Guhring 9005520036600 Screw Machine Drill Bit Size 27

Product Description

The GUHRING 9005520036600 is a stub-length (screw machine length) high-speed steel drill bit engineered for high-performance drilling in steel, aluminum, and non-ferrous materials. It carries a wire gauge size of 27, equivalent to 0.1440 inches in decimal, and features a 130-degree point angle with a cone relief tip for fast, accurate entry. The parabolic flute geometry with web thinning promotes efficient chip evacuation and reduces thrust load. At 2-1/16 inches overall length with a 25/32-inch flute, this bit is suited for work in confined spaces or short-travel drilling setups on screw machines and drill presses.

This bit is designed for use in production and job-shop environments where tight-tolerance holes are drilled in steel and non-ferrous stock. The stub length makes it a practical choice for CNC machining centers, turret lathes, and screw machines where rigidity and minimal overhang improve hole quality. It is appropriate for both high-volume production runs and maintenance drilling applications. Licensed machinists and tool-and-die technicians are the primary users. The straight cylindrical shank accepts standard drill chucks without adapters.

Key Features

• Wire size 27 (0.1440 inches) with a diameter tolerance of +0.000 to -0.018 mm for precise fit
• 130-degree cone relief point angle reduces walking and improves penetration on hard materials
• Parabolic flute with web thinning and parallel web configuration for aggressive chip clearing
• Stub length (2-1/16 inches OAL) provides enhanced rigidity over jobber-length equivalents
• Right-hand cutting direction; bright/uncoated finish compatible with a wide range of cutting fluids
• Conforms to DIN 1897 specification for dimensional consistency

Compatibility

Designed as a DIN 1897 stub-length drill bit for use in standard straight-shank drill chucks; primary workpiece materials are steel, aluminum, and non-ferrous alloys.

Installation Notes

Installation is performed by machinists or toolroom technicians using a standard drill chuck sized for the 0.1441-inch straight shank. Confirm chuck runout is within tolerance before seating the bit to avoid oversized holes. Power down and de-energize the spindle completely before changing tooling. Do not exceed the maximum drilling depth of 0.5710 inches without retracting to clear chips, as the stub flute length limits evacuation capacity beyond that depth.