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General Tolerances to DIN ISO 2768
Aug 09,2019 | Views: 142

General Tolerances @ E-Mold (apply unless specified otherwise)

CNC (Metals): DIN ISO 2768 fine, 

CNC (Plastics): DIN ISO 2768 medium

 

GENERAL TOLERANCES FOR LINEAR AND ANGULAR DIMENSIONS (DIN ISO 2768 T1) 

LINEAR DIMENSIONS:

Permissible deviations in mm for ranges in nominal lengths

Fine 

Tolerance class designation (description)  Very coarse 
Medium Coarse
0.5 up to 3 ±0.05 ±0.1 ±0.2 -
over 3 up to 6 ±0.05 ±0.1 ±0.3 ±0.5
over 6 up to 30 ±0.1 ±0.2 ±0.5 ±1.0
over 30 up to 120 ±0.15 ±0.3 ±0.8 ±1.5
over 120 up to 400 ±0.2 ±0.5 ±1.2 ±2.5
over 400 up to 1000 ±0.3 ±0.8 ±2.0 ±4.0
over 1000 up to 2000 ±0.5 ±1.2 ±3.0 ±6.0
over 2000 up to 4000 - ±2.0 ±4.0 ±8.0

 

EXTERNAL RADII AND CHAMFER HEIGHTS

Permissible deviations in mm for ranges in nominal lengths

Fine 

Tolerance class designation (description)  Very coarse 
Medium Coarse
0.5 up to 3 ±0.2 ±0.2 ±0.4 ±0.4
over 3 up to 6 ±0.5 ±0.5 ±1.0 ±1.0
over 6  ±1.0 ±1.0 ±2.0 ±2.0

 

ANGULAR DIMENSIONS

Permissible deviations in mm for ranges in nominal lengths

Fine 

Tolerance class designation (description)  Very coarse 
Medium Coarse
up to 10 ±1º ±1º ±0º30' ±3º
over 10 up to 50 ±0º30' ±0º30' ±1º ±2º
over 50 up to 120 ±0º20' ±0º20' ±0º30' ±1º
over 120 up to 400 ±0º10' ±0º10' ±0º15' ±0º30'
over 400 ±0º5' ±0º5' ±0º10' ±0º20'

 

GENERAL TOLERANCES FOR FORM AND POSITION (DIN ISO 2768 T2)
STRAIGHTNESS AND FLATNESS

Ranges in nominal                  lengths in mm Tolerance class
H K L
up to 10 0.02 0.05 0.1
over 10 up to 30 0.05 0.1 0.2
over 30 up to 100 0.1 0.2 0.4
over 100 up to 300 0.2 0.4 0.8
over 300 up to 1000 0.3 0.6 1.2
over 1000 up to 3000 0.4 0.8 1.6

 

PERPENDICULARITY

Ranges in nominal                  lengths in mm Tolerance class
H K L
up to 100 0.2 0.4 0.6
over 100 up to 300 0.3 0.6 1
over 300 up to 1000 0.4 0.8 1.5
over 1000 up to 3000 0.5 0.8 2

 

SYMMETRY

Ranges in nominal                  lengths in mm Tolerance class
H K L
up to 100 0.5 0.6 0.6
over 100 up to 300 0.5 0.6 1
over 300 up to 1000 0.5 0.8 1.5
over 1000 up to 3000 0.5 1 2

 

RUN-OUT

Tolerance class
H K L
0.1 0.2 0.5



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Louisa Xiao

Email : louisa@e-moldrapid.com

Tel : (+86)1345 0999 345

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