Guhring 9005520048500 Screw Machine Drill Bit Size 11

Product Description

The GUHRING 9005520048500 is a stub-length (screw machine length) twist drill bit designed for high-performance drilling in production and machining environments. Built from high-speed steel (HSS) with a bright/uncoated finish, this bit features a parabolic flute geometry and a 130-degree split-point angle with cone relief for fast chip evacuation and reduced thrust during entry. The overall length is 2-7/16 inches, the cutting diameter is 0.191 inches (wire size 11), and the flute length is 1-1/32 inches. The straight cylindrical shank measures 0.1909 inches in diameter. Web-thinned construction reduces walking and improves hole entry accuracy without a center punch on many materials.

This drill bit is suited for drilling steel, aluminum, and non-ferrous materials in screw machine, CNC lathe, and bench drill press applications. The short stub-length body improves rigidity in high-feed or high-cycle production settings where standard jobber-length bits deflect or chatter. Maximum drilling depth is 0.737 inches, making it appropriate for through-holes and shallow blind holes in plate, bar stock, and machined components. Licensed machinists, tool-and-die technicians, and CNC operators are the primary users.

Key Features

• Wire size 11 cutting diameter: 0.191 inches per DIN 1897 specification
• 130-degree cone-relief point with web thinning for reduced thrust and accurate entry
• Parabolic fast-spiral flute design for efficient chip removal in steel and non-ferrous materials
• Stub (screw machine) length body improves rigidity and reduces deflection in high-cycle drilling
• Bright/uncoated HSS construction compatible with cutting fluids and standard regrinding
• Straight cylindrical shank fits standard drill chucks and collet holders without modification

Compatibility

Designed as an OEM-style replacement or direct production substitute for stub-length HSS drill bits conforming to DIN 1897, suitable for use in screw machines, CNC lathes, and bench drill presses equipped with standard straight-shank chuck systems.

Installation Notes

Secure the shank fully in the chuck or collet before initiating rotation. Use appropriate cutting fluid or coolant for the workpiece material to extend tool life, especially in steel applications. Inspect the cutting edges and web area for wear or chipping before each use cycle. Disposal and regrinding should follow shop safety protocols for HSS tooling.