Sgs 51123 Solid Carbide Jobber Drill Bit 23/64 Inch

Product Description

The SGS 51123 is a solid carbide jobber-length drill bit designed for precision drilling in metalworking and machining applications. Built to DIN 338 standards, it features a 23/64 inch (0.3594 inch) diameter, a 118-degree facet point, and a web-thinned, tapered web construction that reduces thrust and improves chip evacuation at entry. The micrograin carbide substrate delivers edge retention and rigidity beyond what high-speed steel can provide in the same diameter range. A bright, uncoated finish means the bit is ready to run as delivered. This is a two-flute, right-hand cutting tool intended for production and maintenance machinists who need repeatable hole quality in harder materials.

The SGS 51123 is suited for drilling steel, cast iron, aluminum, and non-ferrous metals in vertical mills, drill presses, and CNC machining centers. With a 2-3/4 inch flute length and a 4-1/4 inch overall length, it fits standard tool holders and drill chucks sized for a 0.3594 inch straight cylindrical shank. The 5xD flute-to-diameter ratio and maximum drilling depth of 2.2 inches make it appropriate for through-hole and blind-hole operations in typical workpiece thicknesses encountered in job-shop and production environments.

Key Features

• Solid micrograin carbide construction for superior hardness and edge retention compared to HSS alternatives
• 118-degree facet point with web thinning reduces entry thrust and centers the bit accurately on the workpiece
• Regular spiral flute geometry promotes consistent chip evacuation in steel, cast iron, and non-ferrous materials
• Bright uncoated finish — no coating buildup to affect diameter tolerance; diameter tolerance held to -0.0005 to 0.0000 inch
• Straight cylindrical shank fits standard drill chucks and collet holders without modification
• Conforms to DIN 338 standard for jobber-length drills

Compatibility

Designed for use in standard drill chucks and collet systems accepting a 0.3594 inch straight shank. Intended primary workpiece materials are steel, cast iron, aluminum, and non-ferrous metals as specified by the manufacturer for Series 101 general-purpose solid carbide jobber drills.

Installation Notes

Installation and use should be performed by qualified machinists or tooling technicians familiar with rotating cutting tools. Ensure the spindle and workpiece are fully secured before engaging the drill. Verify chuck or collet runout is within acceptable limits before use, as excess runout accelerates carbide wear and increases breakage risk. Carbide drills are brittle compared to HSS — avoid side loading and interrupted cuts without confirming the grade is rated for that application.