Quality Grade
ISO 3290 – STANDARD GRADES & TOLERANCES ( INDIAN. STANDARDS )
|
ISO- 3290
GRADE |
BASIC DIA
TOLERANCE
|
LOT VARIATION
|
ALLOWABLE GAUGE INTERVAL
|
SUB
GAUGE
|
SUB GAUGE INTERVAL
|
BALL-DIA
VARIATION
|
DEVIATION FROM
SPHERICAL FORM
|
SURFACE
ROUGHNESS
|
|
3 |
+ 5 |
0.13 |
0.500 |
0.2 |
0.1 |
0.08 |
0.080 |
0.012 |
|
5 |
+ 5 |
0.25 |
1.000 |
0.4 |
0.2 |
0.13 |
0.130 |
0.020 |
|
10 |
+ 9 |
0.50 |
1.000 |
0.4 |
0.2 |
0.25 |
0.250 |
0.025 |
|
16 |
+10 |
0.80 |
2.000 |
0.8 |
0.4 |
0.40 |
0.400 |
0.032 |
|
20 |
+10 |
1.00 |
2.000 |
0.8 |
0.4 |
0.50 |
0.500 |
0.040 |
|
28 |
+12 |
1.40 |
2.000 |
0.8 |
0.4 |
0.70 |
0.700 |
0.050 |
|
40 |
+16 |
2.00 |
4.000 |
1.6 |
0.8 |
1.00 |
1.000 |
0.080 |
|
100 |
+40 |
5.00 |
10.000 |
4.0 |
2.0 |
2.50 |
2.500 |
0.125 |
|
200 |
+60 |
10.00 |
15.000 |
6.0 |
3.0 |
5.00 |
5.000 |
0.200 |