Guhring 9003290006000 Cobalt Stub Drill 0.60mm

Product Description

The GUHRING 9003290006000 is a cobalt (M35) stub-length screw machine drill bit designed for precision drilling in tough materials. Built to DIN 1897 standards, it features a 0.60 mm diameter, a 130-degree split point, and a web-thinned tapered web for reduced thrust and cleaner entry. The straight-cylindrical shank measures 0.60 mm in diameter and 17.50 mm in length, with an overall length of 21.00 mm (0.8268 inches). The bright, uncoated finish is well suited for applications where coating buildup or heat retention is a concern. Licensed machinists, tool and die makers, and precision CNC operators are the primary installers of this bit.

This drill bit is engineered for use in titanium alloy and similarly demanding workpiece materials where cobalt M35 grade tooling is required. The stub-length design provides added rigidity in short-reach drilling applications, making it appropriate for screw machine operations, precision CNC work, and tight-clearance setups where a standard-length bit would flex or deflect. The 3xD flute-to-diameter ratio keeps the flute length at 3.50 mm, limiting chip packing in short-depth holes.

Key Features

• Cobalt M35 tool material for heat resistance and durability in titanium alloy and hard metals
• 130-degree point angle with web thinning for reduced entry thrust and accurate positioning
• Stub-length (DIN 1897) design adds rigidity and minimizes deflection in short-reach applications
• Straight-cylindrical shank fits standard drill chucks and collet holders without adaptation
• Bright/uncoated finish maintains dimensional accuracy and avoids coating interference in sensitive applications
• Right-hand, regular-spiral, 2-flute configuration for efficient chip evacuation in through and blind holes

Compatibility

Designed as an OEM-style precision drill bit conforming to DIN 1897 stub-length standards, suitable for use in standard drill chucks, ER collets, and screw machine spindles accepting a 0.60 mm straight-cylindrical shank. Primary workpiece material rating is titanium alloy.

Installation Notes

Installation and operation of this drill bit should be performed by a qualified machinist or CNC technician. Ensure the spindle and work-holding are fully stopped and locked out before changing tooling. Verify chuck or collet concentricity before seating the shank to prevent runout-induced breakage at this diameter. At 0.60 mm, the bit is extremely fragile — do not exceed recommended feed rates or apply side-loading forces during operation.