Hammer crushers are widely used in mining, construction, and coal industries. However, during long-term operation, some issues may occur. Knowing common problems and solutions can help extend the machine’s life and improve efficiency.
1. Reduced Output
Cause: High moisture in material, uneven feeding, or worn hammers.
Solution:
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Adjust feeding speed for uniform input
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Regularly replace or repair worn hammers
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Control material moisture, avoid excessive wetness
2. Hammer Breakage
Cause: Hard objects in the material or improper hammer material.
Solution:
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Inspect and remove hard objects from material
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Use wear-resistant alloy hammers
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Adjust crusher speed to reduce impact
3. Excessive Vibration
Cause: Rotor imbalance, damaged bearings, or loose fasteners.
Solution:
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Check and correct rotor balance
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Lubricate and replace bearings regularly
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Tighten loose bolts
4. Uneven Discharge Size
Cause: Uneven hammer wear or improper grate spacing.
Solution:
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Inspect and replace worn hammers
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Adjust grate spacing for consistent discharge
5. Motor Overheating
Cause: Overloading, poor lubrication, or belt slippage.
Solution:
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Avoid overloading, control operational load
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Regularly check lubrication system
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Adjust belt tension or replace worn belts
6. Abnormal Noise
Cause: Bearing damage, rotor collision with the body, or foreign objects in the chamber.
Solution:
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Inspect and replace damaged bearings
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Remove foreign objects from the chamber
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Check rotor alignment to prevent collision
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