Page 134 - Threading_Handbook

THREAD TURNING The tables below define the recommended maximum possible workpiece diameters for
Application
• What is the machining diameter?
Machining Diameter

external threading, and the recommended minimum possible bore workpiece diameter for
internal threading based on ISCAR's threading families.

External Threading
Family/Application
CUT-GRIP




PENTACUT Up to Ø20 mm Up to Ø50 mm Up to Ø250 mm Unlimited
V
V


SWISSCUT V   
ISCAR Threading Laydown Line V  V V
V - Recommended (1 choice); • - Suitable (2 choice); o - Can be selected (optional)
nd
st
Internal Threading
Family/Application From From Ø4 From From Ø8 From From
Ø2.4 mm mm Ø7 mm mm Ø12.5 mm Ø20 mm
GEPI Line --- --- --- ---  V
CUT-GRIP
TIPI Line --- --- --- --- --- V
PICCOCUT V V V V V V
MINICHAM ---     
CHAMGROOVE --- --- ---  V 
ISCAR Threading Laydown Line --- ---   V V
st
nd
V - Recommended (1 choice); • - Suitable (2 choice); o - Can be selected (optional)
Application
• Does the threading machine
Operation Stability
have good or bad stability?

The possibility of increasing tool life, especially when the threading process is unstable, can
be expedited by positioning and clamping the insert into the pocket of the holder. ISCAR’s
recommendation for interrupted machining, expected vibrations, etc., is to use a more rigid
clamping system. For external threading, you can use the table below, whereas for internal
threading, contact an ISCAR consultant.

External Threading

Family/Application Unstable Applications
CUT-GRIP
PENTACUT
ISCAR Threading Laydown Line
SWISSCUT
Family/Application Stable Applications

134 ISCAR