FANAR drill bit WIERTLO NC 90 FI 20.00 mm HSSE, working length 40 mm, overall length 131 mm

FANAR drill bit WIERTLO NC 90 FI 20.00 mm HSSE, working length 40 mm, overall length 131 mm is a solid twist drill designed for metalworking tasks. Made from HSSE (high-speed steel with cobalt), this 20.00 mm diameter drill delivers increased heat resistance and longer wear life compared with standard high-speed steel. It is intended for drilling holes up to 40 mm deep in steel and alloy materials during production, maintenance, and general workshop applications.

Advantages

The HSSE construction provides improved hardness at elevated temperatures and greater resistance to wear, extending tool life in demanding drilling operations. Its solid twist design ensures precise centering and stable cutting performance, while the 40 mm working length balances reach and rigidity for cleaner, more accurate holes. The 131 mm overall length facilitates secure mounting in a range of chucks and holders used in industrial and workshop equipment.

Suitable for

• Drilling through steel and alloy materials
• Production line holemaking and shop-floor machining
• Maintenance and repair workshop tasks
• Use in drill presses and machine tools with compatible chuck capacity

Key specifications

• Diameter: 20.00 mm
• Working length (cutting length): 40 mm
• Overall length: 131 mm
• Material: HSSE (high-speed steel with cobalt)
• Type: Solid twist drill bit

How to use

Secure the drill bit in an appropriate chuck or tool holder ensuring proper clamping depth and concentricity. Select cutting speed and feed appropriate for the specific steel or alloy being machined; slower speeds and steady feeds are recommended for harder or heat-sensitive materials. Use suitable cutting fluid to reduce heat and improve chip evacuation. Apply steady axial pressure while maintaining alignment; withdraw periodically to clear chips when drilling deeper holes.

Usage recommendations

For best results, match spindle speed and feed to material hardness and diameter, use coolant or cutting oil to extend tool life, and inspect the drill for wear before precision operations. Replace the bit when geometry or edge condition degrades to maintain hole quality and prevent workpiece damage.