Drill bit EPM HSS cylindrical 7 mm for metal, model E-500-1070

EPM HSS cylindrical drill bit 7 mm is designed for cutting and drilling metal. Made from high-speed steel (HSS), this 7 mm cutter is suitable for use in hand drills and drill presses. It is intended for drilling through steel and other ferrous and non-ferrous metals and is appropriate for tasks in metalworking, fabrication, maintenance and repair.

Advantages

The HSS material provides high hardness and wear resistance at elevated temperatures encountered during metal drilling. The cylindrical shank ensures secure clamping in standard drill chucks and drill presses. The 7 mm diameter offers a balance between hole accuracy and material removal rate for common metalworking operations. Geometry and cutting edges are optimized for effective chip evacuation and reduced wandering when starting holes in metal surfaces.

Suitable for

• Drilling holes in steel and stainless steel
• Working with non-ferrous metals such as aluminium and brass
• Maintenance, repair and fabrication tasks
• Use in hand drills and drill presses

Key specifications

• Material: high-speed steel (HSS)
• Shank type: cylindrical
• Diameter: 7 mm
• Intended use: drilling metal (ferrous and non-ferrous)
• Compatible tools: hand drills and drill presses

How to use

Secure the drill bit in a properly rated chuck with a firm grip on the cylindrical shank. Mark the drilling position and, where possible, use a center punch to prevent walking. Select an appropriate spindle speed and cutting fluid for the metal being drilled: higher speeds for softer metals, lower speeds for harder steels. Apply steady, moderate feed pressure and allow the bit to cut without excessive force to avoid overheating. Clear chips regularly and, for deep holes, retract periodically to remove swarf and cool the cutting edges.

Usage recommendations

Use cutting fluid or lubricant when drilling tougher steels to extend tool life and improve surface finish. Match drill speed and feed to the material: lower RPM for hard steels, higher RPM for aluminium. Inspect the bit before use and replace if worn or chipped to maintain hole quality and operator safety.