Page 6 - HOLE_MAKING_CATALOG_INCH_2022_P237-P372
P. 6
SELECTION GUIDE
DEEP DRILLING - BTA SYSTEM
Indexable Trepanning Heads
Applications STS (Single Tube System)
ISTR
EC IC
Drill head
Drill diameter (inch) Ø3.937 - 12.913 Ø3.937 - 12.047
Thread type Internal single-start thread 3 3
External 4-start thread
-
-
Hole tolerance IT10 IT10
Surface finish Ra (μinch) 80 80
Deep hole drilling machines 3 3
Machine Lathes - -
Machining centers M/C - -
P Stainless ••• •••
Steel
M
•••
•••
Workpiece material K Non-ferrous ••• •••
Cast iron
•••
•••
N
S
Superalloys
••
••
H Hard materials (≥40HRC) •• ••
Insert type TPMX TPMX
Page 311 315
•••(Excellent) •(Standard)
242 ISCAR