Общий каталог Widia 2017 - страница 690

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The following charts list the largest thread pitch that can be applied on internal applications using TopThread threading inserts for 60° V-threading and Acme threading.

nominal thread minimum minor diameter size (minimum bore) (maximum diameter)

Metric-sized 60° V-Threading Limits Acme Threading Limits internal threading limitations internal threading limitations NT-1, NT-2 60° V-threading inserts NA and NAS-2, -3, -4, and -6 Acme threading inserts

nom threainal d sizemini thread diamum meter (mm)
TPINT-1NT-2NT-1NT-2
4,00M48 x 4.00–43,67–
3,00M42 x 3.00–38,75–
2,50M39 x 2.50M24 x 2,5036,2921,29
2,00M33 x 2.00M15 x 2,0030,8412,84
1,75M32 x 1.75M15 x 1,7530,1113,11
1,50M32 x 1.50M15 x 1,5030,3813,38
1,25M29 x 1.29M14 x 1,2527,6512,65
1,00M27 x 1.00M14 x 1,0025,9212,92
0,75M22 x 0.75M12 x 0,7521,1911,19
nominal thread sizemini thread diamum meter (mm)
TPINT-1NT-1NT-2
254.500114.3
2-1/24-1/24.100104.1
343.66593.1
43-1/23.25082.6
532.80071.1
62-1/22.33359.3
82-1/42.12554.0
1021.90048.3
121-3/41.66742.4
141-5/81.55439.5
161-1/21.43836.5
  • Thread pitch of 1mm and less can be cut with an NT-2 insert provided the

is 36,5mm or larger. internal threading limitations **NA-6 insert only. NT-3 and NT-4 60° V-threading inserts

nominal minimum

TPIthread sizethread diameter (mm)
6,00**M76 x 6.0069,50increase
TPInominal thread sizeminimum thread diameter (mm)
6,00M76 x 6.0069,50
5,50M73 x 5.5067,05
5,00M70 x 5.0064,59
4,00M64 x 4.0059,67
3,00M52 x 3.0048,75
2,50M48 x 2.5045,29
2,00M42 x 2.0039,84
1,75M40 x 1.7538,11
1,50M38 x 1.5036,38

clearance

multiple start threads. Modifi ed standard inserts may be furnished for