The Abraboro HSS-Co cobalt drill bit, measuring 4.0 mm in diameter, is a precision-engineered tool designed for demanding metalworking tasks. Manufactured in accordance with DIN 338 standards, this drill bit features a high-speed steel composition enriched with cobalt, which significantly enhances its hardness and thermal stability when working with challenging materials.
Advantages
The primary benefit of this cobalt drill bit is its exceptional heat resistance, which prevents the cutting edge from softening during prolonged use in high-friction environments. Its robust construction ensures minimal deflection and high dimensional accuracy, allowing for clean and precise holes in tough alloys. The specialized geometry of the bit facilitates efficient chip removal, reducing the risk of clogging and extending the overall service life of the tool.
Suitable for
- Drilling into stainless steel and acid-resistant steel
- Working with high-tensile alloyed steels
- General metalworking and industrial maintenance
- Precision drilling in cast iron and non-ferrous metals
When it may not be suitable
This drill bit is not optimized for drilling in soft materials like wood or plastics, where standard HSS bits are more cost-effective and efficient. It is also not intended for masonry or concrete applications, as the cutting geometry is specifically designed for metal shearing.
Key specifications
- Diameter: 4.0 mm
- Material: HSS-Co (Cobalt-enriched high-speed steel)
- Standard: DIN 338
- Application: Metal drilling
How to use
To achieve the best results, secure the workpiece firmly in a vice or clamp to prevent vibration. Use a drill press or a stable hand drill with a sharp, controlled feed rate. It is recommended to use a suitable cutting oil or coolant to further improve the finish and prolong the life of the drill bit, especially when working with stainless steel. Apply steady, moderate pressure and allow the bit to cut rather than forcing it through the material.
What to consider before purchase
- Ensure the drill chuck capacity supports a 4.0 mm shank diameter
- Verify the material hardness of your workpiece
- Consider using a center punch to prevent the bit from wandering at the start of the hole
Usage recommendations
Always wear appropriate eye protection and ensure the drill bit is properly seated in the chuck before starting the operation. Avoid overheating the bit by using appropriate drilling speeds and cooling agents.
