Stable machining of large diameter x deep holes Walter D3120
High rigidity indexable insert drill
The high-rigidity design of the straight flute enables stable machining, especially when drilling holes by turning.
One indexable insert shape for outer and inner seat.
You have 3 options for the breaker.
High rigidity design with straight cutting edge.
Stable machining is possible even in large diameter and deep hole.
General indexable insert drill (Japanese other company's)
4 cutting edges with one indexable insert shape for outer and inner seat
3 options of breaker: Comventiional type (E57), high stability type (A57), and light cutting type (E67)
Φ80 external diameter x 140mm length
Workpiece material: S45C
Cutting condition：Vc=80m/min f=0.1mm/rev Depth of cut100mm
Result: No vibration and quiet machining noise compared to Japanese other company's product.
Stable chip control from the start to 100mm.
Japanese other company's product
For large diameter and deep holes machining
High rigidity holder and insert makes hard to vibrate.
3 types breaker
You can choose the proper breaker depending on machining application.