Reference
Section
333332 Amada Fujinomiya EML Production
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335
Contents
Reference
Amada Reference Section
Amada have compiled some useful data which may assist engineers in the daily business of
sheet metal design and production.
The information and data contained within this reference section is for guidance purposes only.
Amada cannot accept any responsibility for typographical errors or mistakes contained herein.
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334 Amada Vacuum Dies
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Page
General
SI Units of Measurement 336
Mechanical Properties 336
Hardness Conversions 337
Wire Gauge Conversion 338
Material Strengths 338
Sheets / Tonne 339
Standard Conversions 340
Calculation of Volume 341
Calculation of Area and Centre
of Gravity 342
Tapping: Drill Sizes 344
Page
Press Brake
Air Bending Tonnage Calculation 345
Air Bending Tonnage Chart: Mild Steel 346
Air Bending Tonnage Chart:
Stainless Steel 347
Hemming Tonnages 348
Bend Allowance - 90˚: Mild Steel 349
Bend Allowance - 90˚: Stainless Steel 350
Bend Allowance - 90˚: Aluminium 350
Punch Press
Tonnage Calculation 351
Minimum Hole Diameter 351
Burring Hole Reference Chart 352
Countersink Hole Reference Chart 352
Correct Tool Heights 353
Die Clearances 353
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Hardness
ConversionsThe table below shows the approximate hardness equivalent according to
Rockwell Hardness.
Rockwell Hardness CVickers Hardness
Brinell Hardness -Shore Hardness
Scale (3) Ball 10mm Dia’ / Load: 3,000kgf
(HRC) (HV)Standard Ball Tungsten Carbide
(HS)(HB) Ball (HB)
68 940 - - 97
67 900 - - 95
66 865 - - 92
65 832 - 739 91
64 800 - 722 88
63 772 - 705 87
62 746 - 688 85
61 720 - 670 83
60 697 - 654 81
59 674 - 634 80
58 653 - 615 78
57 633 - 595 76
56 613 - 577 75
55 595 - 560 74
54 577 - 543 72
53 560 - 525 71
52 544 500 512 69
51 528 487 496 68
50 513 475 481 67
49 498 464 469 66
48 484 451 455 64
47 471 442 443 63
46 458 432 432 62
45 446 421 421 60
44 434 409 409 58
43 423 400 400 57
42 412 390 390 56
41 402 381 381 55
40 392 371 371 54
39 382 362 362 52
38 372 353 353 51
37 363 344 344 50
36 354 336 336 49
35 345 327 327 48
34 336 319 319 47
33 327 311 311 46
32 318 301 301 44
31 310 294 294 43
30 302 286 286 42
29 294 279 279 41
28 286 271 271 41
27 279 264 264 40
26 272 258 258 38
25 266 253 253 38
24 260 247 247 37
23 254 243 243 36
22 248 237 237 35
21 243 231 231 35
20 238 226 226 34
General
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SI Units
of Measurement
Mechanical Properties
SI Unit: the generic term used to describe base, supplementary and derived units of
measurement according to the International System of Units.
Toughness: the ability of the metal to withstand shock loading.
Hardness: the ability of the metal to withstand wear.
Ductility: the ability of the metal to withstand forming without fracture.
Malleability: the ability of the metal to withstand compression loads without fracture.
Tensile Strength: the resistance capacity of the metal to withstand Tension Loads.
=Load
Cross Sectional Area
Shear Strength: the resistance capacity of the metal to withstand Shear Loads.
=Load
Cross Sectional Area
Volume Unit Sign
Length Metre m
Mass Kilogram kg
Time Second s
Electric Current Ampere A
Area Metre Square m2
Volume Metre Cubic m2
Velocity Metre/Second m/s
Acceleration Metre/Second2 m/s2
DensityKilogram / Cubic
Kg/m3
Metre
FrequencyHertz Hz
Force Newton N
Pressure, Stress Pascal Pa
Energy Joule J
Work RateWatt W
Electromotive
Force Voltage V
Electric
ResistanceOhm Ω
General
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Sheet / TonneThe table below shows the approximate
amount of sheets required per Tonne.
