Drill bit Proline 71834 — metal drill bit Ø18 mm, length 340 mm, 1 pc

Proline 71834 is a single metal drill bit with an 18 mm diameter and a total length of 340 mm. Designed for drilling metal, it is suitable for use in hand drills and drill presses to create through-holes and larger openings in steel and other ferrous materials. The bit is supplied as a single piece and is intended for industrial and professional applications where a long reach and large-diameter hole are required.

Advantages

The drill bit features a double-twist design that facilitates quicker chip evacuation and maintains drilling efficiency in deep holes. A four-flute insert with optimised geometry improves cutting stability and helps reduce clogging during continuous drilling in metal. Its long 340 mm length provides extended reach for access into deep workpieces or fixtures while the robust 18 mm diameter ensures suitable clearance for bolts, pipes, and large fasteners.

Suitable for

• Drilling through-holes in steel plates and structural metal
• Metal fabrication and maintenance tasks requiring long-reach drilling
• Use with hand drills and drill presses for larger-diameter holes
• Construction and industrial workshop applications involving ferrous materials

Key specifications

• Diameter: 18 mm
• Total length: 340 mm
• Material application: metal / ferrous materials
• Design features: double-twist geometry with 4-blade insert for chip evacuation
• Package quantity: 1 piece

How to use

Select an appropriate drill speed and feed rate for the metal being machined and secure the workpiece before drilling. Fit the Proline 71834 into the drill chuck and ensure it is tightly clamped and concentric. Use cutting fluid or coolant as recommended for the metal type to prolong tool life and improve chip removal. Apply steady pressure, allow the bit to cut without excessive force, and periodically withdraw the bit to clear chips when drilling deep holes.

Usage recommendations

For best results in steel and other ferrous metals, use medium to low spindle speeds with consistent lubrication and moderate feed. Inspect the bit for wear or damage before use and replace if cutting performance degrades.