Guhring 9024640069000 Carbide Jobber Drill Bit Letter I

Product Description

The GUHRING 9024640069000 is a solid carbide jobber length drill bit designed for precision drilling in metalworking and machining applications. Built to DIN specification in Series 2464, it carries a FIREX coating and features a faceted 118-degree drill point with web thinning for improved centering and reduced thrust. The bit measures 4.29 inches overall with a 2.72-inch flute length and a 6.90 mm straight-cylindrical shank. Material grade K40 carbide provides the hardness and wear resistance needed for consistent performance in production and job-shop environments. This bit is sized to Letter I, equivalent to 0.272 inch decimal diameter.

This drill bit is rated for general-purpose use with a primary workpiece material designation of N, indicating suitability for non-ferrous metals including aluminum. The regular spiral flute geometry and right-hand cutting direction make it a standard fit for CNC machining centers, drill presses, and hand-operated drilling equipment where straight-cylindrical shank tooling is accepted. The 5xD flute-to-diameter ratio supports stable chip evacuation at moderate depths. Maximum drilling depth is 2.309 inches (58.65 mm). Coolant-through capability is not available on this model.

Key Features

• Solid carbide construction at material grade K40 for hardness and long tool life
• FIREX coating reduces friction and extends wear resistance in non-ferrous applications
• Faceted 118-degree drill point with web thinning for accurate entry and reduced walking
• Right-hand cut, regular spiral flute with 5xD ratio for reliable chip clearance
• Straight-cylindrical shank at 6.90 mm diameter for broad collet and chuck compatibility
• Built to DIN specification, Series 2464

Compatibility

Designed as an OEM-specification solid carbide jobber drill bit for use in standard straight-cylindrical shank tool holders, collet chucks, and drill presses accepting a 6.90 mm shank. Primary workpiece material designation N covers non-ferrous metals such as aluminum. No specific machine model compatibility was provided in the product data.

Installation Notes

Installation and tool changes should be performed by qualified machinists or tooling technicians with the machine powered down and locked out per facility LOTO procedures. Ensure the collet or chuck is properly torqued to the tool holder manufacturer specification before operation. Inspect the shank and cutting edges for damage before each use. Do not exceed the maximum drilling depth of 2.309 inches in a single pass without retracting to clear chips.