Algemene toleranties volgens ISO 2768-1

General tolerances for linear measures and level squares with four tolerance classes are useful for simplifying drawings. By choosing the tolerance class precision levels common in workshops should be taken into account. If smaller tolerances are needed or bigger ones are more economical, then these tolerances are indicated next to the nominal size.

Tabular 1 Limits for linear measures

class Limits in mm for nominal sizes in mm
0,5 to 3 above
3 to 6
above
6 to 30
above
30 to 120
above 120 to 400 above 400 to 1000 above 1000
to 2000
above 2000 to 4000

f (fine)
± 0,05 ± 0,05 ± 0,1 ± 0,15 ± 0,2 ± 0,3 ± 0,5

m (medium)
± 0,1 ± 0,1 ± 0,2 ± 0,3 ± 0,5 ± 0,8 ± 1,2 ± 2

c (coarse)
± 0,15 ± 0,2 ± 0,5 ± 0,8 ± 1,2 ± 2 ± 3 ± 4

v (very coarce grob)
± 0,5 ± 1 ± 1,5 ± 2,5 ± 4 ± 6 ± 8

For nominal sizes below 0,5 mm the limit measures are to be indicated directly at the nominal measure.

Tabular 2 Limit measures for radius of curvature and chamfer height

class Limits
in mm for nominal sizes in mm
0,5 to 3 above 3 to 6 above 6

f (fine)
± 0,2 ± 0,5 ± 1

m (medium)

c (coarse)
± 0,4 ± 1 ± 2

v (very coarse)

 

Tabular 3 Limits for angular dimensions


Tolerance
class
Limits
in mm for nominal sizes in mm
to 10 above 10 to 50 above 50 to 120 above 120 to 400 above 400

f (fine)
± 1 ° ± 30 ‘ ± 20 ‘ ± 10 ‘ ± 5 ‘
m (medium)

c (coarse )
± 1 ° 30 ‘ ± 1 ° ± 30 ‘ ± 15 ‘ ± 10 ‘

v (very coarce)
± 3 ° ± 2 ° ± 1 ° ± 30 ‘ ± 20 ‘

For nominal sizes below 0,5 mm the limit measures are to be indicated directly at the nominal measure. If general tolerances according to ISO 2768-1 are valid, the following has to be inserted in the title box, i.e. for tolerance class medium ISO 2768–m or general tolerance ISO 2768–m

For new designs only the general tolerance according to DIN ISO 2768-1 should be valid. The limit measurements of the tolerance classes m and f of DIN ISO 2768-1 are identic with those of DIN 7168-1.

Disclaimer: het gebruik van deze gegevens is voor eigen risico van de gebruiker.