Sieves of Electroformed Sheet
Unit: mm
Opening Size and Pitch of Sieves (Square Holes) |
Nominal Size |
Opening Size (W) |
Pitch (P) (ISO) |
Sheet Thickness (ISO) |
principal sizes (opening) |
supplementary sizes |
Standard Size |
Tolerance |
Recommended Value |
Tolerance |
Recommended Value (for reference) |
R40/3 series |
R20 series (for reference) |
(±) |
Maximum(for reference) |
Maximum |
Minimum |
500 |
500 |
500 |
500 |
6.5 |
18 |
620 |
710 |
530 |
50 |
|
|
450 |
|
|
|
560 |
645 |
475 |
50 |
|
425 |
|
425 |
5.5 |
15 |
530 |
610 |
450 |
45 |
|
|
400 |
|
|
|
490 |
555 |
425 |
45 |
355 |
355 |
355 |
355 |
4.6 |
13 |
450 |
510 |
380 |
30 |
|
|
315 |
|
|
|
395 |
480 |
335 |
30 |
|
300 |
|
300 |
3.9 |
11 |
380 |
440 |
320 |
30 |
|
|
280 |
|
|
|
355 |
420 |
300 |
30 |
250 |
250 |
250 |
250 |
3.3 |
9 |
320 |
385 |
270 |
30 |
|
|
224 |
|
|
|
275 |
340 |
250 |
30 |
|
212 |
|
212 |
2.8 |
8 |
270 |
320 |
240 |
25 |
|
|
200 |
|
|
|
260 |
305 |
225 |
25 |
180 |
180 |
180 |
180 |
2.3 |
6 |
240 |
270 |
200 |
25 |
|
|
160 |
|
|
|
210 |
255 |
180 |
20~25 |
|
150 |
|
150 |
2.0 |
5 |
200 |
230 |
170 |
20~25 |
|
|
140 |
|
|
|
190 |
230 |
160 |
20~25 |
125 |
125 |
125 |
125 |
2.0 |
5 |
170 |
205 |
140 |
20~25 |
|
|
112 |
|
|
|
155 |
205 |
135 |
15~25 |
|
106 |
|
106 |
2.0 |
5 |
150 |
205 |
130 |
15~25 |
|
|
100 |
|
|
|
140 |
170 |
120 |
15~25 |
90 |
90 |
90 |
90 |
2.0 |
5 |
130 |
170 |
110 |
15~25 |
|
|
80 |
|
|
|
115 |
170 |
100 |
15~25 |
|
75 |
|
75 |
2.0 |
5 |
110 |
140 |
95 |
12~25 |
|
|
71 |
|
|
|
105 |
140 |
90 |
12~25 |
63 |
63 |
63 |
63 |
2.0 |
5 |
95 |
140 |
90 |
12~25 |
|
|
56 |
|
|
|
90 |
140 |
75 |
12~25 |
|
53 |
|
53 |
2.0 |
5 |
85 |
100 |
70 |
12~25 |
|
|
50 |
|
|
|
80 |
100 |
70 |
12~25 |
45 |
45 |
45 |
45 |
2.0 |
4 |
75 |
100 |
65 |
12~25 |
|
|
40 |
|
|
|
70 |
90 |
60 |
12~25 |
|
38 |
|
38 |
2.0 |
4 |
65 |
85 |
55 |
12~25 |
|
|
36 |
|
|
|
65 |
85 |
55 |
12~25 |
32 |
|
|
32 |
2.0 |
4 |
60 |
85 |
50 |
10~25 |
25 |
|
|
25 |
2.0 |
4 |
50 |
65 |
45 |
10~25 |
20 |
|
|
20 |
2.0 |
4 |
45 |
65 |
40 |
10~25 |
16 |
|
|
16 |
2.0 |
4 |
40 |
65 |
35 |
10~25 |
10 |
|
|
10 |
2.0 |
4 |
30 |
50 |
25 |
10~25 |
5 |
|
|
5 |
2.0 |
4 |
25 |
40 |
20 |
8~25 |
Relation between Mesh and Opening |
Mesh (LPI) |
Hole (square only) (μm) |
Open Area Void Fraction (approx. %) |
Mesh (LPI) |
Hole (square only) (μm) |
Open Area Void Fraction (%) |
Mesh (LPI) |
Hole (square only) (μm) |
Open Area Void Fraction (approx. %) |
1000 |
5 |
3.9 |
200 |
63 |
24.6 |
80 |
212 |
44.6 |
750 |
5 |
2.2 |
65 |
26.2 |
213 |
45 |
10 |
8.7 |
75 |
34.9 |
227 |
51 |
670 |
10 |
7 |
85 |
44.8 |
250 |
62 |
15 |
15.6 |
150 |
85 |
25.3 |
60 |
255 |
36.3 |
16 |
17.8 |
90 |
28.3 |
271 |
41 |
500 |
10 |
3.9 |
97 |
33 |
300 |
50.3 |
15 |
8.7 |
106 |
39 |
302 |
51 |
16 |
9.9 |
125 |
54.7 |
355 |
70.4 |
20 |
15.5 |
125 |
107 |
27.8 |
50 |
322 |
40.2 |
25 |
24.2 |
125 |
38 |
355 |
48.8 |
400 |
30 |
22.3 |
150 |
54.6 |
384 |
57.1 |
32 |
25.4 |
120 |
116 |
30 |
45 |
425 |
56.8 |
38 |
35.8 |
125 |
34.8 |
455 |
65 |
333 |
38 |
24.8 |
127 |
35.9 |
30 |
500 |
34.8 |
41 |
28.9 |
110 |
139 |
36 |
600 |
50 |
45 |
34.8 |
150 |
42 |
25 |
600 |
35 |
250 |
45 |
19.6 |
151 |
42.7 |
710 |
48.8 |
49 |
23.2 |
100 |
165 |
42.2 |
20 |
850 |
44.8 |
53 |
27.2 |
180 |
50 |
14.5 |
1000 |
32.6 |
57 |
31.5 |
90 |
180 |
40.7 |
|
63 |
38.4 |
181 |
41.2 |
65 |
41 |
197 |
48.8 |
Meshes and openings not listed are also available.
Electroformed seives with holes from 1720 to 2 μm have been produced.