- 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. General tolerances for form and position according to DIN ISO 2768-2.
- ISO 2768-2:1989. ICS 17 17.040 17.040.10. ISO 2768-2:1989 General tolerances — Part 2: Geometrical tolerances for features without individual.
- General Tolerances to DIN ISO 2768 Created Date: 4/26/2018 3:18:31 PM.
Normativa En-22768 ISO-2768 Pag. 1 di 4 Via Bersella, 5 - 42018 SAN MARTINO IN RIO (RE) Italy - P.Iva 6 www.omp-italy.com - Tel.+39 0522 698931 Tolleranze generali per dimensioni lineari e angolari-Le tolleranze di tutti i disegni OMP, ove non sia espressamente riportata la tolleranza, sono.
Iso 2768 Mk Pdf
Iso 2768 Mk Standard
Table 1 – Allowable deviations for linear dimensions (excluding damaged edges) | |||||||||
Value is expressed in mm | |||||||||
Tolerance level | Allowable deviation of nominal size | ||||||||
name | description | 0.51) ~ 3 | >3 ~ 6 | >6 ~ 30 | >30 ~ 120 | >120 ~ 400 | >400 ~ 1000 | >1000 ~ 2000 | >2000 ~ 4000 |
f | Precision level | ±0.05 | ±0.05 | ±0.1 | ±0.15 | ±0.2 | ±0.3 | ±0.5 | - |
m | Medium level | ±0.1 | ±0.1 | ±0.2 | ±0.3 | ±0.5 | ±0.8 | ±1.2 | ±2 |
c | Rough grade | ±0.2 | ±0.3 | ±0.5 | ±0.8 | ±1.2 | ±2 | ±3 | ±4 |
v | The coarsest level | - | ±0.5 | ±1 | ±1.5 | ±2.5 | ±4 | ±6 | ±8 |
1) For nominal dimensions below 0.5mm, the deviation shall be marked after the nominal size. | |||||||||
Table 2 – Permissible deviations from the linear dimensions of the damaged edge (rounding radius and chamfer height) | |||||||||
Value is expressed in mm | |||||||||
Tolerance level | Allowable deviation of nominal size | ||||||||
name | description | 0.5 1) ~ 3 | > 3 ~ 6 | > 6 | |||||
f | Precision level | ±0.2 | ±0.5 | ±1 | |||||
m | Medium level | ||||||||
c | Rough grade | ±0.4 | ±1 | ±2 | |||||
v | The coarsest level | ||||||||
1) For nominal dimensions below 0.5mm, the deviation shall be marked after the nominal size. | |||||||||
Table 3 - Allowable deviations for angular dimensions | |||||||||
Value is expressed in mm | |||||||||
Tolerance level | Angle deviation of the short side of the allowed angle according to the length (mm) | ||||||||
name | description | ≤10 | >10 ~ 50 | > 50 ~ 120 | >120 ~ 400 | > 400 | |||
f | Precision level | ±1 ̊ | ±0 ̊30 ́ | ±0 ̊20 ́ | ±0 ̊10 ́ | ±0 ̊5 ́ | |||
m | Medium level | ||||||||
c | Rough grade | ±1 ̊30 ́ | ±1 ̊ | ±0 ̊30 ́ | ±0 ̊15 ́ | ±0 ̊10 ́ | |||
v | The coarsest level | ±3 ̊ | ±2 ̊ | ±1 ̊ | ±0 ̊30 ́ | ±0 ̊20 ́ | |||
Table 1 – General tolerances for flatness and flatness | Table 4 – General tolerances for circumferential runout | ||||||||
Value is expressed in mm | Value is expressed in mm | ||||||||
Tolerance level | Flat tolerances for flatness and flatness of the nominal length range | Tolerance level | Circumferential runout tolerance | ||||||
≤10 | >10-30 | >30-100 | >100-300 | >300-1000 | >1000-3000 | H | 0.1 | ||
H | 0.02 | 0.06 | 0.1 | 0.2 | 0.3 | 0.4 | K | 0.2 | |
K | 0.05 | 0.1 | 0.2 | 0.4 | 0.6 | 0.8 | L | 0.5 | |
L | 0.1 | 0.2 | 0.4 | 0.8 | 1.2 | 1.6 | |||
Table 2 – General tolerances for straightness | Table 3 – Symmetry General Tolerance | ||||||||
Value is expressed in mm | Value is expressed in mm | ||||||||
Tolerance level | Straightness tolerance of the short length of the nominal length | Tolerance level | Straightness tolerance of the short length of the nominal length | ||||||
≤100 | >100-300 | >300-1000 | >1000-3000 | ≤100 | >100-300 | >300-1000 | >1000-3000 | ||
H | 0.2 | 0.3 | 0.4 | 0.5 | H | 0.5 | |||
K | 0.4 | 0.6 | 0.8 | 1 | K | 0.6 | 0.8 | 1 | |
L | 0.6 |