Iso 2768 M Tolerance Chart

Posted : admin On 12/24/2021

General Tolerances to DIN ISO 2768. The latest DIN standard sheet version applies to all parts made to DIN standards. Variations on dimensions without tolerance values are according to 'DIN ISO 2768- mk'. GENERAL TOLERANCES FOR LINEAR AND ANGULAR DIMENSIONS (DIN ISO 2768 T1) LINEAR DIMENSIONS. General tolerances for linear dimensions are given in tables 1 and 2. IS 2102 ( Part 1): 1993: 1969 IS0 2766-l 4.2 Angular General a) “IS0 2768”; only the b) the tolerance but not IS0 2768. Dimensions tolerances specified general orientation in angular units control of lines or line elements of surfaces, class in accordance with this.

Table 1. Permissible deviations for linear dimensions except chamfered parts (external radii and chamfer heights, see Table 2.) Unit : mm Tolerance class
Designation
Division of basic dimension 0.5 (1)
Over 3
Over 6
Over
Over
Over
Over
Over
up to 3
up to 6
up to
30 up
120 up
400 up
1000
2000
30
to 120
to 400
to
up to
up to
1000
2000
4000
Description
Permissible deviations 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
0.2
0.3
0.5
0.8
1.2
2
3
4
v
very coarse
-
0.5
1
1.5
2.5
4
6
8
Note (1) :
For basic dimensions below 0.5 mm, the deviations shall be indicated adjacent to the relevant basic dimension(s).
Table 2. Permissible deviations for linear dimensions of chamfered parts (Rounding of corner and chamfered dimension) Unit : mm Tolerance class
Division of basic dimension
Designation
Description
0.5 (1)
Over 3
up to 3
up to 6
Over 6
Permissible deviations
Note (1) :
f
fine
m
medium
c
coarse
v
very coarse
0.2
0.5
1
0.4
1
2
For basic dimensions below 0.5 mm, the deviations shall be indicated adjacent to the relevant basic dimension(s).
Table 3. Permissible deviations for angular deviations
Tolerance class
Deviation of length (unit : mm) of the shorter side of the angle concerned Up to 10
Designation
Description
Over 10
Over 50
Over 120
up to 50
up to 120
up to 400
Over 400
Permissible deviations f
fine
m
medium
c v

30c
20c
10c
5c
coarse
1°30c

30c
15c
10c
very coarse



30c
20c
Table 4. General tolerances on straightness and flatness Unit : mm Straightness and flatness tolerances for ranges of nominal lengths Tolerance
Up to 10
class
Over 10
Over 30
Over 100
Over 300
Over 1000
up to 30
up to 100
up to 300
up to 1000
up to 3000
General tolerances on straightness and flatness H
0.02
0.05
0.1
0.2
0.3
0.4
K
0.05
0.1
0.2
0.4
0.6
0.8
L
0.1
0.2
0.4
0.8
1.2
1.6
Table 5. General tolerances on perpendicularity Unit : mm Perpendicularity tolerances for ranges of nominal lengths of the shorter side Tolerance class
Up to 100
Over 100
Over 300
Over 1000
up to 300
up to 1000
up to 3000
General tolerances on perpendicularity H
0.2
0.3
0.4
0.5
K
0.4
0.6
0.8
1
L
0.6
1
1.5
2
Table 6. General tolerances on symmetry Unit : mm Symmetry tolerances for ranges of nominal length Tolerance
Up to 100
class
Over 100
Over 300
Over 1000
up to 300
up to 1000
up to 3000
General tolerances on symmetry H
0.5
K L
0.6 0.6
1
0.8
1
1.5
2
Table 7. General tolerances on circular run-out Unit : mm Tolerance class
Circular run-out tolerance
H
0.1
K
0.2
L
0.5

DIN ISO 2768 1 / 3 Maryland Metrics Technical Data Chart: General Tolerances to DIN ISO 2768 T1 and T2 The latest DIN standard sheet version applies to all parts made to DIN standards. Variations on dimensions without tolerance values are according to 'DIN ISO 2768-mk'. GENERAL TOLERANCES FOR LINEAR AND ANGULAR DIMENSIONS (DIN ISO 2768 T1). This part of ISO 2768 is intended to simplify drawing indications and specifies general geometrical tolerances to control those features on the drawing which have no respective individual indication. It specifies general geometrical tolerances in three tolerance classes.

According to DIN ISO 2768-1

According to DIN ISO 2768-2

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

Tolerance-

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

Tolerance

class

Limits in mm for nominal sizes in mm

0,5

to 3

above 3

to 6

above 6

f (finne)

± 0,2

± 0,5

± 1

m (medium)
c (coarse)

± 0,4

± 1

± 2

v (very coarse)

Bei Nennmassen unter 0,5 mm sind die Grenzabmasse direkt am Nennmass anzugeben.

Tabelle 3 Grenzabmasse für Winkelmasse

Tolerance class

Limits in mm for nominal sizes in mm

to 10

above 10

to 50

above 50

to 120

above 50

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.

According to DIN ISO 2768-2

DIN ISO 2768-2 is for simplifying drawing and fixes general tolerances in three tolerance classes for form and position.
By choosing a special tolerance class exactly the precision level common in workshops should be taken into account.

Iso 2768 M Pdf

Tolerance

Iso 2768 M Tolerance Chart

If smaller tolerances are needed or bigger are more economical these tolerances should be mentioned directly according to ISO 1101.

General tolerances for form and position should be used while the tolerance principle according. to ISO 8015 is valid and while this is mentioned in the drawing.
This tolerance principles says that no opposite relation between measure, form and position tolerance exists (principle of superposition).

Tolerance

class

General tolerances for straightness and evenness in mm

Range of specified size in mm

to 10

above 10

to 30

above 30

to 100

above 100

to 300

above 300

to 1000

above 1000

to 3000

H

0,02

0,05

0,1

0,2

0,3

0,4

K

0,05

0,1

0,2

0,4

0,6

0,8

L

0,1

0,2

0,4

0,8

1,2

1,6

Tolerance

class

General tolerances for straightness and evenness in mm

Range of specified size in mm

to 100

above 100

to 300

above 300

to 1000

above 1000

to 3000

H

0,2

0,3

0,4

0,5

K

0,4

0,6

0,8

1

L

0,6

1

1,5

2

Tolerance

class

General tolerances for symmetry

Range of specified size in mm

to 100

above 100

to 300

above 300

to 1000

above 1000

to 3000

H

0,5

K

0,6

0,8

1

L

0,6

1

1,5

2


General tolerances for form and position are valid for form elements for which form and position tolerances are not indicated individually.
They are applicable for all characteristics of the form elements accept cylinders, profiles of any line or surfaces, inclines, coaxiality, position and total movement.

Iso 2768 M Tolerance Chart Pdf

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Iso 2768 Mk Spec

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