RUKO SPB-DIN338-8,7mm-HSSCo kierrepora | 8,7 mm HSS-Co DIN 338

This RUKO twist drill bit features a 5% cobalt HSS-Co construction, delivering high heat and wear resistance for demanding metal drilling applications.

Overview

The RUKO SPB-DIN338-8.7mm-HSSCo is a precision twist drill bit conforming to DIN 338 standards. It has a diameter of 8.7 mm, a total length of 125 mm, and a flute length of 82 mm. The bit is fully ground from high-speed steel with 5% cobalt (HSS-Co), providing excellent durability and performance in tough materials.

What stands out

• 135° split point for accurate self-centering and reduced walking
• Cylindrical shank with h8 tolerance for secure chuck grip
• Bright finish for smooth chip evacuation
• Suitable for alloyed and unalloyed steel, stainless steel, cast iron, and non-ferrous metals up to 1100 N/mm² tensile strength

Technical details

• Drill bit type: Twist drill bit
• Standard: DIN 338
• Material: HSS-Co (5% cobalt)
• Diameter: 8.7 mm
• Total length: 125 mm
• Flute length: 82 mm
• Shank type: Cylindrical
• Point angle: 135°
• Point grind: Split point (cross ground)
• Cutting direction: Right-hand
• Tolerance: h8
• Manufacturing process: Fully ground
• Surface finish: Bright

Our verdict

A professional-grade cobalt twist drill bit that offers exceptional heat resistance and precision for demanding metalworking tasks.