are within the machine specification before running.