Drill bit Proline 90830 — metal drill bit, Ø 8 mm × 300 mm, 1 pc

Proline 90830 is a single metal drill bit with an 8 mm diameter and 300 mm overall length. Designed for drilling metal, this straight-shank bit is compatible with hand drills and drill presses and is suitable for through-holes and deep drilling tasks. It delivers a precise cylindrical hole for fabrication, repair and mechanical assembly applications.

Advantages

The drill bit features a geometry optimized for centered drilling and reduced load during cutting, improving drilling accuracy and tool life. Its length and straight shank enable access to deeper drilling positions while maintaining tool stability in a chuck. The single-piece design ensures consistent performance for metalworking tasks and straightforward mounting in standard drill chucks.

Suitable for

• Drilling through-holes in steel and other metals
• Deep-hole drilling where extended reach is required
• Fabrication and assembly tasks in workshops and maintenance
• Use with hand-held drills and drill presses

Key specifications

• Diameter: 8 mm
• Overall length: 300 mm
• Shank type: straight shank for standard chucks
• Quantity: 1 piece
• Intended material: metal drilling

How to use

Secure the Proline 90830 drill bit in the drill chuck and tighten firmly before starting. Select an appropriate rotational speed and feed rate for the metal you are drilling; use lower speeds and steady feed for harder metals. Apply cutting fluid or lubricant when required to reduce heat and extend tool life. For deep holes, periodically retract the bit to clear chips and prevent clogging. Maintain a stable drill setup to avoid deflection and ensure a precise cylindrical hole.

Usage recommendations

Use appropriate personal protective equipment, clamp the workpiece securely, and follow the drill manufacturer’s guidance for speed and coolant. Match drill speed and lubrication to the specific metal to optimize performance and tool life.