Guhring 9038990015700 Micro Drill Bit 1.57 Mm Carbide

Product Description

The GUHRING 9038990015700 is a solid carbide micro drill bit designed for precision drilling in demanding metalworking applications. Built from K40-grade carbide and coated with TiAlN for heat and wear resistance, it features a 140-degree faceted point and a web-thinned geometry that reduces thrust and improves centering at entry. The drill measures 1.57 mm in diameter with a 3.00 mm straight-cylindrical shank and a 38.00 mm overall length. It is rated to a maximum drilling depth of 7.65 mm and carries an h7 diameter tolerance for close-fit bore applications. Licensed machinists, tool-and-die makers, and precision fabricators are the primary users.

This drill bit is engineered for use in cast iron and steel workpieces, covering material codes K and P. The 5xD flute-by-diameter ratio supports controlled chip evacuation in shallow-to-moderate depth holes. Its spiral flute with regular spiral type suits CNC machining centers and high-speed drill presses where consistent hole quality and tool life are required. The right-hand cutting direction is standard for conventional spindle rotation. Typical applications include pilot holes, through-holes, and precision bore preparation in production and job-shop environments.

Key Features

• K40-grade solid carbide construction for hardness and thermal stability
• TiAlN coating extends tool life in ferrous and abrasive materials
• 140-degree faceted point with web thinning reduces entry thrust and improves hole position accuracy
• h7 diameter tolerance supports close-fit and precision bore applications
• 3.00 mm straight-cylindrical shank compatible with standard collet chucks and drill chucks
• Maximum drilling depth of 7.65 mm with 5xD flute ratio for effective chip clearance

Compatibility

Designed as an OEM-style precision drill bit in GUHRING Series 3899, suited for CNC machining centers and drill presses configured for 3.00 mm straight-cylindrical shank tooling when working in cast iron and steel.

Installation Notes

Installation and use should be performed by qualified machinists or tooling technicians familiar with precision drilling operations. Secure the shank fully in a collet chuck or drill chuck rated for the spindle speed and feed rate required by the workpiece material. Power down and lock out the machine spindle before changing tooling. Do not exceed the rated maximum drilling depth of 7.65 mm in a single pass without appropriate peck-drilling cycles to clear chips.