| l | 220 mm |
| D | 49,5 mm |
| L | 369 mm |
Note
Use:
High performance drills with increased heat resistance recommended for drilling in heavy duty machining parts.
Drills of 8% What have better heat resistance than 5% Co, where a more economical material variant is used.
They are really hard, wear-resistant but also brittle.
Requires higher machine rigidity - tool - workpiece.
Helix angle: λ = 25 ° ÷ 30 °
Peak angle: ε = 128 °
Drilling depth: 5 x D |
Attachment:
Download:
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