TungDrillBig – Sleeve – AH725


TungDrillBig is applicable up to φ80mm machining, which is larger than the competitor’s maximum allowable drilling size in their standard series. Thus TungDrillBig can reduce the number of boring processes required afterwards, leading to shortening of its total machining time compared to the competitor. AH725 with “Premiumtec” prevents welding and chipping even when machining stainless steel, resulting in stable and longer tool life.

Industry Engineering
Component Sleeve
Material ISO code M - Stainless steelM - Stainless steel
Work material X5CrNi18-9
Machine(spindle type) CNC Lathe
Tool family Holemaking
Tool category Drilling
Product name TungDrillBig
TSR No. 101D


Tungaloy Competitor
Body TDX67-73F50-2.5 Indexable drill
Insert XPMT110412R-DJ Square type insert
Grade AH725 PVD

Cutting conditions

Tungaloy Competitor
Tool diameter DC (mm) 67 58
Cutting speed V/c (mm/min) 120 120
Feed f (mm/rev) 0.1 0.1
Coolant Water soluble(Internal) Water soluble(Internal)


Tool life13 times