ALFRA APS 70 Manual De Instrucciones página 25

Operating Range of the APS punching unit for round holes with S233
Conversion factor of S233 for the processing of various materials.
R max [N/mm²] (sheet)
max = 0,85  R
max [N/mm²]
Factor (Steel X / S233)
Example 1
APS 70 punching unit, F
Punch diameter Ø = 18 mm
Material thickness S = 8 mm
Material C 45, R
Calculation 1:
x
F = F (S233)
F = 170 kN
F is smaller than F
Punching power sufficient!
Conversion table for the pressure units bar and psi.
bar psi psi
1 14.5 1
10 145 100
100 1450 1000
500 7250 5000
1000 14500 10000
1200 17400 10500
S233
470
376
1.00
= 310 kN
max
²
= 800 N/mm
max
Factor (C 45 / S233)
x
1,70 = 289 kN
max
bar
0.0689
6.8965
68.965
344.82
689.65
724.13
S275 S355
510 630
408 504
1.09 1.34
APS 70 punching unit, F
Punch diameter Ø = 21 mm
Material thickness S = 12 mm
Material S275, R
F = F (S233)
F = 298 kN
F is larger than F
Punching power too low!
Please opt for our APS 120
E335 C25 C35
710 600 700
568 480 560
1.51 1.28 1.49
Example 2
= 310 kN
max
= 510 N/mm
max
Calculation 2:
 x
Factor (S275 / S233)
 x
1,09 = 324,8 kN
max
C45 C60
800 900
640 720
1.70 1.91
²
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