Reasons for crusher excessively vibrating

Reasons for crusher excessively vibrating

Jaw crusher is mainly used to crush kinds of mining stones primarily, and the largest compression resistance of the material is 320MPa. The jaw crusher is widely used in stone mining, metallurgy industry, building material, highway, railway, water conservancy and chemical industry.
The motor drives the belt wheel, and makes movable jaw up and down by eccentric shaft. When the movable jaw rises, the angle between the fixed jaw and movable jaw gets larger, and the materials can be crushed to reach the crushing target. When the movable jaw is down, the angle between the fixed jaw and movable jaw becomes smaller. The movable jaw plate leaves the fixed jaw plate under the function of drawbar and spring, and then the crushed materials are discharged from the lower outlet of the crushing cavity.
The possible reasons:
1. Weight change due to worn crusher parts.
2. Excessive head spin.
3. Gear and pinion tooth root interference.
4. Bent countershaft.
5. Crusher sheave badly out of balance.
The troubles shooting:
1. Excessively worn feed plate or feed distributor parts. Add weight onto feed distributor or replace worn plates.
2. Head and main shaft moving with eccentric due to sized inner eccentric bushing.
3. Improper gear mesh,gear bottoming on pinion.Raise eccentric assembly by shimming.
4. Replace countershaft.
5. Remove dirt build-up from spokes and rim of sheave.
 

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