Tolerances: We follow Indian Standard is: 11166:1993 class-2 or ISO: 2768 M for unspecified dimensions.
Unspecified Tolerances- is 11166:1993 class 2
| Nominal Size (mm) | Tolerance (mm) | ||||||||
Over |
Up to |
||||||||
|
6 |
±0.10 |
±0.12 |
±0.15 |
±0.20 |
±0.25 |
±0.25 |
±0.30 |
±0.35 |
6 |
10 |
- |
±0.12 |
±0.15 |
±0.25 |
±0.25 |
±0.30 |
±0.35 |
±0.45 |
10 |
18 |
- |
- |
±0.20 |
±0.30 |
±0.35 |
±0.35 |
±0.40 |
±0.55 |
18 |
30 |
- |
- |
- |
±0.30 |
±0.40 |
±0.45 |
±0.50 |
±0.65 |
30 |
80 |
- |
- |
- |
- |
±0.45 |
±0.55 |
±0.60 |
±0.75 |
80 |
180 |
- |
- |
- |
- |
- |
±0.60 |
±0.70 |
±0.90 |
180 |
300 |
- |
- |
- |
- |
- |
- |
±1.00 |
±1.15 |
300 |
500 |
- |
- |
- |
- |
- |
- |
- |
±2.00 |
Unspecified Tolerances – ISO 2768(In mm)
Nominal |
Tolerance (mm) | |||||||
Class |
||||||||
0.5-3 |
3-6 |
6-30 |
30-120 |
120-400 |
400-1000 |
1000-2000 |
2000-4000 |
|
F |
±0.05 |
±0.05 |
±0.10 |
±0.15 |
±0.20 |
±0.30 |
±0.50 |
- |
M |
±0.10 |
±0.10 |
±0.20 |
±0.30 |
±0.50 |
±0.80 |
±1.20 |
±2 |
C |
±0.15 |
±0.20 |
±0.50 |
±0.80 |
±1.20 |
±2 |
±3 |
±4 |
V |
- |
±0.50 |
±1 |
±1.5 |
±2.50 |
±4 |
±6 |
±8 |
Angular Tolerance: ±0.5°
Wall Thickness: 2.5 mm minimum for Ferrous Alloy
1 mm for Aluminium alloys.
Fillet Radius: 0.5 mm
Design Guide Lines:
Cast Holes |
||
| Hole Diameter (mm) | Maximum Length or Depth (mm) | |
| D | Through Hole | Blind Hole |
2-4 |
1.0*D |
0.6*D |
4-6 |
2.0*D |
1.0*D |
6-10 |
3.0*D |
1.6*D |
>10 |
4.0*D |
2.0*D |
Cast Slots |
||
| Width B (mm) |
Highest Depth | |
| Open | Closed | |
2-4 |
1*B |
1.0*B |
4-6 |
2*B |
1.0*B |
6-10 |
3*B |
1.6*B |
>10 |
4*B |
2.0*B |
