Guhring 9005490053100 Jobber Drill No 4 Hss 130 Deg

Product Description

The GUHRING 9005490053100 is a high speed steel jobber-length drill bit ground to a 130-degree split point with a parabolic flute profile. Sized to No. 4 wire gauge (0.2090 inch diameter), it delivers efficient chip evacuation and fast penetration in demanding production drilling applications. The bright, uncoated finish is suited for use with cutting fluids where coating adhesion is not a priority. The two-flute parabolic geometry reduces thrust force and helps clear chips without clogging, making this bit effective in deep-hole work relative to diameter. It is manufactured to DIN 338 standards and carries a heavy-duty grade designation, indicating tighter tolerances and more consistent performance than general-purpose bits.

This jobber drill is intended for drilling steel, cast iron, aluminum, and other non-ferrous materials in production or maintenance environments. The 5xD flute-to-diameter ratio supports drilling depths up to 1.931 inches in a single pass without peck cycling in most setups. Typical users include machinists, maintenance mechanics, and industrial fabricators working on drill presses, CNC machining centers, or hand-held power tools requiring a straight cylindrical shank. The Series 549 designation places this bit within a well-established DIN-compliant product family from GUHRING.

Key Features

• No. 4 wire size, 0.2090 inch diameter with a tight tolerance of -0.018 to 0.000 mm
• 130-degree standard point angle for reduced thrust and self-centering entry
• Parabolic flute geometry promotes fast chip evacuation in deep drilling
• Web-thinned, tapered web configuration reduces cutting resistance
• Bright, uncoated high speed steel construction compatible with cutting-fluid use
• Manufactured to DIN 338 standards, Series 549 heavy-duty grade

Compatibility

Designed as a DIN 338-compliant jobber drill for use in standard straight-shank drill chucks. Rated for primary workpiece materials including steel, cast iron, aluminum, and non-ferrous metals per DIN material codes K, N, and P.

Installation Notes

Secure the straight cylindrical shank fully in the drill chuck and verify concentricity before operation. Power down and de-energize the machine spindle before changing bits. Apply cutting fluid appropriate to the workpiece material to extend tool life and maintain hole tolerance. Inspect the point for wear or chipping before each use; a dull or damaged point should be resharpened or the bit replaced to avoid oversized holes or workpiece damage.