MECCANICA ARNES s.r.l.
Via Prati Vecchi 21/H

 z.i. Corte Tegge 42025 CAVRIAGO  ( RE ) ITALY

Tel.   + 0 39 0522 370945 
 Fax  + 0 39 0522 374886
Tapping instruments, Chuks
 Accessories and instruments for tool machines

MECCANICA ARNES
WISES.


info@meccanicarnes.com
PRECAFE.
Tapping is a mechanical working present in every machine shops and it is performed by males and dies. For their characteristic, these tools need to be bound to the tool machine with particular instruments. New tecnologies permit to construct tools with different composition of materials and with new cutting edge profiles.
The MECCANICA ARNES is specialized into production and sale for tapping instruments since 20 years; the company took advantage from the experience acuired into the area develop, test, patent and offer to market new products, that can utilize now tools improved characteristics completly.
MALES USERS ADVISE.
Prehole execution: the prehole diameter needs to be controlled carefully; you can fix it substracting the male pitch from noun diameter.
Example: M10 1,5 pitch, the prehole has a 8,5 diameter.
Remember the 150 thread regulation, that gives more important tollerances, then the thread needs drillings slightly bigger than the old profile drillings. If there are bild holes, don't forget to drill a hole as muche deeper as possible, so you can assure to the male a normal entry and penetration lenght tollerance. Performing too small holes, you can offem have problems risking obstruction by chips and male breaking.
 MALE ASSEMBLING.
Everytime it is posssible, we revue advise you use a threader with a supporter screw, because it reduces hole axial strains to the utmost on the male.
If you have not thi instruments, it is better using a tapping machine, that prevents the axial strain to the utmost. Otherwise, if the male is too taut or too pushed, you risk that optained threads are deformed, with stress of the male tool and it breack. Arnes instruments are planed, designed, tested and patented to eliminate this problems. They can assure a better thread quality and more life of male.
 CUTTING SPEED.
Cutting speeds are adjustable according to unthread materials, lubrications, type, hole dept, the machine utilized, ecc.
The optimal speed permits a good discharge of chips and a sharp-edged profile cooling. It is difficult giving precise informations.
 REFLECTIONS.
How we mentioned before, new male tools with their structures, permit remarkable cutting speed and this consaints to obtain better workings with reduced phases, but a continual phases reduction of tool machines causes bigger strains.
Think about chuck motor and instruments in your machines. Think also to the electrical energy waste by starting points, that motors sustain with continual starts, unforeseen stops and quick reversals. Think that good percentage of male breacks are caused by imperfect synchronizer of machines reversal. MECCANICA ARNES, with our carefully planed new products (various registred patents prove everything), improved these problems, assuring a very good working quality, a good phases reduction and a very good our products reliability to the client, without stressing too much tool machines.

Our chucks are constructed with alloyed steel and they undergo a thermal processing of temper cementing and tempering that assures a strenght of 55-58 HRC.
The finish of the cone is performed by DIN 7178 regulation and it responds to the AT3 tolerance range. The assured concentricity between cone and the seat of tool is 5 micron for pincers holder chucks and 10-20 micron for other kinds according to the lenght and the diameter.
We can provide ISO 30 and 40 chucks balanced electronically to requested tolerance range, to satisfy needs that caused high speed in mechanical workings on tool machines.
Mereover, we can construct special chucks by request. To prevent misunderstandings, we advise you to use our code numbers at an order stage.
Balanced chucks take a differentiate processing course compared to the traditional chucks, because, after cementing and hardening processing, the are subjected to a double extension tratament in controlled atmosphere to obtain more stability in the chuck. Then, there is a cone griding with electronical control of the conicity, that allows AT3 tollerance achievement.
Having high precision, the balanced chuck assure a conectivity tollerance between cone, chucks and pincer holder seat less than 5 micron.
Chucks are balanced dinamically with electronical equalizer at 12.000 REV/MIN to G2,5 tolerance range, that admits imbalance readings (voiced in g/mm) very small to live for roating mass.
High precision and balancing consent more precision in processing and more life for the tool. For a best use of this kind of chuck, it is advised ER DIN 6499 extra-precise pincers utilization.
WE NOTIFY THAT INFORMATIONS REPORTED COULD BE CHANGED ANY MOMENT WITHOUT BEING OBLIGED TO NOTICE.

