Vibration and abnormal noise in double roller press granulators are mostly caused by problems such as improper installation, wear and tear of parts, improper materials, and improper operation.

First, the installation and fixing are not up to standard. The anchor bolts of the fertilizer production machine are loose, the shock-absorbing pads are old and damaged, the machine body is not placed horizontally, the two rollers are offset under the force during operation, and a violent vibration and resonance noise is generated during operation.

Second, wear and damage to the roller skin and core components: Uneven wear of the roller skin, uneven surfaces, or loose, misaligned, or broken roller skins can lead to unbalanced force during material extrusion; worn bearings, excessive clearance, and lack of lubrication can cause abnormal bearing stress, resulting in friction noise and machine vibration.

Third, transmission system malfunctions: Worn gears in the gearbox, poor gear meshing, inconsistent chain and belt tension, large misalignment of the coupling, and power transmission jamming can cause periodic abnormal noise and vibration during operation.

Fourth, material and operational issues: uneven moisture content of raw materials, or the presence of hard impurities such as stones, can cause hard impacts when entering the gap between the rollers; excessive feed rate or uneven material distribution can lead to excessive load on one side, causing an imbalance in the compression load between the two rollers and resulting in vibration and abnormal noise.

Fifth, internal material accumulation and blockage: residual lumps of material inside the machine can clog the rollers, hindering normal rotation, increasing operating resistance, and exacerbating equipment vibration and accelerating component damage due to prolonged overload operation.