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SELECTION GUIDE
Indexable Counterboring Heads
Applications STS (Single Tube System) DTS (Double Tube System)
ISC- EA ISC- EC ISC– IA/IC IDC-EA/EC
Drill head DEEP DRILLING - BTA SYSTEM
Drill diameter (inch) Ø.984 - 1.574 Ø1.575 - 11.496 Ø.984 - 1.574 Ø1.575 - 11.574 Ø.984 - 1.574 Ø1.575 - 7.243
External 4-start thread 3 3 - - 3 3
Thread type Internal single-start thread - - 3 3 - -
Hole tolerance IT10 IT10 IT10 IT10 IT10 IT10
Surface finish Ra (μinch) 80 80 80 80 80 80
Deep hole drilling machines 3 3 3 3 3 3
Machine NC machines - - - - - - - - 3 3
3
Lathes
3
Machining centers M/C - - - - 3 3
Steel
P Stainless ••• ••• ••• ••• ••• •••
•••
•••
•••
•••
•••
•••
M
Workpiece material K Non-ferrous ••• ••• ••• ••• ••• •••
Cast iron
•••
•••
•••
•••
N
•••
•••
Superalloys
S
••
••
••
H Hard materials (≥40HRC) •• •• •• •• •• ••
••
••
••
Insert type XPMT TPMX XPMT TPMX XPMT TPMX
Plus cartridge and guide pad
+.039” - +.196” - 3 - 3 - 3
Page 286 289 294 297 302 305
•••(Excellent) •(Standard)
241