0.70 58 57 170
0.80 51 50 149
0.90 45 44 132
1.00 41 40 119
1.20 34 33 99
1.25 33 32 95
1.50 27 26 79
1.60 26 25 74
2500 1250 2.00 20 20 59
2.50 17 16 47
3.00 14 13 41
4.00 10 10 30
5.00 8 8 24
6.00 7 6 20
8.00 5 5 15
10.00 4 4 12
12.50 3 3 9
0.90 32 30 92
1.00 29 27 83
1.20 24 23 69
1.25 23 22 66
1.50 19 18 52
1.60 18 17 513000 1500
2.00 15 13 41
2.50 12 11 33
3.00 10 9 27
4.00 7 7 20
5.00 6 5 16
6.00 5 4 13
Length Width Material Thickness Sheets/Tonne Sheets/Tonne Sheets/Tonne
(mm) (mm) (mm) (approx) (approx) (approx)
0.70 91 89 266
0.80 80 78 232
0.90 71 69 208
1.00 64 62 186
1.20 53 52 155
1.25 51 50 149
1.50 43 41 125
1.60 40 39 116
2000 1000 2.00 32 31 93
2.50 26 25 74
3.00 21 20 62
4.00 16 15 46
5.00 13 12 37
6.00 11 10 31
8.00 8 7 23
10.00 7 6 18
12.50 5 5 15
Mild Steel Stainless Steel Aluminium
General
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Wire Gauge
Conversion
Material Strengths
Imperial WireMaterial
Imperial WireMaterial
Imperial WireMaterial
Imperial WireMaterial
GaugeThickness
GaugeThickness
GaugeThickness
GaugeThickness
(mm) (mm) (mm) (mm)
1 7.620 11 2.946 21 0.813 31 0.295
2 7.010 12 2.642 22 0.711 32 0.274
3 6.401 13 2.337 23 0.610 33 0.254
4 5.893 14 2.032 24 0.559 34 0.234
5 5.385 15 1.829 25 0.508 35 0.213
6 4.877 16 1.626 26 0.457 36 0.193
7 4.470 17 1.422 27 0.417 37 0.173
8 4.064 18 1.219 28 0.376 38 0.152
9 3.658 19 1.016 29 0.345 39 0.132
10 3.251 20 0.914 30 0.315 40 0.122
Material TypeTensile Strength - kg/mm2
Soft Hard
Tin 4-5 -
Aluminium 20 40
Duralumin 26 48
Zinc 15 25
Copper 22 - 28 30 - 40
Brass (70 - 30 ) 33 53
Brass (60 - 40 ) 38 49
Bronze 40 - 50 50 - 75
Nickel Silver 35 - 45 55 - 70
Cold Rolled Iron Sheet 32 - 38 -
Steel - 0.1%C 32 40
Steel - 0.2%C - (Typical Mild Steel) 40 50
Steel - 0.3%C 45 60
Steel - 0.4%C 56 72
Steel - 0.6%C 72 90
Steel - 0.8%C 90 110
Steel - 1.0%C 100 130
Silicon Steel Sheet 55 65
Stainless Steel Sheet 65 - 70 -
Nickel 44 - 50 57 - 63
The table below shows conversions for:
Standard Wire Gauge (SWG) - Metric (mm)
The table below shows the tensile strength (soft - hard) for a range of materials.
General
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Calculation
of VolumeThe tables below show the calculation required to
find the cubic volume of various solids.
