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DIN 875 Print E-mail

Tolerance of flatness and rectilinearity for squares in accordance with DIN 875 at 20° C

Degree Formule
00
± ( 2 + L / 250 ) µm
0
± ( 2 + L / 100 ) µm
1
± ( 4 + L / 50 ) µm
2
± ( 8 + L / 25) µm
L = L1 o L2

Tolerance of flatness and rectilinearity DIN 875
L1 / L2
Tolerance in µm for accuracy
mm
00
0
1
2
25
2
/
/
/
50
2
3
5
10
75
2
3
6
11
100
2
3
6
12
125
2,5
3
7
13
150
3
4
7
14
200
3
4
8
16
250
3
5
9
18
300
3
5
10
20
400
4
6
12
24
500
4
7
14
28
600
/
/
17
32
750
/
/
19
38
1000
/
/
24
48
1500
/
/
34
68
2000
/
/
44
88
For the squares with bevelled edges these values apply at an angular freedom of ± 15° to the plane of simmetry.


Tolerance of rectangularity in accordance with DIN 875 at 20° C

Degree Formule
00
± ( 2 + L1 / 100 ) µm
0
± ( 5 + L1 / 50 ) µm
1
± ( 10 + L1 / 20 ) µm
2
± ( 20 + L1 / 10 ) µm
L1 = longer side of the squares

Tolerance of rectangularity DIN 875
L1
Tolerance in µm for accuracy
mm
00
0
1
2
25
2
/
/
/
50
3
6
13
25
75
3
7
14
28
100
3
7
15
30
125
4
8
17
33
150
4
8
18
35
200
4
9
20
40
250
5
10
23
45
300
5
11
25
50
400
6
13
30
60
500
7
15
35
70
600
/
/
40
80
750
/
/
43
85
1000
/
/
60
120
1500
/
/
85
170
2000
/
/
110
220
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