Common Jaw Crusher Failures in Production
Jaw crushers are widely used for primary crushing in mining, construction, and aggregate production. However, during long-term operation, certain failures are inevitable. Knowing these issues and addressing them promptly can extend service life and improve efficiency. Below is a summary of common problems:
1. Difficult Start-up
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Cause: Insufficient motor power, electrical faults, or flywheel blockage.
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Solution: Check the power supply, inspect wiring, and clear materials inside the crushing chamber.
2. Bearing Overheating
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Cause: Poor lubrication, excessive grease, or worn bearings.
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Solution: Apply proper lubrication regularly and replace damaged bearings if necessary.
3. Abnormal Discharge Size
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Cause: Worn jaw plates or improper discharge opening adjustment.
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Solution: Replace worn plates and reset the discharge setting.
4. Loose or Broken Jaw Plates
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Cause: Loose bolts or feeding overly hard materials.
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Solution: Tighten bolts and prevent uncrushable materials from entering.
5. Excessive Vibration
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Cause: Unstable foundation, worn parts, or eccentric shaft issues.
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Solution: Check the installation base, replace worn parts, and adjust the shaft.
6. Abnormal Noise
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Cause: Loose components, poor lubrication, or metal collision.
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Solution: Inspect and tighten connections, add lubricant as required.
Conclusion
Most jaw crusher failures are related to lubrication, wear, installation, and operation. Regular maintenance and timely inspection are essential to ensure stable performance and maximize productivity.
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