Truncated Cylinder Volume (v)
v = π d2 h4
= π d2 h1 + h2
4 2
Pyramid Volume (v)
v = h A = h arn3 6
A = Area of Base
r = Radius of inscribed circle
a = Length of a side of regular
polygon
n = Number of sides
Circular Cone Volume (v)
v = π r2 h3
= 1.0472 r2 h
Sphere Volume (v)
v = 4 π r3 = 4.1888 r3
3
= π d3 = 0.5236 d3
6
[ ]
General
d
h 1
h 2
h
a
h
h
r
D
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Standard Conversions
Heat Energy
Imperial Factor Metric
British Thermal Unit 1054.8 Joules
Fuel Consumption
Imperial Factor Metric
Gallons/Mile 2.825 Litres/Kilometre
Miles/Gallon 0.354 Kilometres/Litre
Pressure / Stress
Imperial Factor Metric
Pounds/Square Inch 0.06804 Bar
Pounds/Square Inch 0.000703 Kilogram/Metre²
Force
Imperial Factor Metric
Pounds Force 0.2248 Newton
Pounds Force 2.2046 Kilograms Force
Volume
Imperial Factor Metric
Cubic Yards 0.7646 Cubic Metres
Cubic Feet 0.0283 Cubic Metres
Cubic Inches 16.3871 Cubic Centimetres
Velocity
Imperial Factor Metric
Miles/Hour 1.6093 Kilometres/Hour
Feet/Second 0.3048 Metres/Second
Feet/Minute 0.0051 Metres/Second
Capacity
Imperial Factor Metric
Gallons 4.546 Litres
US Gallons 3.785 Litres
Quarts 1.137 Litres
Pints 0.568 Litres
Gills 0.142 Litres
Length
Imperial Factor Metric
Miles 1.6093 Kilometres
Yards 0.9144 Metres
Feet 0.3048 Metres
Inches 25.4 Millimetres
Inches 2.54 Centimetres
Weight
Imperial Factor Metric
Tons 1016.05 Kilograms
Tons 1.016 Tonnes
Hundred Weight 50.8023 Kilograms
Quarters 12.7006 Kilograms
Stones 6.3503 Kilograms
Pounds 0.4536 Kilograms
Ounces 28.3495 Grams
Area
Imperial Factor Metric
Square Miles 2.59 Square Kilometres
Square Miles 258.999 Hectares
Acres 4046.86 Square Metres
Acres 0.4047 Hectares
Square Yards 0.8361 Square Metres
Square Feet 0.0929 Square Metres
Square Feet 929.03 Square Centimetres
Square Inches 645.16 Square Millimetres
Square Inches 6.4516 Square Centimetres
To convert to metric: multiply by the factor shown.
To convert to imperial: divide by the factor shown.
Note: Some conversions are approximate.
General
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Calculation of
Area and Centre of GravityThe table below show the calculation required to
find the area and centre of gravity of various sections.
Section Sectional Area (A)Distance of
Gravitational Centre (e)
2.828 r2 0.924 r2
b = a
1 + 2
0.8284 a2
= 0.4142 a
π r2 = π d2 d4 2
r2 (1 - π ) e1 = 0.2234 r2
e2 = 0.7766 r
= 0.2146 r2
πab a
π x r2 e1 = 0.4244 r
2
e2 = 0.5756 r
π x r2 e1 = 0.4244 r
4
e2 = 0.5756 r
General
e
r
a
e
b b
2 b 2
2 b 2
h
e
r
r
r
e 2
e 1
b
a
2r
r e 1
e 2
e 2
e 1
r
r
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Calculation of
Area and Centre of GravityThe table below show the calculation required to
find the area and centre of gravity of various sections.
Section Sectional Area (A)Distance of
Gravitational Centre (e)
bh h
2
h2 h
2
h2 h 2
2
bh 2 h2 3
(2b + b1) h 1 x 3b + 2b1 x h2 3 2b + b1
3 3 x r2 3 r = 0.866 r2 4
= 2.598 r2
3 3 x r2
r2
= 2.598 r2
General
b
e h
h
e h
h
e
h
b
h e
b 1
2 b
b
e h
b 1
2
r e
e
r
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Air Bending
Tonnage CalculationTo calculate the Tonnage required to perform air bending per 1 metre length, the following
information is required:
If t = material thickness
Typical Tensile Strength:
Mild Steel = 40kg/mm2
Stainless Steel = 60kg/mm2
Aluminium = 30kg/mm2
Formula:
Bend Force/metre = C x t2 x Material Tensile Strength
V - Width
Example
2.0mm Thick Stainless Steel
Die V - Width = 12mm
1.40 x 22 x 60 = 28 Tonnes/Metre
12
V - Width 5 x t 6 x t 8 x t 10 x t 12 x t 16 x t
Bend Factor (C) 1.45 1.40 1.33 1.28 1.24 1.20
Press Brake
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Tapping:
Drill SizesThe table below shows the British Standard tap sizes and
the drill size required for a cut thread.
The table below shows the British Standard tap sizes and
the drill size required for a roll thread.
Note: These sizes are calculated to provide 60 to 75 per cent of full thread.
The table below shows the American Standard tap sizes and
the drill size required.
M4 3.30
Nominal Size &Drill Size (mm)
Nominal Size &Drill Size (mm)
Thread Dia. Thread Dia.
