RUKO ZEB-HSS-DIN333-R-4.0mm streďovací vrták | HSS DIN 333 forma R 4,0 mm

This center drill bit from RUKO GMBH is engineered for precise centering holes in metalworking and other materials. Its HSS construction and DIN 333 Form R geometry deliver reliable performance for starting holes accurately before drilling.

Advantages

Ground from solid HSS for durability and sharpness. The 60° conical angle and cylindrical shank ensure stable centering and accurate hole positioning.

Suitable for

• Steel
• Cast steel
• Non-ferrous metals
• Plastics

Key specifications

• Drill type: Center drill
• Standard: DIN 333
• Form: R
• Material: HSS
• Body diameter (d1): 4.0 mm
• Pilot drill diameter (d2): 1.6 mm
• Overall length (L1): 45 mm
• Conical angle: 60°
• Shank type: Cylindrical
• Cutting direction: Right-hand
• Surface finish: Bright / uncoated
• Manufacturing process: Ground from solid
• Shank tolerance: h8

Recommendations

Use with appropriate cutting fluid for extended tool life. Ensure the workpiece is securely clamped before starting the centering operation.