:: Standard norms ::

According to ISO 525, rang of nominal out side diameter areas follow:

         Range of nominal out side diameters
                For diameter 350 mm and above the table includes two ranges of dimensions. One
           shows metric dimensions rounded off from inch dimensions; the other round metric
           dimensions.

Dimensions in millimeters

6
8
10
13
16
20
25

32
40
50
63
80
100
115

125
150
180
200
230
250
300

350/356
400/406
450/457
500/508
600/610
750/762
800/813

900/914
1000/1015
1060/1067
1220
1250
1500
1800

For the tolerances according to ISO 286 for different application are as
follow:

Tolerances

            Hole tolerances, H
            The tolerances given below, chosen from ISO 286, should be checked with cylindrical
          plug gauges as defined in ISO/R 1938.
          This plug gauges shall be rejected when they reach the nominal size of the hole through
          wear.

          Precision wheels
        - H > 30 mm: tolerance H11
        - H < 30 mm: tolerance +0.16mm

          Snagging and cutting-off wheels
        - H > 18 mm: tolerance H12
        - H < 18 mm: tolerance +0.21mm

High-pressure snagging
- all H: tolerance C11

Other dimensional tolerance
- Other dimensional tolerances are given in ISO 603

Balance tolerance
- Balance tolerance are given in ISO 603

Another useful standards are:

ISO 603-1-8; 10 ; 12 ; 14

ISO 8486-1; ISO 8486-2

ISO 9136; ISO 9136-2

ISO 13942

DIN ISO 666

DIN EN ISO 6103