DRILL FOR TAPPING

FILETTATURA METRICA ISO A PASSO GROSSO
Tapping Internat shot
 MAX
mm		 Sting Shot
mm
M Step
mm
1,6 0,35 1,321 1,25
1,8 0,35 1,521 1,45
2 0,4 1,679 1,6
2,2 0,45 1,838 1,75
2,5 0,45 2,138 2,05
3 0,5 2,599 2,5
3,5 0,6 3,010 2,9
4 0,7 3,422 3,3
4,5 0,75 3,878 3,7
5 0,8 4,334 4,2
6 1 5,153 5
7 1 6,153 6
8 1,25 6,912 6,8
9 1,25 7,912 7,8
10 1,5 8,676 8,5
11 1,5 9,676 9,5
12 1,75 10,441 10,2
14 2 12,210 12
16 2 14,210 14
18 2,5 15,744 15,5
20 2,5 17,744 17,5
22 2,5 19,744 19,5
24 3 21,252 21
27 3 24,252 24
30 3,5 26,771 26,5
33 3,5 29,771 29,5
36 4 32,270 32
39 4 35,270 35
42 4,5 37,799 37,5
45 4,5 40,799 40,5
48 5 43,297 43
52 5 47,297 47

FILETTATURA METRICA ISO A PASSO FINE
Tapping Internat shot
 Max.
mm		 Sting Shot
mm
mm
3 x 0,35 2,721 2,65
4 x 0,5 3,599 3,5
5 x 0,5 4,599 4,5
6 x 0,75 5,378 5,2
7 x 0,75 6,378 6,2
8 x 0,75 7,378 7,2
8 x 1 7,153 7
9 x 1 8,153 8
10 x 0,75 9,378 9,2
10 x 1 9,153 9
10 x 1,25 8,912 8,8
11 x 1 10,153 10
12 x 1 11,153 11
12 x 1,25 10,912 10,8
12 x 1,5 10,676 10,5
14 x 1 13,153 13
14 x  1,25 12,912 12,8
14 x 1,5 12,676 12,5
15 x 1 14,153 14
15 x 1,5 13,676 13,5
16 x 1 15,153 15
16 x 1,5 14,676 14,5
18 x 1 17,153 17
18 x 1,5 16,676 16,5
18 x 2 16,210 16
20 x 1 19,153 19
20 x 1,5 18,676 18,5
20 x 2 18,210 18
22 x 1 21,153 21
22 x 1,5 20,676 20,5
22 x 2 20,210 20
24 x 1 23,153 23
24 x 1,5 22,676 22,5
24 x 2 22,210 22
25 x 1 23,153 24
25 x 1,5 22,676 23,5
26 x 1,5 24,676 24,5
27 x 1,5 25,676 25,5
27 x 2 25,210 25
28 x 1,5 26,676 26,5
30 x 1,5 28,676 28,5
30 x 2 28,210 28
32 x 1,5 30,676 30,5
33 x 2 31,210 31
35 x 1,5 33,676 33,5
36 x 1,5 34,676 34,5
36 x 2 34,210 34
36 x 3 33,252 33
38 x 1,5 36,676 36,5
39 x 3 36,252 36
40 x 1,5 38,676 38,5
42 x 1,5 40,676 40,5
45 x 1,5 43,676 43,5
50 x 1,5 48,676 48,5
 

FILETTATURA A GAS (BSP)
Tapping Internat shot
 MAX
mm		 Sting Shot
mm
Gas Fillets for thumb
1/8 28 8,848 8,8
1/4 19 11,890 11,8
3/8 19 13,395 15,25
1/2 14 19,172 19
5/8 14 21,128 21
3/4 14 24,658 24,5
7/8 14 28,418 28,25
1 11 30,931 30,75
1 1/4 11 39,592 39,25
1 1/2 11 45,485 45,25
1 3/4 11 51,428 51,3
2 11 57,296 57
 
