Vibrating Screen Troubleshooting: Common Problems, Causes and Solutions

Common Vibrating Screen Problems and Troubleshooting Solutions

1. Bearing Overheating

• High temperature on bearing housing

• Abnormal heat emission

• Bearing noise or jamming

• Insufficient or deteriorated lubricating grease

• Excessive lubrication filling

• Bearing wear or damage

• Misalignment of vibration motor

• Loose or damaged bearing seat

• Replenish or replace high-temperature resistant lubricating grease

• Adjust lubrication amount to a reasonable level

• Replace worn bearings in time

• Check and correct motor installation alignment

• Fasten or repair the bearing seat

2. Abnormal Noise and Vibration

• Loud knocking or friction noise

• Unstable or uneven vibration

• Strong shaking of the whole machine

• Loose bolts on the screen body or motor base

• Cracked side plate or damaged beam

• Worn or broken rubber shock absorber

• Unbalanced vibration motor

• Loose or damaged screen frame

• Tighten all connecting bolts

• Repair or replace cracked components

• Replace worn shock absorbers

• Adjust motor balance or replace eccentric block

• Reinforce or repair the screen frame

3. Low Screening Efficiency

• Too much fine material left in oversize product

• Low output of qualified material

• Incomplete material classification

• Incorrect vibration amplitude or frequency

• Uneven feeding or excessive feeding amount

• Blocked screen mesh

• Worn or damaged screen surface

• Improper installation angle of the screen

• Adjust motor eccentric block to change amplitude

• Control feeding speed and keep uniform feeding

• Clean blocked screen mesh regularly

• Replace worn screen mesh

• Adjust the installation angle of the screen machine

4. Screen Mesh Blockage

• Material accumulation on the screen surface

• Reduced or no material passing through the mesh

• Uneven material distribution

• High moisture content in materials

• Sticky or muddy materials

• Inappropriate screen mesh size

• Insufficient vibration force

• Dry materials before feeding if possible

• Use anti-blocking screen mesh or bouncing ball devices

• Adjust vibration amplitude to improve penetration

• Clean the screen surface during operation

5. Abnormal Motor Operation

• Motor does not start

• Motor overheats quickly

• Weak or uneven vibration

• Power supply failure

• Damaged motor coil or bearing

• Incorrect wiring connection

• Overload operation

• Check power supply and voltage

• Repair or replace the faulty motor

• Reconnect wiring according to the instruction

• Reduce feeding amount to avoid overload

6. Fast Screen Mesh Wear

• Screen mesh breaks or deforms quickly

• Uneven wear on screen surface

• Excessive impact from large materials

• Sharp or highly abrasive materials

• Incorrect installation of screen mesh

• Insufficient tension of screen mesh

• Install a buffer feeder to reduce material impact

• Choose high-wear-resistance screen mesh

• Reinstall and tension the screen mesh properly

• Avoid overloading the screen

7. Material Movement Abnormality

• Material runs to one side

• Material stays on the screen too long

• Material is thrown out too fast

• Unbalanced vibration force

• Inclination angle of screen is incorrect

• Loose or damaged support springs

• Adjust vibration motor parameters

• Correct the installation angle

• Replace damaged support springs

Preventive Maintenance to Reduce Vibrating Screen Troubleshooting

• Lubricate bearings regularly with recommended grease

• Check and tighten all bolts before each shift

• Clean screen mesh and remove accumulated materials daily

• Inspect shock absorbers, springs and motors weekly

• Replace worn parts before complete failure

• Keep feeding uniform and within designed capacity

Conclusion