Guhring 9024640086100 Drill Bit Letter R Solid Carbide

Product Description

The GUHRING 9024640086100 is a jobber length drill bit sized to letter R (0.3390 inches) and manufactured from solid carbide with a FIREX coating. It is designed for general-purpose drilling in aluminum and other non-ferrous materials, making it a reliable choice for machine shops and manufacturing environments where consistent hole quality is required. The bit features a 118-degree faceted point angle, a web-thinned tip for reduced thrust at entry, and a regular spiral flute with right-hand cut geometry. With an overall length of 4.92 inches and a flute length of 3.19 inches, it fits standard toolholders used by machinists and CNC operators.

This drill bit is suited for production drilling applications in light metals, particularly aluminum, where the FIREX coating helps resist heat buildup and extend tool life. The straight-cylindrical shank measures 8.61 mm in diameter with a shank length of 44 mm, making it compatible with standard collet chucks and drill presses. The Series 2464 designation places it within a recognized DIN-specification line engineered for precise tolerances and repeatable performance in both manual and automated setups. It is sold individually and used by machinists, tool-and-die technicians, and CNC operators in industrial and job shop environments.

Key Features

• Letter R size (0.3390 inches) solid carbide construction for rigidity and wear resistance
• FIREX coating reduces friction and heat in aluminum and non-ferrous drilling
• 118-degree faceted point with web thinning for clean entry and reduced thrust
• Right-hand cut, regular spiral flute for efficient chip evacuation
• Straight-cylindrical shank compatible with standard collet and drill chuck toolholders
• DIN specification, Series 2464, Material Grade K40 carbide

Compatibility

Designed as an OEM-specification jobber length drill bit for use in standard collet chucks, keyless drill chucks, and CNC toolholding systems that accept an 8.61 mm straight-cylindrical shank. Primary workpiece material designation is N (aluminum and non-ferrous alloys).

Installation Notes

Installation and operation should be performed by a qualified machinist or CNC technician. Ensure the machine spindle is fully stopped and the tool is secured to the correct torque specification for the toolholder type before beginning any drilling operation. Confirm shank diameter compatibility with the collet or chuck before mounting. Always operate within the recommended speed and feed parameters for solid carbide tooling in the target workpiece material to avoid premature tool fracture.