Iso 2768 Mk
EXAMPLE IS0 2768-mk of In this case the general for angular dimensions in ac- cordance with IS0 2768-l do not apply to right angles (900), which are implied but not indicated, because this part of IS0 2768 specifies general tolerances on perpendicularity. 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'. Permissible deviations in mm for ranges in nominal lengths 0.5 up to 3 over 3 up to 6 over 6 up to 30 over 30 up to 120 over 120 up to 400.
Iso 2768 Mk Internal Radius
Iso 2768-mk Table
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 |