...
2025-08-15 08:21
1856
...
2025-08-15 08:21
1176
...
2025-08-15 08:10
2228
...
2025-08-15 08:09
1404
...
2025-08-15 07:59
253
...
2025-08-15 07:52
1490
...
2025-08-15 07:44
2082
...
2025-08-15 07:34
2057
...
2025-08-15 07:31
1444
...
2025-08-15 07:23
266
R
Sealing principle: Since there is an oil film controlled by the oil seal edge between the oil seal and the shaft, the oil film has fluid lubrication characteristics.