FILETTATURA A GAS CONICA
Tapping
BSPT		 Fillets for thumb Fillets for thumb
 mm
(For cylindrical hole)
1/8 28 8,3
1/4 19 11
3/8 19 14,5
1/2 14 18,1
3/4 14 23,5
1 11 29,6
1 /14 11 38,1
1 1/2 11 44
2 11 55,6

FILETTATURA AMERICANA A PASSO GROSSO
Tapping Internat shot
Max mm		 Sting
UNC Shot mm
Nr. 4 - 40 2,385 2,25
Nr. 5 - 40 2,697 2,6
Nr. 6 - 32 2,896 2,75
Nr. 8 - 32 3,531 3,4
Nr. 10 - 24 3,962 3,8
Nr. 10 - 24 4,957 4,5
1/4 - 20 5,268 5,1
5/16 - 18 6,734 6,5
3/8 - 16 8,164 8
7/16 - 14 9,550 9,4
1/2 - 13 11,013 10,75
9/16 - 12 12,456 12,2
5/8 - 11 13,868 13,6
3/4 - 10 16,833 16,5
7/8 - 9 19,748 19,5
1 - 8 22,598 22,25
1 1/8 - 7 25,349 25
1 1/4 - 7 28,524 28,25
1 3/8 - 6 31,120 30,75
1 1/2 - 6 34,295 34
1 3/4 - 5 39,814 39,5
2 - 4 1/2 45,598 45

 

FILETTATURA AMERICANA A PASSO FINE
Tapping Internat shot
Max mm		 Sting
UNF Shot mm
Nr. 4 - 48 2,459 2,35
Nr. 5 - 44 2,741 2,65
Nr. 6 - 40 3,023 2,9
Nr. 8 - 36 3,607 3,5
Nr. 10 - 32 4,166 4,1
Nr. 10 - 28 4,724 4,6
1/4 - 28 5,580 5,5
5/16 - 24 7,038 6,9
3/8 - 24 8,626 8,5
7/16 - 20 10,030 9,9
1/2 - 20 11,618 10,5
9/16 - 18 13,084 12,9
5/8 - 18 14,671 14,5
3/4 - 16 17,689 17,5
7/8 - 14 20,663 20,5
1 - 12 23,569 23,5
1 1/8 - 12 26,744 26,5
1 1/4 - 12 29,919 29,75
1 3/8 - 12 33,094 33
1 1/2 - 12 36,296 36

FILETTATURA CONICA AMERICANA
NPT Tapping Fillets for thumb Fillets for thumb
 mm
(For cylindrical hole)
1/8 27 8,4
1/4 18 11,1
3/8 18 14,3
1/2 14 17,9
3/4 14 23
1 11 1/2 29
1 /14 11 1/2 37,7
1 1/2 11 1/2 44
2 11 1/2 56

FILETTATURA WHITWORTH W
Tapping Internat shot
Max mm		 Shot
W Fillets for thumb Sting
mm
3/32 48 1,910 1,85
1/8 40 2,590 2,55
5/32 32 3,211 3,2
3/16 24 3,744 3,7
7/32 24 4,538 4,5
1/4 20 5,224 5,1
5/16 18 6,661 6,5
3/8 16 8,052 7,9
7/16 14 9,379 9,2
1/2 12 10,610 10,5
9/16 12 12,176 12
5/8 11 13,598 13,5
3/4 10 16,538 16,25
7/8 9 19,411 19,25
1 8 22,185 21,75
1 1/8 7 24,879 24,75
1 1/4 7 28,054 27,75
1 3/8 6 30,555 30,5
1 1/2 6 30,730 33,5
1 5/8 5 35,921 35,5
1 3/4 5 39,096 39
1 7/8 4 1/2 41,648 41,5
2 4 1/2 44,823 44,5

