ALFRA APS 70 - Operating Range and Conversion Tables

25
Operating Range of the APS punching unit for round holes with S233
Conversion factor of S233 for the processing of various materials.
Example 1
Example 2
APS 70 punching unit, Fmax = 310 kN
Punch diameter Ø = 18 mm
Material thickness S = 8 mm
Material C 45, R max = 800 N/mm²
APS 70 punching unit, Fmax = 310 kN
Punch diameter Ø = 21 mm
Material thickness S = 12 mm
Material S275, R max = 510 N/mm²
Calculation 1:
F = F (S233) x Factor (C 45 / S233)
F = 170 kN x 1,70 = 289 kN
F is smaller than Fmax
Calculation 2:
F = F (S233)  x Factor (S275 / S233)
F = 298 kN  x 1,09 = 324,8 kN
F is larger than Fmax
Punching power sufficient!
Punching power too low!
Please opt for our APS 120
Conversion table for the pressure units bar and psi.
bar
psi
psi
bar
1
14.5
1
0.0689
10
145
100
6.8965
100
1450
1000
68.965
500
7250
5000
344.82
1000
14500
10000
689.65
1200
17400
10500
724.13
S233
S275
S355
E335
C25
C35
C45
C60
470
510
630
710
600
700
800
900
376
408
504
568
480
560
640
720
1.00
1.09
1.34
1.51
1.28
1.49
1.70
1.91
R max [N/mm²] (sheet)
max = 0,85  R max [N/mm²]
Factor (Steel X / S233)