Drill bit Proline 72080 — metal, 20 mm diameter, 800 mm length, 1 pc

Proline 72080 is a single metal drill bit with a 20 mm cutting diameter and an overall length of 800 mm. Designed for drilling metal, this straight-shank bit is intended for professional and workshop applications that require long-reach drilling in steel and other ferrous materials. The bit is supplied as one piece and is compatible with drill machines that accept straight shanks of this size; correct speeds and cutting fluids should be used for efficient metal cutting and prolonged tool life.

Advantages

The elongated 800 mm length provides extended reach for drilling deep or through holes without repeatedly repositioning the workpiece. A 20 mm cutting diameter delivers a stable bore for fast material removal in ferrous metals. The straight shank ensures secure mounting in standard chucks and reduces runout during operation. The single-piece construction offers mechanical rigidity needed for industrial and professional use.

Suitable for

• Drilling deep or through holes in steel and other ferrous metals
• Workshop and industrial metalworking tasks requiring long-reach tools
• Use with bench drills, radial drills or portable drills that accept 20 mm straight shanks

Key specifications

• Cutting diameter: 20 mm
• Overall length: 800 mm
• Material application: metal and ferrous materials
• Shank type: straight shank
• Package quantity: 1 piece

How to use

Secure the drill bit in a compatible chuck designed for straight shanks and ensure the chuck tightening force is appropriate for the 20 mm diameter. Select a rotational speed suitable for the specific metal being drilled and apply cutting fluid or coolant where necessary to reduce heat and extend tool life. Use steady feed pressure and allow the bit to clear chips regularly to avoid clogging; for deep holes, retract periodically to remove swarf and reapply coolant. Verify drill alignment before starting to prevent misaligned or oversized holes.

Usage recommendations

For best results when drilling steel and other ferrous materials, use moderate speeds, adequate cutting fluid, and periodic withdrawal for chip removal. Ensure the drill press or machine is rigid and the workpiece is securely clamped to maintain hole accuracy and prolong bit life.