WIDIA - Полный каталог инструмента - 2017
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Technical Information
TopThread™
60° V-Thread Crest Turning Application Data
feed direction
feed direction
NTC crest turning insert
for (P ) 2mm) and finer.
NTC crest turning insert
for (P * 3mm) and coarser.
NOTE: NTC inserts automatically control root to crest dimensions.
Therefore, in setting up threading operations with NTC inserts,
check the O.D. or I.D. at the thread crest for correct dimensions.
60° V-Thread Application Data
60° V-Thread Crest Turning Application Data
insert
catalogue number
NJ-3014R/L12
NJK-3008R/L20
nose radius
on insert
(mm)
0,317/0,342
0,190/0,215
thread radius per
MIL-S-8879A
(mm)
0,317/0,381
0,190/0,0228
“J” thread note for catalogue
The controlled root radius thread form (SAE8879C) is defined for the external
thread only. To machine the corresponding internal thread, choose any insert
that will cut a unified class 2B thread, then bore the minor diameter to size.
Refer to SAE8879C and MIL-S-8879C and SAEAS8879D for the correct “J”
thread minor diameter values.
insert
description
radius
feed direction
radius
feed direction
insert
NT-1
NT-2
NT-2-K
NTF-2
NTK-2
NTP-2
NT-3
NT-3-K
NT-3-C
NT-3-CK
NTF-3
NTK-3
NTP-3
NT-4
NT-4-K
NT-4-C
NT-4-CK
NTF-4
NTK-4
NTP-4
D
(mm)
1,90
28,70
28,70
15,75
15,75
28,70
37,59
37,59
37,59
37,59
21,08
21,08
37,59
49,78
49,78
49,78
49,78
21,08
21,08
49,78
E
(mm)
1,11
1,90
1,90
1,01
1,01
1,90
2,46
2,46
2,46
2,46
1,37
1,37
2,46
3,22
3,22
3,22
3,22
1,37
1,37
3,22
*Based on maximum insert radius size and class 2A and 2B thread specications.
recommended TPI*
external
–
36–8
36–8
44–14
44–14
36–8
20–6
20–6
11–6
11–6
44–10
44–10
20–6
20–4
20–4
11–4 1/2
11–4 1/2
44–10
44–10
20–4
internal
24–12
20–7
20–7
24–12
24–12
20–7
12–5
12–5
6 (only)
6 (only)
24–9
24–9
12–5
12–4
12–4
6–4 1/2
6–4 1/2
24–9
24–9
12–4
recommended TP*
external
–
0,70–3,00
0,70–3,00
0,60–1,75
0,60–1,75
0,70–3,0
1,25–4,00
1,25–4,00
2,50–4,00
2,50–4,00
0,60–2,50
0,60–2,50
1,25–4,00
1,25–6,25
1,25–6,25
2,50–5,50
2,50–5,50
0,60–2,50
0,60–2,50
1,25–6,25
internal
1,00–2,00
1,25–3,50
1,25–3,50
1,00–2,00
1,00–2,00
1,25–3,50
2,00–5,00
2,00–5,00
4,00 (only)
4,00 (only)
1,00–2,50
1,00–2,50
2,00–5,00
2,00–6,25
2,00–6,25
4,00–5,50
4,00–5,50
1,00–2,50
1,00–2,50
2,00–6,25
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