TAP SHANK DIMENSIONS TO DIN

Dimension
Ø x □		 DIN 352 DIN 353 DIN 371 DIN 374 DIN 376 DIN 2182 DIN 2183
2,5 X 2,1 M 1 - M 1 - M 3,5 1/16" -
2,5 X 2,1 M 1,1 - M 1,1 M 3,5 - - -
2,5 X 2,1 M 1,2 - M 1,2 - - - -
2,5 X 2,1 M 1,4 - M 1,4 - - - -
2,5 X 2,1 M 1,6 - M 1,6 - - - -
2,5 X 2,1 M 1,8 - M 1,8 - - - -
2,8 X 2,1 M 2 - M 2 M 4 M 4 3/32" 5/32"
2,8 X 2,1 M 2,2 - M 2,2 - - - -
2,8 X 2,1 M 2,5 - M 2,5 - - - -
3,5 X 2,7 M 3 - M 3 M 5 M 5 1/8" -
4 X 3 M 3,5 - M 3,5 - - - -
4,5 X 3,4 M 4 - M 4 M 6 M 6 5/32" 1/4"
6 X 4,9 M 5 - M 5 - - 7/32" -
6 X 4,9 M 6 - M 6 - - - -
6 X 4,9 M 8 - - M 8 M 8 - -
7 X 5,5 M 10 G 1/8" - M10 M 10 1/4" 3/8"
8 X 6,2 - - M 8 - - 5/16" 7/16"
9 X 7 M 12 - - M 12 M 12 3/8" 1/2"
10 X 8 - - M 10 - - - -
11 X 9 M 14 G 1/4" - M 14 M 14 - 9/16"
12 X 9 M 16 G 3/8" - M 16 M 16 - 5/8"
14 X 11 M 18 - - M 18 M 18 - 11/16"
16 X 12 M 20 G 1/2" - M 20 M 20 - 13/16"
18 X 14,5 M 22 G 5/8" - M 22 M 22 - 7/8"
18 X 14,5 M 24 - - M 24 M 24 - 15/16"
20 X 16 M 27 G 3/4" - M 27 M 27 - 1"
22 X 18 M 30 G 7/8" - M 30 M 30 - 1.1/8"
25 X 20 M 33 G 1" - M 33 M 33 - 1.1/4"
28 X 22 M 36 G 1.1/8" - M 36 M 36 - 1.3/8"
32 X 24 M 39 G 1.1/4" - M 39 M 39 - 1.1/2"
32 X 24 M 42 - - M 42 M 42 - 1.5/8"
36 X 29 M 45 G 1.3/8" - M 45 M 45 - 1.3/4"
36 X 29 M 48 G 1.1/2" - M 48 M 48 - 1.7/8"
36 X 29 - G 1.3/4" - - - - -
36 X 29 - G 2" - - - - -
40 X 32 M 52 G 2.1/4" - M 52 M 52 - 2"
45 X 35 M 56 G 2.1/2" - - M 56 - 2.1/4"
45 X 35 M 60 - - - M 60 - -
50 X 39 M 64 G 2.3/4" - - M 64 - 2.1/2"
50 X 39 - G 3" - - - - -
56 X 44 M 68 G 3.1/4" - - M 68 - 2.3/4"
56 X 44 - - - - - - 3"