M2 1.60 M5 4.20
M2.5 2.05 M6 5.00
M3 2.50 M8 6.80
M3.5 2.90 M10 8.50
M4 3.70
Nominal Size &Drill Size (mm)
Nominal Size &Drill Size (mm)
Thread Dia. Thread Dia.
M2 1.80 M5 4.60
M2.5 2.30 M6 5.60
M3 2.80 M8 7.40
M3.5 3.20 M10 9.30
Size of Screw No. of Threads/inch Drill Size (mm)
4 40 2.261
6 32 2.705
8 32 3.454
10 24 3.797
10 32 4.038
General
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Press Brake
Air Bending Tonnage Chart:
Stainless SteelHow to Read the Pressure Chart
If the material thickness and inner radius are known, the following
information can be obtained from the chart below:
1. Tonnage required to bend material of 1 metre length
2. V-width to be used
3. Minimum bend flange length
Material Thickness and V-Width
The distance across the die opening is known as the V-width. The appropriate V-width should
be selected in accordance with the thickness of material being bent. The table below shows the
optimum relationship between the material thickness and V-width, although in practice this
relationship is often determined by specific requirements, including flange lengths (b), the
components inner bend radius (ir) and the tonnage capacity of the machine and tooling.
Relationship of Material Thickness (t) and V-Width
4 6 7 8 10 12 14 16 18 20 25 32 40 50 63 80 100 125 160t
2.8 4 5 5.5 7 8.5 10 11 13.5 14 17.5 22 28 35 45 55 71 89 113mm
0.7 1 1.1 1.3 1.6 2 2.3 2.6 3 3.3 4 5 6.5 8 10 13 16 20 26
0.5 6 5
0.6 9 6 6 6
0.7 12 8 8 6 6
0.8 11 11 8 7
0.9 13 12 10 8 7
1 17 15 12 11 8
1.2 21 18 15 12 11 9
1.5 20 17 15 13 12
2 33 29 26 23 20 17
2.5 39 35 30 25 19
3 51 45 36 29 23
4 65 51 41 32 26
5 78 63 50 39 32
6 90 72 57 45 36
8 102 81 65 51
10 128 101 80 63
12 144 117 90
15 180 141
20 250
25
30
200 250 V
140 175 b
33 41 ir
F
83
114
208 167
315 255
360
t Material thickness
(tensile strength: 52 - 60kg/mm2)
F Tonnage per 1 metre
ir Inner bending radius
b Minimum flange length
V V-width
Material Thickness (t) mm 0.5 - 2.5 3.0 - 8.0 9.0 - 10.0 12.0 or more
V-Width 6 x t 8 x t 10 x t 12 x t
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Press Brake
Air Bending Tonnage Chart:
Mild SteelHow to Read the Pressure Chart
If the material thickness and inner radius are known, the following
information can be obtained from the chart below:
1. Tonnage required to bend material of 1 metre length
2. V-width to be used
3. Minimum bend flange length
Material Thickness and V-Width
The distance across the die opening is known as the V-width. The appropriate V-width should
be selected in accordance with the thickness of material being bent. The table below shows the
optimum relationship between the material thickness and V-width, although in practice this
relationship is often determined by specific requirements, including flange lengths (b), the
components inner bend radius (ir) and the tonnage capacity of the machine and tooling.
Relationship of Material Thickness (t) and V-Width
Material Thickness (t) mm 0.5 - 2.5 3.0 - 8.0 9.0 - 10.0 12.0 or more
V-Width 6 x t 8 x t 10 x t 12 x t
4 6 7 8 10 12 14 16 18 20 25 32 40 50 63 80 100 125 160t
2.8 4 5 5.5 7 8.5 10 11 13.5 14 17.5 22 28 35 45 55 71 89 113mm
0.7 1 1.1 1.3 1.6 2 2.3 2.6 3 3.3 4 5 6.5 8 10 13 16 20 26
0.5 4 3
0.6 6 4 4 4
0.8 7 7 5 4
1 11 10 8 7 6
1.2 14 12 10 8 7 6
1.4 15 13 11 10 9 8
1.6 17 15 13 11 10 9
2 22 19 17 15 13 11
2.3 25 23 19 17 15 12
2.6 28 25 22 18 14
3 34 30 24 19 15
3.2 34 27 22 17 14
3.5 33 26 20 16 13
4 43 34 27 21 17
4.5 44 34 27 21
5 52 42 33 26 21
6 60 48 38 30 24
7 52 41 33 26
9 67 54 43
10 85 67 53 42
12 96 78 60
16 136 107
19 150
22
25
30
200 250 V
140 175 b
33 41 ir
F
55
86
125 100
160 130
210 170
240
t Material thickness
(tensile strength: 45 - 50kg/mm2)
F Tonnage per 1 metre
ir Inner bending radius
b Minimum flange length
V V-width
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Bend
Allowance - 90°
The following tables show the elongation factor (f) of mild steel, stainless steel and Aluminium
during a 90° bend.
