Page 44 - HOLE_MAKING_CATALOG_INCH_2022_P237-P372

SELECTION GUIDE
DEEP DRILLING - BTA SYSTEM

Brazed Drilling Head

Single Tube System – External Thread:
DSD-E0 - Deep Single Tube Drills with
External Single Thread Connection and a
Brazed Single Tip (.315-.583 dia.)
DSD-E1 - Deep Single Tube Drills with
External 2 and 4 Start Thread Connections
and a Single Brazed Tip (.496-.787 dia.)
DSD-E2/E3 - Deep Single Tube Drills with
External 2 and 4 Start Thread Connections
and 2 or 3 Brazed Tips (.496-2.559 dia.)

Double Tube System:
DDD-E3 - Deep Double Tube Drills with External 4 Start
Thread Connection and Brazed Tips (.724-2.559 dia.)

Grade of Brazed Heads

I S D - E 3 1.105 DT - PZ

Deep drilling / Chipbreaker
D Drill diameter
Counter boring Brazed drill
Inch - Deep drilling
I
/ Counter boring
Special - Deep drilling
S
/ Counter boring
P Steel
S Single Tube M Stainless
D Double Tube K Cast Iron
N Aluminum
D Drill
Counterbore with
C
Through Hole
Counterbore w/o Grade
T
Through Hole
TR Trepanning
0 Uncoated
E External Thread 1 TiAIN Coating
I Internal Thread Z TiCrAIN Coating

Brazed, 1 tip, 1 thread
0
start (MBU type)
1 Brazed, 1 tip (UTE type)
2 Brazed, 2 tip (BTU type)
3 Brazed, 3 tip (BTU, ETU type)

280 ISCAR