Drill bit Proline 71835 — metal, Ø18 mm, length 350 mm, 1 pc

Proline 71835 is a single 18 mm metal drill bit with a total length of 350 mm, designed for drilling metal in workshop and construction environments. The solid drill bit is intended for creating deep or through holes where extended reach and straight drilling are required. It is compatible with chucks and machines that accept an 18 mm shank and long-reach bits; using appropriate rotational speeds and cutting fluid will improve performance and tool life.

Advantages

This Proline drill bit offers a long working length that enables drilling through thick sections and reaching confined areas without the need for extensions. The solid construction provides rigidity for more accurate holes and improved stability at higher feed pressures. The Ø18 mm diameter yields a clean hole size for standard fasteners and fittings when used with correct pilot arrangements. The bit is supplied as a single piece for straightforward replacement and inventory control.

Suitable for

• Creating deep or through holes in metal sheets, plates and profiles
• Workshop and industrial maintenance tasks requiring extended reach
• Construction applications where long-reach metal drilling is necessary

Key specifications

• Material application: metal drilling
• Cutting diameter: 18 mm
• Overall length: 350 mm
• Quantity: 1 piece

How to use

Secure the drill bit in a compatible chuck or machine designed to accept long drill bits, ensuring the bit is held concentric and clamped firmly. Select an appropriate rotational speed and feed rate for the metal type being drilled; lower speeds are recommended for harder alloys. Apply cutting fluid or coolant to reduce heat buildup and prolong tool life. Begin drilling with steady pressure, withdraw occasionally to clear chips when drilling deep holes, and finish with a consistent feed to maintain hole straightness.

Usage recommendations

For best results, use a drill press or machine with stable support to avoid deflection. Match speed and coolant to the workpiece material, and inspect the bit for wear before use. Replace the bit if chipping or excessive wear is visible to maintain hole quality and operator safety.