V = V - width (mm)
t = material thickness (mm)
f = bend allowances (mm)
Example 1 - Bending 1mm mild steel in a 6mm ‘V’ die
If (f) = Elongation factor
If (d) = Blank development size
d = (20 + 40) - 2f
d = 60 - (2 x 0.87)
d = 58.26mm
Mild Steel
20.0
40.0
1.0
Press Brake
V4 6 7 8 10 12 14 16 18 20 25 32t
0.5 0.47 0.55 0.59 0.63 0.70
0.6 0.54 0.62 0.65 0.69 0.77 0.85
0.7 0.60 0.68 0.72 0.76 0.83 0.91 0.99
0.8 0.67 0.74 0.78 0.82 0.90 0.97 1.05 1.13
1.0 0.80 0.87 0.91 0.95 1.03 1.10 1.18 1.26 1.33 1.41
1.2 1.00 1.04 1.08 1.15 1.23 1.31 1.38 1.46 1.54
1.5 1.19 1.23 1.27 1.35 1.42 1.50 1.58 1.65 1.73 1.92
1.6 1.42 1.47 1.57 1.49 1.76 1.86 1.96 2.05 2.29
2.0 1.59 1.67 1.74 1.82 1.90 1.97 2.05 2.24
2.3 1.65 1.71 1.77 1.84 1.90 1.97 2.03 2.19
2.5 1.99 2.07 2.14 2.22 2.29 2.37 2.56
2.6 2.13 2.21 2.28 2.30 2.44 2.63
3.0 2.39 2.46 2.54 2.62 2.69 2.88
3.2 2.51 2.59 2.67 2.74 2.82 3.01
2.63
2.51
2.41
2.83
2.90
3.15
3.28
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Hemming Tonnages
Hemming is a form of bending requiring higher amounts of tonnage than standard
Air Bending.
The tables below shows the tonnage required for hemming and seaming operations.
Bending Shape
Sheet Thickness
(mm)Required Tonnage C Required Tonnage 2t
0.6 15.0 3.0 35.0 1.2
0.8 20.0 3.0 50.0 1.6
1.0 25.0 3.5 60.0 2.0
1.2 26.0 3.5 80.0 2.4
1.5 38.0 3.5 95.0 3.0
2.0 50.0 5.5 130.0 4.0
2.5 90.0 6.5 180.0 5.0
3.0 100.0 8.0 210.0 6.0
4.0 140.0 11.3 280.0 8.0
Mild Steel
Stainless Steel
Bending Shape
Sheet Thickness
(mm)Required Tonnage C Required Tonnage 2t
0.6 9.0 3.0 23.0 1.2
0.8 12.0 3.0 32.0 1.6
1.0 15.0 3.5 40.0 2.0
1.2 17.0 3.5 50.0 2.4
1.6 24.0 3.5 63.0 3.2
2.0 30.0 5.5 80.0 4.0
2.6 55.0 6.5 90.0 5.2
3.2 70.0 8.0 100.0 6.4
4.5 105.0 11.3 200.0 9.0
Note: Required tonnage is given per 1 metre length.
Note: Required tonnage is given per 1 metre length.
Press Brake
c
2t
c
2t
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Tonnage
Calculation
Minimum Hole Diameter
The punching tonnage is calculated by using the following formula:
Length of the cut edge (mm) x Material Thickness (mm) x Tensile Strength (kg/mm2)
1000
Example 1
Rectangle 50 x 10 in 2.0mm Stainless Steel
Tonnage Required = (50 + 50 + 10 + 10) x (2.0) x (60)
1000
Tonnage Required = 14.4 Tonnes
Example 2
30mm Diameter in 1.5mm Mild Steel
Tonnage Required = (3.142 x 30) x (1.5) x (40)
1000
Tonnage Required = 5.7 Tonnes
As a general guideline, the following table shows the minimum diameter of a punched hole
with regards to material thickness.
t = Material Thickness
It is possible to punch smaller hits, please contact Tooling Hotline for assistance.
