Guhring 9005570063500 Spotting Drill 90 Deg 1/4 in Hss

Product Description

The GUHRING 9005570063500 is a 90-degree high speed steel spotting drill designed to accurately locate and start holes before finish drilling. Part of the Guhring Series 557, this single-ended tool features a 1/4 inch (0.2500 inch) cutting diameter, a 70mm (2.756 inch) overall length, and a bright uncoated finish suited for general-purpose metalworking applications. The spiral flute geometry and right-hand cutting direction help center the drill point precisely, reducing walkout and improving hole-to-hole positional accuracy. Machinists and tool crib professionals working in job shops, production environments, and maintenance facilities will find this drill a reliable choice for pre-spotting operations on steel, aluminum, and similar workpiece materials.

This spotting drill is intended for use in CNC machining centers, drill presses, and manual mills where accurate hole location is required before a twist drill or boring operation follows. Its straight-cylindrical shank is compatible with standard drill chucks and collet systems that accept 1/4 inch shank tooling. The 17mm (0.669 inch) flute length and two-flute spiral design support efficient chip clearance during short-depth spotting passes. The general-purpose tool performance rating makes it appropriate across a broad range of common shop materials.

Key Features

• 90-degree drill point angle for accurate hole spotting and center location
• High speed steel construction suitable for general-purpose machining
• Bright uncoated finish — ready to use without additional surface treatment concerns
• Two spiral flutes with right-hand cutting direction for standard spindle setups
• Straight-cylindrical shank fits standard chucks and collet holders accepting 1/4 inch tooling
• Series 557 designation for straightforward reorder and tooling system integration

Compatibility

Designed as an OEM-style spotting drill for use in any machine tool equipped with a drill chuck or collet system accepting a 6.35mm (1/4 inch) straight-cylindrical shank.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. Secure the shank fully in the chuck or collet holder to the recommended engagement depth before tightening. Power down and lock out the spindle drive before changing tooling. Use appropriate cutting fluid or coolant for the workpiece material and confirm spindle speed and feed rate are set for high speed steel tooling before engaging the cut.