Guhring 9005150021800 Size 44 Stub Drill Bit 130 Deg

Product Description

The GUHRING 9005150021800 is a stub-length (screw machine length) twist drill bit designed for productive drilling in steel and cast iron. Built from powdered metal and coated with GUHRING nano-FIREX multi-layer coating, it delivers extended tool life in demanding production environments. The bit features a 130-degree cone relief point, a parabolic flute profile for fast chip evacuation, and a web-thinned tip for reduced thrust and accurate entry. At 1.5748 inches overall length with a 0.5118-inch flute length, it is sized for short-reach, high-cycle applications. Licensed machinists, toolroom technicians, and production operators are the primary users.

This drill bit is suited for drilling steel and cast iron in screw machine, turret lathe, CNC turning center, and general production machining applications where a compact stub-length tool is required. The straight cylindrical shank fits standard drill chucks and collet holders. The 3xD flute-to-diameter ratio and parabolic flute geometry support chip clearance in blind-hole and through-hole drilling at moderate depths. It is not recommended for non-ferrous or abrasive composite materials without verifying coating compatibility.

Key Features

• nano-FIREX multi-layer coating for heat and wear resistance in steel and cast iron drilling
• 130-degree cone relief point with web thinning for reduced entry thrust and accurate hole positioning
• Parabolic fast-spiral flute for efficient chip evacuation in short-depth holes
• Stub (screw machine) length at 1.5748 inches OAL for rigid, close-tolerance setups
• Straight cylindrical shank with h8 diameter tolerance for consistent chuck grip
• Conforms to DIN 1897 specification for dimensional interchangeability

Compatibility

Designed as an OEM-style screw machine length drill bit for use in standard drill chucks and collet holders accepting a 0.0858-inch straight cylindrical shank. Primary workpiece materials are steel and cast iron per manufacturer specification.

Installation Notes

Installation and tool changes should be performed with the machine fully de-energized and all spindle motion stopped. Secure the straight shank fully within the chuck or collet to the recommended grip depth before tightening. Verify spindle speed and feed rate against published parameters for the workpiece material and drill diameter before cycling. Do not exceed the rated maximum drilling depth of 0.3830 inches without retracting and clearing chips.