SNZ BEARING'S EXAMINATION ITEM AND TEST DEVICE
SNZ products are taking strict Quality Control procedure. Here below is the details:
No. | Examination item | Test device |
1 | Residual magnetization (≤0.4mT) | Q9921, CJZ-1A |
2 | Vibration(noise) | S0910-1 BVT-1 |
3 | Tolerance of dimension | D923 D922 |
| OD deviation and variation △ DS △Dmp VDp VDmp | D051 | |
| Inner ring width and variation △Bs VBs | G903~G905 | |
| Accuracy of rotation Kia inner ring radial | B002 | |
| Fitting chamfering dimension | Limit coupon | |
4 | SD Runout between inner ring reference plane and bore | B002 B023A |
| Kea outer ring radial runout | B002 B013 B014A | |
| SD Tilt variation between OD surface baseline and reference plane | B002 G923 | |
| Sia runout between inner ring plane and groove | W013 | |
| Sea runout between outer ring plane and groove | W023 | |
5 | Cr radial play | X092 |
6 | Heat treat quality | Durometer |
| Material and metallographic analysis | Microscope | |
7 | Apparent quality Rotating flexibility | Feeling |
| Shield or seal ring mark and lastness | Visual and feeling | |
| Package condition | Visual examination | |
8 | Bearing life tester | EC7-30NT |
