Drill bit Michelin 7.0 x 225 mm

Drill bit Michelin 7.0 x 225 mm is a straight-shank twist drill designed for metal and general-purpose drilling. With a 7.0 mm cutting diameter and a 225 mm overall length, this drill bit is suitable for hand drills and drill presses and is compatible with standard chucks. It is intended for through-holes and deeper drilling operations in workshop and construction environments where a reliable, long-reach tool is required.

Advantages

The straight shank provides stable clamping in standard drill chucks and reduces slippage during operation. The 225 mm overall length delivers extended reach for deep holes and hard-to-reach areas while maintaining adequate rigidity for controlled drilling. The 7.0 mm cutting diameter is a common size for mechanical and assembly tasks, offering compatibility with typical fasteners and fittings. The geometry and material are optimised for metal and general-purpose applications, balancing cutting performance and tool life.

Suitable for

• Drilling through metal sheets, plates and structural components
• Deep-hole drilling in workshop and construction tasks
• Use with handheld electric drills and bench drill presses
• General-purpose workshop drilling where standard chucks are used

Key specifications

• Cutting diameter: 7.0 mm
• Overall length: 225 mm
• Shank type: straight shank for standard chucks
• Intended materials: metal and general-purpose materials
• Application: through-holes and deep drilling

How to use

Secure the drill bit firmly in the drill chuck, ensuring correct alignment with the drill axis. Use appropriate cutting speed and feed rate for the metal being drilled and, if necessary, apply cutting fluid to reduce heat and extend tool life. For deep holes, periodically withdraw the bit to clear chips and prevent clogging. Maintain steady pressure without forcing the bit to avoid bending or breakage. After use, clean chips and residue from the flutes and store the bit in a dry place.

Usage recommendations

Choose drill speeds and lubricants according to the specific metal type: lower speeds for harder alloys and higher speeds for softer materials. When drilling deep holes, peck drilling (intermittent withdrawal) helps chip evacuation and reduces heat buildup. Inspect the cutting edges regularly and replace the bit if signs of wear or chipping appear to maintain hole quality and operator safety.