RUKO SPB-DIN338-HSS-TiN σπειροειδές τρυπάνι 9,9 mm

Twist drill bit with 9.9 mm diameter, precision ground from high-speed steel and coated with titanium nitride for high wear resistance and long tool life. The TiN coating reduces friction and heat build-up, enabling higher cutting speeds and improved chip evacuation in demanding drilling operations.

Advantages

The gold TiN coating provides a hard, low-friction surface that significantly extends tool life compared to uncoated HSS drills. The fully ground flutes ensure accurate hole dimensions and smooth chip flow, while the 118° point angle offers a good balance between centering and cutting performance in general-purpose applications.

Suitable for

• Alloyed and unalloyed steel
• Cast iron
• Non-ferrous metals
• Plastics
• Wood

Key specifications

• Drill bit type: Twist drill bit
• Standard: DIN 338
• Material: High-speed steel (HSS)
• Coating: Titanium nitride (TiN)
• Diameter: 9.9 mm
• Overall length: 133 mm
• Flute length: 87 mm
• Shank type: Cylindrical
• Point angle: 118°
• Cutting direction: Right-hand
• Tolerance: h8
• Manufacturing process: Fully ground
• Colour: Gold

Recommendations

Use with a suitable drill chuck or collet, and apply cutting fluid when drilling steel to maximize tool life. For best results, pre-drill with a smaller diameter when working with hard materials.