Page 820 - Tungaloy Catalog

Basic Selection of Drilling Tools

Application ranges of drilling tools

Indexable drill Solid drill, Brazed carbide drills

100 200 Standard gun drills

8 35
20
5
SLT GUN DRILLS
10
L/D 4 L/D 5 FDC
3 4 DSX

2 3
DSE
2 DMX
1
1
0
.393 .787 1.18 1.57 1.97 2.36 2.75 3.15 .118 .393 .590 .787 1.18
Drill diameter (in) DSM Drill diameter (in)

Large diameter drilling

11-8 Applicable work materials
Steel Stainless Cast lron Non-ferrous
TDXU

Coolant
Structure supply method Coating Helix angle Shank Point angle
11 Indexable Internal Drill diameter Approximate accuracy
-
-
-

Hole depth
Hole diameter (IT) 11~
< 5 x tool diameter ø500 ~ ø2.0(in) Roughness (RzJIS): 12~
d Stabilization of spindle power
Drilling Tools Features 25 Stable
New TDX type
Excellent surface finish and stable chip evacuation with
newly developed drill body!
• Highly economic = TDX concept. 22
15
• Excellent chip evacuation! 10
• Applicable to various machining applications. Spindle power (A)
• Ideally-balanced with a strong and rigid design = TDX concept. 5 Workpiece : 440 Stainless steel
• Improved drilling durability! Drill : 750”
0 10 20 30 40 50
Cutting time (S) Cutting speed : SFM = 590
Competitor A Feed : f = .005”/rev
The new AH725 PVD coated grade 25 Mechanical fatigue Drilling depth : 3D (Blind)
now offers new chipbreakers! Unstable
TUNGAL O Y Machine : Vertical machining
• Flat and smooth coated surface by adopting 22 center
“Triple Force Technology”. 15 Cutting fluid : Water soluble
• Significantly improved resistance to chip welding and Spindle power (A) 10 type
insert edge chipping. 5

0 10 20 30 40 50
Cutting time (S)

11–4