Actual Dimensional, Tolerance, Weight & Surface Area
| Surface Area in Square mm | Weight Per Ball KGS | Roundness % | Dimensional Tolerance (mm) | Nominal Diameter (mm) |
|---|---|---|---|---|
| 1.220 | 0.033 | 6=> | 2+ , 2- | 20 |
| 1.964 | 0.064 | 6=> | 2+ , 2- | 25 |
| 2.828 | 0.111 | 5=> | 2+ , 2- | 30 |
| 3.750 | 0.177 | 5=> | 2+ , 2- | 35 |
| 5.028 | 0.264 | 5=> | 2+ , 2- | 40 |
| 7.857 | 0.515 | 4=> | 3+ , 1- | 50 |
| 11.314 | 0.890 | 4=> | 3+ , 1- | 60 |
| 13.278 | 1.132 | 4=> | 3+ , 1- | 65 |
| 15.399 | 1.413 | 4=> | 3+ , 1- | 70 |
| 17.678 | 1.738 | 4=> | 3+ , 1- | 75 |
| 20.113 | 2.110 | 4=> | 3+ , 1- | 80 |
| 25.456 | 3.004 | 4=> | 4+ , 2- | 90 |
| 31.428 | 4.121 | 4=> | 4+ , 2- | 100 |
| 41.563 | 5.267 | 4=> | 4+ , 2- | 115 |
| 45.256 | 7.121 | 4=> | 4+ , 2- | 120 |
| 49.106 | 8.048 | 4=> | 4+ , 2- | 125 |
Our Usual Chemical Composition Is 70CR2v According to the Following Analysis
| CR | S | P | MN | SI | C |
|---|---|---|---|---|---|
| 0.7 - 0.55 percentage | 0.03 percentage | 0.03 percentage | 0.9 - 0.75 perceentage | 0.3 - 0.2 percentage | 0.75 - 0.65 percentage |
HARDNESS OF FORGING & SKEW BALL FORMING (HRC)
| Core | Dia 20 - 150 (mm) Surface | Endurance Test Times (5m) | Impact Test AK.J/CM2 | Material | Brand |
|---|---|---|---|---|---|
| 48<= | 56<= | 10000<= | 12<= | 70CR2 | Dana - 1 |
| 50<= | 58<= | 10000<= | 13<= | 70CR2 | Dana - 2 |
| 50<= | 60<= | 12000<= | 15<= | 70CR2 | Dana - 3 |
