| Ø D | 4,90 mm |
| L | 86 mm |
| l | 52 mm |
| Weight | 0,008 kg |
| Helix Angle | λ = 25°÷30° |
| Point angle | ε = 128° |
Material
HSSCo -super high-speed steel 5% Co (HSSE) |
| Manufacturing Mode | V – ground from solid |
Usage
High-efficient drills with higher thermal stress resistance are recommended for drilling of parts made of hard-to-machine materials, alloyed steel and cast steel, especially for drilling of cold- or hot-work tool steel, rolls for rolling mills, head-treatable or carburizing steel, stainless steel. |
| Surface Treatment | bronzoxid |
Grinding Mode
Form C – conical lip relief, split point - form C |
| Note | |
Attachment:
|