Material Type Minimum Hole Diameter
Mild Steel 1.0 x t
Aluminium 1.0 x t
Stainless Steel 2.0 x t
Punch Press
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Bend
Allowance - 90°V = V - Width (mm)
t = Material Thickness (mm)
f = bend allowances (mm)
Aluminium
Stainless Steel
Press Brake
V4 6 7 8 10 12 14 16 18 20 25 32t
0.5 0.52 0.63 0.69 0.75 0.86
0.6 0.58 0.69 0.75 0.80 0.92 1.03
0.7 0.64 0.75 0.81 0.86 0.98 1.09 1.20
0.8 0.70 0.81 0.87 0.92 1.04 1.15 1.26 1.37
1.0 0.82 0.94 0.99 1.05 1.17 1.29 1.40 1.52 1.64 1.75
1.2 1.05 1.10 1.16 1.27 1.38 1.50 1.61 1.72 1.83
1.5 1.23 1.28 1.34 1.45 1.56 1.67 1.79 1.90 2.01 2.29
1.6 1.34 1.40 1.51 1.62 1.73 1.85 1.96 2.07 2.35
2.0 1.64 1.74 1.85 1.96 2.07 2.18 2.28 2.55
2.3 1.81 1.93 2.04 2.15 2.26 2.37 2.49 2.77
2.5 2.04 2.16 2.27 2.38 2.49 2.60 2.88
2.6 2.22 2.33 2.44 2.55 2.66 2.94
3.0 2.45 2.56 2.68 2.79 2.90 3.18
3.2 2.57 2.68 2.80 2.91 3.02 3.30
2.74
2.93
3.16
3.28
3.34
3.57
3.69
V4 6 7 8 10 12 14 16 18 20 25 32t
0.5 0.40 0.44 0.47 0.49 0.54
0.6 0.46 0.50 0.53 0.55 0.60 0.65
0.7 0.52 0.56 0.59 0.61 0.66 0.71 0.76
0.8 0.58 0.62 0.65 0.67 0.72 0.77 0.82 0.87
1.0 0.69 0.74 0.77 0.80 0.85 0.90 0.95 1.00 1.06 1.11
1.2 0.86 0.89 0.91 0.96 1.01 1.06 1.11 1.15 1.20
1.5 1.04 1.07 1.09 1.14 1.19 1.24 1.29 1.33 1.38 1.50
1.6 1.13 1.15 1.20 1.25 1.30 1.35 1.39 1.44 1.56
2.0 1.40 1.45 1.49 1.54 1.58 1.63 1.67 1.79
2.3 1.57 1.62 1.67 1.72 1.76 1.81 1.86 1.98
2.5 1.74 1.79 1.83 1.88 1.93 1.98 2.10
2.6 1.85 1.89 1.94 1.99 2.04 2.16
3.0 2.09 2.13 2.18 2.23 2.28 2.40
3.2 2.20 2.25 2.30 2.35 2.40 2.52
1.73
1.94
2.15
2.27
2.33
2.57
2.69
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Correct Tool Heights
The table below shows the correct tool height for Standard and NEX tooling.
Die ClearancesThe table below shows the recommended die clearances for a range of materials and
thicknesses.
Notes:
i) The figures in the above chart are given as a range, for example 0.15 - 0.20mm.
For mechanical machines choose the smaller die clearance of the range.
For hydraulic machines choose the larger die clearance of the range.
ii) For Galvatite and Zintec materials, use Mild Steel as a guide.
iii) The figures above are a guideline only. Please refer to your Machine Operators Manual for more
specific details.
Tool StyleSetting Height Punch Body Only Die Only
Thick Thin Thick Thin Thick & Thin
“A” Stn Standard 207.5 139.7 207.0 139.2 30
“A” Stn NEX 208.0 - 207.0 - 30
“B” Stn Standard 207.5 139.7 207.0 139.2 30
“B” Stn NEX 208.0 - 207.0 - 30
“B” Stn Mod’ 2000 - 139.7 - 139.2 30
“C” Stn 208.0 - 96.0 - 30
“D” Stn 209.0 140.0 84.0 70.0 30
“D” Stn PR Type - 140.0 - 25.5 30
“E” Stn 210.0 - 85.0 - 30
Note:
i) The Punch setting height is the measurement taken from the top of the Punch Assembly head to the
bottom cutting edge of the punch body, not the bottom of the guide or stripper plate.
