Drill bit Proline 72280, 22 mm diameter, 800 mm length, single piece

Proline 72280 is a single-piece metal drill bit with a 22 mm diameter and an overall length of 800 mm. The long shank design is intended for drilling metal and compatible materials where deep or through holes are required. Supplied as one piece, this drill bit is suitable for use in machines and holders that accept its dimensions and is positioned for industrial, workshop, and construction applications.

Advantages

The Proline 72280 offers a long 800 mm shank that enables drilling into thick workpieces or through multiple layers without frequent repositioning. Its 22 mm diameter provides a stable bore size for fastening and assembly tasks. The single-piece construction reduces the risk of joint failure under load, and the double-twist geometry facilitates efficient chip evacuation and faster penetration in compatible materials. A four-blade insert with optimised geometry promotes consistent cutting action and steady bore quality.

Suitable for

• Drilling deep or through holes in metal plates and structural sections
• Workshop and industrial drilling tasks requiring extended reach
• Preparatory holes for fasteners and assembly in construction settings
• Use in machine tools and drill presses compatible with the bit’s length and diameter

Key specifications

• Material application: metal and compatible materials
• Diameter: 22 mm
• Overall length: 800 mm
• Piece count: single-piece bit
• Tip/geometry features: double-twist flute and four-blade insert with optimised geometry

How to use

Secure the Proline 72280 in a compatible chuck or holder that accepts an 800 mm long shank and 22 mm diameter. Use appropriate speeds and feeds for the material being drilled, cooling or lubrication as required to control heat and extend tool life. Begin drilling with a steady feed, allowing the double-twist flutes to evacuate chips; retract periodically if drilling deep holes to clear swarf. Ensure the workpiece is firmly clamped to prevent movement during drilling.

Usage recommendations

For optimal performance when drilling metal, use cutting fluid appropriate for the metal type, select spindle speeds and feed rates consistent with a 22 mm diameter tool, and verify machine capacity for an 800 mm overall length to maintain safety and accuracy.