TAP SHANK DIMENSIONS TO ISO

Dimension
 Ø x □		 ISO 529 - 1975

M
 

*

UNC
 

*

UNF
 

*

BSW
 

*
BSF

BA
 

*
2.24 x 1,8 M 3 - Nr. 5-40 - Nr. 5-44 - 1/8"-40 - - - Nr. 5 -
2.5 x 2,0 M 3.5 M 2 Nr. 6-32 Nr. 1-64 Nr. 6-40 Nr. 0-80 - - - - - Nr. 11
2.5 x 2,0 - - - - - Nr. 1-72 - - - - - Nr. 10
2.5 x 2,0 - - - - - - - - - - - Nr. 9
2.80 x 2.24 - M 2.2 - Nr. 2-56 - Nr. 2-64 - - - - - Nr. 8
2.80 x 2.24 - M 2.5 - Nr. 3-48 - Nr. 3-56 - - - - - Nr. 7
2.80 x 2.24 - - - - - - - - - - - Nr. 6
3.15 x 2.5 M 4 M 3 - Nr. 4-40 - Nr. 4-48 - - - - - Nr. 5
3.15 x 2.5 - - Nr. 8-32 Nr. 5-40 Nr. 8-36 Nr. 5-44 - - - - Nr. 3 -
3.55 x 2.8 M 4.5 M 3.5 Nr. 10-24 Nr. 6-32 Nr. 10-32 Nr. 6-40 3/16"24 - 3/16"-32 - Nr. 2 Nr. 4
4 x 3.15 M 5 M 4 Nr. 12-24 - Nr. 12-28 - - - 7/32"-28 - Nr. 1 -
4.5 x 3.55 M 6 - 1/4" - 30 Nr. 8-32 1/4"-28 Nr. 3-36 1/4"-20 - 1/4"-26 - Nr. 0 Nr. 3
5 x 4 - M 5 - Nr. 10-24 - Nr. 10-32 - 3/16"-24 - 3/16"-32 - Nr. 2
5.6 x 4.5 - - - Nr. 12-24 - Nr. 12-28 - - 9/32"-36 7/32"-28 - Nr. 1
6.3 x 5 M 8 M 6 5/16" - 18 1/4"-20 5/16"-24 1/4"-28 5/16"-18 1/4"-20 5/16"-22 1/4"-26 - Nr. 0
7.1 x 5.6 - - 3/8" - 16 - 3/8"-24 - 3/8"-16 - 3/8"-20 9/32"36 - -
8 x 6.1 M 10 M 8 7/16" - 14 5/16"-18 7/16"-20 - 7/16"-14 5/16"-18 7/16"-18 5/16"-22 - -
9 x 7.1 M 12 - 1/2" - 13 - 1/2"-20 - 1/2"-12 - 1/2"-12 - - -
10 x 8 - M 10 - 3/8"-16 - 3/8"-24 - 3/8"-16 - 3/8"20 - -
11.2 x 9 M 14 - 9/16"-12 - 9/16"-18 - 9/16"-12 - 9/16"-16 - - -
12.5 x 10 M 16 - 5/8"-11 - 5/8"-18 - 5/8"-11 - 3/8"-14 - - -
14 x 11.2 M 18 - 3/4"-10 - 3/4"-18 - 11/16"-11 - 11/16"-14 - - -
14 x 11.2 M 20 - - - - - 3/4"-10 - 3/4"-12 - - -
16 x 12.5 M 22 - 7/8"-9 - 7/8"-14 - 7/8"-9 - 7/8"-11 - - -
18 x 14 M 24 - 1"-8 - 1"-12 - 1"-8 - 1"-10 - - -
20 x 16 M 27 - 1.1/8"-7 - 1.1/8"-12 - 1.1/8"-7 - 1.1/8"-9 - - -
20 x 16 M 30 - - - - - - - - - - -
22.4 x 18 M 33 - 1.1/4"-7 - 1.1/4"-12 - 1.1/4"-7 - 1.1/4"-9 - - -
25 x 20 M 36 - 1.3/8"-6 - 1.3/8"-12 - - - 1.3/8"-8 - - -
28 x 22.4 M 39 - 1.1/2"-6 - 1.1/2"-12 - 1.1/2"-6 - 1.1/2"-8 - - -
28 x 22.4 M 42 - - - - - - - 1.5/8"-8 - - -
31.5 x 25 M 45 - 1.3/4"-5 - - - 1.3/4"-5 - 1.3/4"-7 - - -
31.5 x 25 M 48 - - - - - - - - - - -
35.5 x 28 M 52 - 2"-4.1/2 - - - 2"-4.1/2 - 2"-7 - - -
35.5 x 28 M 56 - - - - - - - - - - -
40 x 31.5 M 60 - 2.1/4"-4.1/2 - - - 2.1/4"-4 - 2.1/4"-6 - - -
40 x 31.5 M 64 - 2.1/2"-4 - - - 2.1/2"-4 - 2.1/2"-6 - - -
45 x 35.5 M 68 - 2.3/4"-4 - - - 2.3/4"-3.1/2 - 2.3/4"-6 - - -
50 x 40 - - 3"-4 - - - 3"-3.1/2 - 3"-3.1/5 - - -
50 x 40 - - 3.1/4"-4 - - - 3.1/4"-3.1/4 - 3.1/4"-5 - - -
50 x 40 - - 3.1/2"-4 - - - 3.1/2"-3.1/4 - 3.1/2"-4 - - -
58 x 45 - - 3.3/4"-4 - - - 3.3/4"-3 - 3.3/4"-4.1/2 - - -
58 x 45 - - 4"-4 - - - 4"-3 - 4"-4.1/2 - - -

 

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