SSPB220 Punch Pin

Work material : HAP40(65HRC)
Work size : Φ25
Machining depth : 30mm
Coolant : Oil mist
Machining time: 2hr 57min




●Adopted spiral ball shape to improve sharpness of cutting edge.
●Adopted cutting edge shape to improve the chipping resistance of cutting edge.
●When peripheral cutting edge makes contact with cutting surface,vibration occurs by an increase in cutting resistance and it affects tool life and cutting surface quality.The influence can be reduced by adoption of the strong back taper shape.
●Enlarged standard tool size up to R3 to extend application range.

Cutting condition: