Press brake bending tonnage and force calculator
You can use this calculator to calculate necessary tonnage for press brake to perform the bending of necessary part. It means that you can verify the max. tonnage according to the technical specification of press brake or check the max. obtained tonnage by the press brake bending tooling compare to the necessary force. All bending tools have limits of force to be used.
This calculator is used for standard air bending process.
Legend:
F (Force), kN - total necessary force to execute the bend
s (thickness), mm - thickness of material to bend
V (opening), mm - opening of the bending die
h (resting part), mm - minimum necessary length of rest of the sheet before the bend
L (width of the bend), mm - main width of the part to be bended
R (radius), mm - internal radius of bended shape
TS - material tensile strength
The main formula to calculate
the bending force: F = (1,42 x TS x S2 x L)/1000 x V
internal radius: R = (5 x V) / 32
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Please use point, not comma if the number not integer
Please be informed that the present calculation only for general purposes. The type of metal and other indication points could be different and the calculation can't be done in the precision way.
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Press brake force chart
Information chart for necessary tonnage for 1 meter bending width (L) for mild steel material:
V |
H min |
R |
0,5 |
0,8 |
1 |
1,2 |
1,5 |
1,8 |
2 |
2,5 |
3 |
3,5 |
4 |
4,5 |
5 |
6 |
7 |
8 |
9 |
10 |
12 |
15 |
18 |
20 |
6 |
5 |
1 |
2,5 |
6,5 |
10 |
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8 |
6 |
1,3 |
2 |
5 |
8 |
11 |
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10 |
7 |
1,7 |
1,5 |
4 |
6 |
9 |
13 |
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12 |
9 |
2 |
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3 |
5 |
7 |
11 |
16 |
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15 |
12 |
2,7 |
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4 |
6 |
9 |
13 |
16 |
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20 |
15 |
3,3 |
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4 |
7 |
10 |
13 |
19 |
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26 |
18 |
4,2 |
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5 |
7,5 |
10 |
14 |
21 |
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30 |
22 |
5 |
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6,5 |
8 |
12 |
19 |
24 |
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32 |
23 |
5,4 |
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7,5 |
11,6 |
17 |
23 |
30 |
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37 |
25 |
5,8 |
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10 |
14,5 |
20 |
26 |
33 |
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42 |
29 |
6,7 |
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13 |
17 |
23 |
29 |
35,5 |
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45 |
32 |
7,5 |
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16 |
21 |
27 |
33 |
48 |
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50 |
36 |
8,3 |
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19 |
24 |
30 |
43 |
58 |
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60 |
43 |
10 |
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20 |
25 |
36 |
49 |
64 |
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70 |
50 |
11,5 |
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21 |
31 |
42 |
55 |
69 |
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80 |
57 |
13,5 |
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27 |
37 |
48 |
60 |
75 |
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90 |
64 |
15 |
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32 |
42 |
54 |
66 |
95 |
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100 |
71 |
17 |
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38 |
48 |
60 |
86 |
134 |
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130 |
93 |
22 |
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37 |
46 |
66 |
103 |
149 |
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180 |
130 |
30 |
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33 |
48 |
75 |
107 |
133 |
200 |
145 |
33 |
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43 |
67 |
97 |
119 |
250 |
180 |
42 |
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54 |
77 |
95 |
Additional
Attention: All the brands, machines, manufacturers and trademarks are used only for the information, are not connected with PRECITOOLS and are property of their respected owners.
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