TMA High productivity in threading is the main advantage of chipless roll taps.
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COLD FORMING ROLL TAPS FOR THREAD ROLLING MACHINES

 


 

Applications ot of chipless roll taps

Roll taps (fluteless taps, cold forming taps) are recommended to be used when producing threads by plastic deformation (rolling) in parts made of non-ferrous and ferrous metals with high plasticity. These materials include: aluminum and its alloys, copper, brass, bronze with a high copper content, zinc and its alloys, low-carbon and high-plastic stainless and heat-resistant steels. Compared to cutting taps, forming taps have greater strength, provide accurate threads with low surface roughness, and increase thread strength (up to 20%).

Their main difference from cutting taps is the absence of longitudinal grooves that form cutting edges. In addition, the champfer on these taps is significantly shorter. At the end of the threaded part of the fluteless taps, there are small symmetrically located coolant grooves.

Chipless roll taps are much stronger than regular taps, their breakages are very rare and there are almost no defects of parts due to taps breakdowns. Thanks to the long threaded part, the tap can be re-sharpened several times. Thus, the service life of the roll tap is much longer than cutting taps.

High productivity in threading is the main advantage of chipless roll taps. They are used for thread forming not only in through holes, but also in blind holes. The thread rolling profile is formed by pressing the tool into the workpiece material and extruding part of the material into the tool cavity.


Outlook & Drawing

Long Thread Fluteless Tap for Non-Ferrous Alloysvanadium-containing high-speed steel with nitride coating


Long Thread Fluteless Tap for Non-Ferrous Alloys



(coarse and fine thread taps have the same shape)
G - Chamfer Length: 2 threads for blind holes (B) or 4 threads for through holes (P)
H - lubricating groove


Metric Coarse Threads
Thread Specification (D) шаг A
Total Length
B
Thread Length
C
Shank Dia.
E
square length
F
square
number of facets
size tolerance size tolerance size tolerance size tolerance
2 0.4 40 ±0.7 14 ±1 3      0 -0.04 5 2.5 0 -0.1 4
2.2 0.45 42  〞  〞  〞  〞  〞  〞  〞  〞  〞
2.3   0.4  〞  〞  〞  〞  〞  〞  〞  〞  〞  〞
2.5 0.45 44  〞 15  〞  〞  〞  〞  〞  〞  〞
2.6  〞  〞  〞  〞  〞  〞  〞  〞  〞  〞  〞
3 0.5 46  〞 18 ±1.4 4  〞 6 3.2  〞  〞
0.6  〞  〞  〞  〞  〞  〞  〞  〞  〞
3.5 48  〞  〞  〞  〞  〞  〞  〞  〞
4 0.7 52  〞 20 5  〞 7 4  〞  〞
0.75  〞  〞  〞  〞  〞  〞  〞  〞  〞
4.5 50  〞  〞  〞  〞  〞  〞  〞  〞
5 0.8 60  〞 22 5.5  〞  〞 4.5  〞  〞
0.9  〞  〞  〞  〞  〞  〞  〞  〞  〞
5.5  〞  〞  〞  〞  〞  〞  〞  〞  〞
6 1 62  〞 24 6  〞  〞  〞  〞  〞
All table dimensions in mm.


American UNC Thread
Thread Specification (D) Threads per inch (tpi) A
Total Length
B
Thread Length
C
Shank Dia.
E
square length
F
square
number of facets
size tolerance size tolerance size tolerance size tolerance
No .1 64 36 ±0.7 12 ±1 3      0 -0.04 5 2.5 0 -0.1 4
2 56 42  〞 14  〞  〞  〞  〞  〞  〞  〞
3 48 44  〞 15  〞  〞  〞  〞  〞  〞  〞
4 40  〞  〞  〞  〞  〞  〞  〞  〞  〞
5  〞 46  〞 17 ±1.4 4  〞 6 3.2  〞  〞
32 48  〞 18  〞  〞  〞  〞  〞
U 1 / 4 20 62  〞 24  〞 6  〞  〞  〞  〞  〞
All table dimensions in mm.


