Datasheet
Pad diameter (mm)
ø8
0.50
ø
10 ø13 ø16 ø20 ø25 ø32 ø40 ø50
Pad area S (cm
2
) 0.79 1.33
ø
2
0.03
ø
4 ø6
0.13 0.28 2.01 3.14 4.91 8.04 12.6 19.6
Vacuum
pressure
(kPa)
(N)
– 85
–
80
–
75
–
70
–
65
–
60
–
55
–
50
–
45
–
40
0.27
0.25
0.24
0.22
0.20
0.19
0.17
0.16
0.14
0.13
1.07
1.00
0.94
0.88
0.82
0.75
0.69
0.63
0.57
0.50
2.40
2.26
2.12
1.98
1.84
1.70
1.55
1.41
1.27
1.13
4.27
4.02
3.77
3.52
3.27
3.01
2.76
2.51
2.26
2.01
6.67
6.28
5.89
5.50
5.10
4.71
4.32
3.93
3.53
3.14
11.3
10.6
10.0
9.3
8.6
8.0
7.3
6.7
6.0
5.3
17.1
16.1
15.1
14.1
13.1
12.1
11.1
10.0
9.0
8.0
26.7
25.1
23.6
22.0
20.4
18.8
17.3
15.7
14.1
12.6
41.7
39.3
36.8
34.3
31.9
29.4
27.0
24.5
22.1
19.6
68.3
64.3
60.3
56.3
52.2
48.2
44.2
40.2
36.2
32.2
107
101
95
88
82
76
69
63
57
50
167
157
147
137
127
118
108
98
88
78
Pad diameter (mm)
ø125
122.7
ø150 ø250 ø300 ø340
Pad area S (cm
2
) 176.6
ø
63
31.2
ø
80 ø100
50.2 78.5 490.6 706.5 907.5
Vacuum
pressure
(kPa)
– 85
–
80
–
75
–
70
–
65
–
60
–
55
–
50
–
45
–
40
265
250
234
218
203
187
172
156
140
125
427
402
377
351
326
301
276
251
226
201
667
628
589
550
510
471
432
393
353
314
1043
982
920
859
798
736
675
614
552
491
1501
1413
1325
1236
1148
1060
971
883
795
706
4170
3925
3680
3434
3189
2944
2698
2453
2208
1962
6005
5652
5299
4946
4592
4239
3886
3533
3179
2826
7714
7260
6806
6353
5899
5445
4991
4538
4084
3630
Pad size (mm)
0.44Pad area S (cm
2
) 0.52 0.76
2 x 4
0.07
3.5 x 7 4 x 10 5 x 10 6 x 10 4 x 20 5 x 20 6 x 20 8 x 20 4 x 30 5 x 30 6 x 30 8 x 30
0.21 0.36 0.94 1.12 1.46 1.16
Vacuum
pressure
(kPa)
– 85
–
80
–
75
–
70
–
65
–
60
–
55
–
50
–
45
–
40
0.60
0.56
0.53
0.49
0.46
0.42
0.39
0.35
0.32
0.28
1.79
1.68
1.58
1.47
1.37
1.26
1.16
1.05
0.95
0.84
3.06
2.88
2.70
2.52
2.34
2.16
1.98
1.80
1.62
1.44
3.74
3.52
3.30
3.08
2.86
2.64
2.42
2.20
1.98
1.76
4.42
4.16
3.90
3.64
3.38
3.12
2.86
2.60
2.34
2.08
6.46
6.08
5.70
5.32
4.94
4.56
4.18
3.80
3.42
3.04
7.99
7.52
7.05
6.58
6.11
5.64
5.17
4.70
4.23
3.76
9.52
8.96
8.40
7.84
7.28
6.72
6.16
5.60
5.04
4.48
12.41
11.68
10.95
10.22
9.49
8.76
8.03
7.30
6.57
5.84
9.86
9.28
8.70
8.12
7.54
6.96
6.38
5.80
5.22
4.64
1.44
12.24
11.52
10.80
10.08
9.36
8.64
7.92
7.20
6.48
5.76
1.72
14.62
13.76
12.90
12.04
11.18
10.32
9.46
8.60
7.74
6.88
2.26
19.21
18.08
16.95
15.82
14.69
13.56
12.43
11.30
10.17
9.04
(N)
(N)
(1) Theoretical Lifting Force (Theoretical lifting force = P x S x 0.1)
Pad Diameter (ø2 to ø50)
Pad Diameter (ø63 to ø340)
Oval Pad (2 x 4 to 8 x 30)
The theoretical lifting force of a pad can be found by calculation or from the theoretical lifting force table.
Calculation
: Lifting force (N)
: Vacuum pressure (kPa)
: Pad area (cm
2
)
: Safety factor Horizontal lifting: 4 or more
Vertical lifting: 8 or more
W = P x S x 0.1 x –
1
t
W
P
S
t
The theoretical lifting force (not including the safety factor) is found from the pad diameter and vacuum pressure.
The required lifting force is then found by dividing the theoretical lifting force by the safety factor t.
Lifting force = Theoretical lifting force t
Theoretical Lifting Force
Horizontal lifting Vertical lifting
This type of application should
basically be avoided.
Pad
Model Selection
Lifting Force and Vacuum Pad Diameter
1. Theoretical Lifting Force
• Set the vacuum pressure below the pressure that has been stabilized after adsorption.
• However, when a workpiece is permeable or has a rough surface, note that the vacuum pressure drops since the workpiece
takes air in. In such a case, carry out an adsorption test for confirmation.
• The vacuum pressure when using an ejector is approximately –60 kPa as a guide.
Front matter 13