Guhring 9005570040000 Spotting Drill 90 Deg 4mm Hss

Product Description

The GUHRING 9005570040000 is a 90-degree spotting drill designed for precise center-starting of hole locations in metal and general-purpose machining applications. Built from high speed steel with a bright uncoated finish, this single-ended drill features a 4mm cutting diameter, 55mm overall length, and a 12mm spiral flute length. It is used to create accurate spot marks that guide subsequent twist drills, reducing walking and improving hole-location accuracy. The straight cylindrical shank seats cleanly in standard drill chucks and collet holders. This tool is suited for manual machining operations, CNC drilling setups, and production environments where consistent entry-point geometry is required.

This spotting drill fits general-purpose metal cutting scenarios in job shop, production, and maintenance repair environments. It is well suited for machinists and toolroom technicians working with steel, aluminum, and similar workpiece materials. The 90-degree point angle is a common standard that matches many countersink and spot-drill call-outs on engineering drawings. The right-hand cutting direction and two-flute spiral geometry support smooth chip evacuation during spotting operations.

Key Features

• 90-degree drill point angle for standard spot and center-drill geometry
• High speed steel construction for general-purpose metal cutting durability
• Bright uncoated finish suitable for use with cutting fluids or dry cutting
• Two spiral flutes with right-hand cut for efficient chip clearance
• Straight cylindrical shank compatible with standard chucks and collet systems
• Single-ended design in GUHRING Series 557

Compatibility

Designed as a general-purpose spotting drill for use in standard drill chucks and collet holders that accept a 4mm straight cylindrical shank, suitable for a wide range of manual and CNC machining setups.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Secure the straight shank firmly in a collet or drill chuck before operation and verify runout is within acceptable limits. Power down and lock out the machine spindle before changing or inspecting the tool. Observe applicable shop safety standards and manufacturer feed-and-speed recommendations for the workpiece material being drilled.