Ordering of Roll Taps for Non-Ferrous Alloys with Long Thread

Metric thread
RG NO. Thread Size TAP Limit Chamfer (G) Total Length (A) Thread Length (B) Shank Dia. (C)
200283 M1 X 0.25 RH3 B 30 6 3
201283 M1 X 0.25 RH3 P 30 6 3
200284 M1 X 0.25 RH4 B 30 6 3
201284 M1 X 0.25 RH4 P 30 6 3
200285 M1 X 0.25 RH5 B 30 6 3
201285 M1 X 0.25 RH5 P 30 6 3
201353 M1.2 X 0.25 RH3 P 32 6 3
200353 M1.2 X 0.25 RH3 B 32 6 3
201354 M1.2 X 0.25 RH4 P 32 6 3
200354 M1.2 X 0.25 RH4 B 32 6 3
200355 M1.2 X 0.25 RH5 B 32 6 3
201355 M1.2 X 0.25 RH5 P 32 6 3
200423 M1.4 X 0.3 RH3 B 34 6.5 3
201423 M1.4 X 0.3 RH3 P 34 6.5 3
200424 M1.4 X 0.3 RH4 B 34 6.5 3
201424 M1.4 X 0.3 RH4 P 34 6.5 3
200425 M1.4 X 0.3 RH5 B 34 6.5 3
201425 M1.4 X 0.3 RH5 P 34 6.5 3
200493 M1.6 X 0.35 RH3 B 36 7 3
201493 M1.6 X 0.35 RH3 P 36 7 3
200494 M1.6 X 0.35 RH4 B 36 7 3
201494 M1.6 X 0.35 RH4 P 36 7 3
200495 M1.6 X 0.35 RH5 B 36 7 3
201495 M1.6 X 0.35 RH5 P 36 7 3
200533 M1.7 X 0.35 RH3 B 36 10 3
201533 M1.7 X 0.35 RH3 P 36 10 3
200534 M1.7 X 0.35 RH4 B 36 10 3
201534 M1.7 X 0.35 RH4 P 36 10 3
200535 M1.7 X 0.35 RH5 B 36 10 3
201535 M1.7 X 0.35 RH5 P 36 10 3
128901 M2 X 0.4 RH3 P 40 11 3
128902 M2 X 0.4 RH3 B 40 11 3
128903 M2 X 0.4 RH5 P 40 11 3
128904 M2 X 0.4 RH5 B 40 11 3
128907 M2.3 X 0.4 RH5 P 42 11 3
128908 M2.3 X 0.4 RH5 B 42 11 3
128909 M2.5 X 0.45 RH6 P 44 15 3
128910 M2.5 X 0.45 RH6 B 44 15 3
128911 M2.6 X 0.45 RH6 P 44 15 3
128912 M2.6 X 0.45 RH6 B 44 15 3
128915 M3 X 0.5 RH4 P 46 18 4
128916 M3 X 0.5 RH4 B 46 18 4
128913 M3 X 0.5 RH6 P 46 18 4
128914 M3 X 0.5 RH6 B 46 18 4
128917 M3.5 X 0.6 RH6 P 48 15 4
128918 M3.5 X 0.6 RH6 B 48 15 4
128921 M4 X 0.7 RH5 P 52 20 5
128922 M4 X 0.7 RH5 B 52 20 5
128919 M4 X 0.7 RH7 P 52 20 5
128920 M4 X 0.7 RH7 B 52 20 5
128927 M5 X 0.8 RH5 P 60 22 5.5
128928 M5 X 0.8 RH5 B 60 22 5.5
128925 M5 X 0.8 RH8 P 60 22 5.5
128926 M5 X 0.8 RH8 B 60 22 5.5
128931 M6 X 1 RH5 P 62 24 6
128932 M6 X 1 RH5 B 62 24 6
128929 M6 X 1 RH8 P 62 24 6
128930 M6 X 1 RH8 B 62 24 6
All table dimensions in mm.


U-Type thread
RG NO. Thread Size TAP Limit Chamfer (lc) Total Length (A) Thread Length (B) Shank Dia. (C)
202033 NO.1 - 64 UNC RH3 B 36 11 3
203033 NO.1 - 64 UNC RH3 P 36 11 3
202034 NO.1 - 64 UNC RH4 B 36 11 3
203034 NO.1 - 64 UNC RH4 P 36 11 3
202035 NO.1 - 64 UNC RH5 B 36 11 3
203035 NO.1 - 64 UNC RH5 P 36 11 3
202043 NO.1 - 72 UNF RH3 B 36 11 3
203043 NO.1 - 72 UNF RH3 P 36 11 3
202044 NO.1 - 72 UNF RH4 B 36 11 3
203044 NO.1 - 72 UNF RH4 P 36 11 3
202045 NO.1 - 72 UNF RH5 B 36 11 3
203045 NO.1 - 72 UNF RH5 P 36 11 3
129610 NO.2 - 56 UNC RH5 B 42 11 3
129615 NO.4 - 40 UNC RH4 P 44 12 3
129616 NO.4 - 40 UNC RH4 B 44 12 3
129617 NO.4 - 40 UNC RH5 P 44 12 3
129618 NO.4 - 40 UNC RH5 B 44 12 3
129621 NO.6 - 32 UNC RH4 P 48 18 4
129622 NO.6 - 32 UNC RH4 B 48 18 4
129625 NO.6 - 32 UNC RH6 P 48 18 4
129626 NO.6 - 32 UNC RH6 B 48 18 4
129629 NO.8 - 32 UNC RH4 P 52 20 5
129630 NO.8 - 32 UNC RH4 B 52 20 5
129633 NO.8 - 32 UNC RH6 P 52 20 5
129634 NO.8 - 32 UNC RH6 B 52 20 5
129637 NO.10 - 24 UNC RH5 P 60 22 5.5
129638 NO.10 - 24 UNC RH5 B 60 22 5.5
129641 NO.10 - 24 UNC RH7 P 60 22 5.5
129642 NO.10 - 24 UNC RH7 B 60 22 5.5
129645 NO.10 - 32 UNF RH4 P 60 22 5.5
129646 NO.10 - 32 UNF RH4 B 60 22 5.5
129643 NO.10 - 32 UNF RH7 P 60 22 5.5
129644 NO.10 - 32 UNF RH7 B 60 22 5.5
129651 1/4 - 20 UNC RH5 P 62 24 6
129652 1/4 - 20 UNC RH5 B 62 24 6
129655 1/4 - 20 UNC RH8 P 62 24 6
129656 1/4 - 20 UNC RH8 B 62 24 6
129653 1/4 - 28 UNF RH5 P 62 24 6
129654 1/4 - 28 UNF RH5 B 62 24 6
129657 1/4 - 28 UNF RH8 P 62 24 6
129658 1/4 - 28 UNF RH8 B 62 24 6
All table dimensions in mm.



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