Material Mild StainlessAluminium Copper Brass
Thick Steel Steel
0.8mm 0.15 - 0.20mm 0.20 - 0.24mm 0.15 - 0.16mm 0.15 - 0.16mm 0.15 - 0.16mm
1.0mm 0.20 - 0.25mm 0.25 - 0.30mm 0.15 - 0.20mm 0.15 - 0.20mm 0.15 - 0.20mm
1.5mm 0.30 - 0.38mm 0.37 - 0.45mm 0.22 - 0.30mm 0.22 - 0.30mm 0.22 - 0.30mm
2.0mm 0.40 - 0.50mm 0.50 - 0.60mm 0.30 - 0.40mm 0.30 - 0.40mm 0.30 - 0.40mm
2.5mm 0.50 - 0.63mm 0.62 - 0.75mm 0.37 - 0.50mm 0.37 - 0.50mm 0.37 - 0.50mm
3.0mm 0.60 - 0.75mm 0.75 - 0.90mm 0.45 - 0.60mm 0.45 - 0.60mm 0.45 - 0.60mm
3.2mm 0.64 - 0.80mm 0.80 - 0.96mm 0.48 - 0.64mm 0.48 - 0.64mm 0.48 - 0.64mm
3.5mm 0.70 - 0.88mm 0.88 - 1.05mm 0.53 - 0.70mm 0.53 - 0.70mm 0.53 - 0.70mm
4.0mm 0.80 - 1.00mm 1.00 - 1.20mm 0.60 - 0.80mm 0.60 - 0.80mm 0.60 - 0.80mm
4.5mm 0.90 - 1.13mm 1.13 - 1.35mm 0.68 - 0.90mm 0.68 - 0.90mm 0.68 - 0.90mm
5.0mm 1.00 - 1.25mm - 0.75 - 1.00mm 0.75 - 1.00mm 0.75 - 1.00mm
5.5mm 1.10 - 1.38mm - 0.83 - 1.10mm 0.83 - 1.10mm 0.83 - 1.10mm
6.0mm 1.20 - 1.50mm - 0.90 - 1.20mm 0.90 - 1.20mm 0.90 - 1.20mm
Punch Press
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Burring Hole
ReferenceThe table below shows the pre-pierce and burred hole sizes for Mild Steel.
Countersink Hole ReferenceThe table below shows the nominal pre-pierce hole sizes required for a countersink operation
for Mild Steel.
Screw Size
Material M2 M2.5 M2.6 M3 M4 M5 M6
Thickness x 0.4 x 0.45 x 0.45 x 0.5 x 0.7 x 0.8 x 1.0
1.0 3.5 4.5 4.8 5.7 - - -
1.2 3.5 4.5 4.5 5.3 7.3 - -
1.5 3.2 4.2 4.5 5.3 7.3 9.0 -
1.6 3.0 4.0 4.3 5.0 7.0 8.8 10.8
2.0 3.0 3.8 4.0 4.8 7.0 8.6 10.6
2.3 3.0 3.8 4.0 4.8 6.8 8.5 10.5
2.5 - - - 4.5 6.5 8.4 10.4
3.0 - - - 4.4 6.0 8.0 10.0
3.2 - - - 4.0 5.8 7.8 9.8
ø A
ø B
t
Pre-Pierced Hole (øA) Nominal
Burr Hole
(øB)
0.8mm 1.0mm 1.2mm 1.6mm 2.0mm 2.3mm
M2.6 x 0.45 1.2 1.2 1.4 1.6 - - 2.21
M3 x 0.5 1.2 1.5 1.5 1.7 - - 2.57
M4 x 0.7 - 2.0 2.0 2.1 2.3 2.7 3.40
M5 x 0.8 - 2.0 2.0 2.6 3.0 3.1 4.30
M6 x 1.0 - 2.0 2.0 3.4 3.8 3.8 5.10
MaterialThickness
Tap Size
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