WIDIA - soustružení | KL-TECH s.r.o. | www.klte.cz widia-soustruženi | Page 593

TopThread ™
Threading Selection Guide
Step 3 • Choose Insert for Application
• See threading insert overview on page F8.
• Select cresting inserts for fully controlled thread form including
diameter control. Cresting inserts eliminate the need for deburring.
insert
size catalogue
number TN6025 TN6010
2 NT-2RK  
3 NT-3RK  
4 NT-4RK  
• Non-cresting partial profi le inserts can cut a variety of thread pitches.
• Note insert size for toolholder selection.
Step 4 • Select Grade and Speed
Recommendations for Grade and Speed Selection — m/min
workpiece
material
steel
chip control
or neutral
insert style
stainless steel
cast iron
chip control
or positive
neutral
non-ferrous metals
positive
high-temp alloys
positive
optimum cutting
conditions TN6010
160–750 TN6010
160–600 TN6010
230–700 – TN6010
65–400
fi rst choice TN6025
130–650 TN6025
130–450 TN6025
200–475 TN6025
160–1150 TN6025
35–330
Examples:
Chip Control:
Neutral:
Positive:
NT-K or NT-CK (partial profi le only)
NT, NT-C, NTF, NTC, NJ, NJF,
NDC-V, NA, NDC, NTB-A/B
NTP, NTK, NJP, NJK
TopThread Threading Example:
material:
workpiece diameter:
8 TPI Acme internal
right-hand thread
alloy steel
114,3mm
good cutting conditions
feed towards the chuck
Recommendation:
insert: NA3L8
grade: TN6010
insert size:
boring bar:
gage insert:
3
A40NER3
N.3L
speed: 150 m/min
infeed passes*: 12 passes
* Infeed recommendations provided in technical data section on pages F88–F91.
widia.com
F7
application: