Why work sieve shaker machine rotation slows

First, the phenomenon:
Normal working hours sieve shaker rotating round vibrating Mobile crushing plant slows down, bearing heating
Second, the resulting vibration sieve machine rotation slows reasons:
1, bearing the lack of mineral oil shaker.
2, bearing blocked.
3, bearing oiling excessive or inappropriate added oil.
4, bearing damage or poor installation, round off the wheel eccentric, eccentric.
Third, banana screen can be taken to solve the following measures:
1, injected into the bearing lubricant.
2, cleaning bearings, replace the seals, labyrinth seals gridiron checking devices.
3, check the bearing lubricant.
4, replacement of bearings, installation eccentric block to adjust round wheel.
5, reducing the screening machine feed.
6, the tension vibrating screen mesh, drive belt tensioner.